# Extra autoconf macros for the Glasgow fptools # # To be a good autoconf citizen, names of local macros have prefixed with FP_ to # ensure we don't clash with any pre-supplied autoconf ones. AC_DEFUN([GHC_SELECT_FILE_EXTENSIONS], [ $2='' $3='.so' case $1 in *-unknown-cygwin32) AC_MSG_WARN([GHC does not support the Cygwin target at the moment]) AC_MSG_WARN([I'm assuming you wanted to build for i386-unknown-mingw32]) exit 1 ;; # examples: i386-unknown-mingw32, i686-w64-mingw32, x86_64-w64-mingw32 *-mingw32) windows=YES $2='.exe' $3='.dll' ;; # apple platform uses .dylib (macOS, iOS, ...) *-apple-*) $3='.dylib' ;; esac ]) # FPTOOLS_SET_PLATFORM_VARS # ---------------------------------- # Set the platform variables AC_DEFUN([FPTOOLS_SET_PLATFORM_VARS], [ # If no argument was given for a configuration variable, then discard # the guessed canonical system and use the configuration of the # bootstrapping ghc. If an argument was given, map it from gnu format # to ghc format. # # For why we do it this way, see: #3637, #1717, #2951 # # In bindists, we haven't called AC_CANONICAL_{BUILD,HOST,TARGET} # so this justs uses $bootstrap_target. if test "$build_alias" = "" then if test "$bootstrap_target" != "" then build=$bootstrap_target echo "Build platform inferred as: $build" else echo "Can't work out build platform" exit 1 fi BuildArch=`echo "$build" | sed 's/-.*//'` BuildVendor=`echo "$build" | sed -e 's/.*-\(.*\)-.*/\1/'` BuildOS=`echo "$build" | sed 's/.*-//'` else GHC_CONVERT_CPU([$build_cpu], [BuildArch]) GHC_CONVERT_VENDOR([$build_vendor], [BuildVendor]) GHC_CONVERT_OS([$build_os], [$BuildArch], [BuildOS]) fi if test "$host_alias" = "" then if test "$bootstrap_target" != "" then host=$bootstrap_target echo "Host platform inferred as: $host" else echo "Can't work out host platform" exit 1 fi HostArch=`echo "$host" | sed 's/-.*//'` HostVendor=`echo "$host" | sed -e 's/.*-\(.*\)-.*/\1/'` HostOS=`echo "$host" | sed 's/.*-//'` else GHC_CONVERT_CPU([$host_cpu], [HostArch]) GHC_CONVERT_VENDOR([$host_vendor], [HostVendor]) GHC_CONVERT_OS([$host_os], [$HostArch], [HostOS]) fi if test "$target_alias" = "" then if test "$host_alias" != "" then GHC_CONVERT_CPU([$host_cpu], [TargetArch]) GHC_CONVERT_VENDOR([$host_vendor], [TargetVendor]) GHC_CONVERT_OS([$host_os], [$TargetArch],[TargetOS]) else if test "$bootstrap_target" != "" then target=$bootstrap_target echo "Target platform inferred as: $target" else echo "Can't work out target platform" exit 1 fi TargetArch=`echo "$target" | sed 's/-.*//'` TargetVendor=`echo "$target" | sed -e 's/.*-\(.*\)-.*/\1/'` TargetOS=`echo "$target" | sed 's/.*-//'` fi else GHC_CONVERT_CPU([$target_cpu], [TargetArch]) GHC_CONVERT_VENDOR([$target_vendor], [TargetVendor]) GHC_CONVERT_OS([$target_os], [$TargetArch], [TargetOS]) fi GHC_LLVM_TARGET([$target_cpu],[$target_vendor],[$target_os],[LlvmTarget]) GHC_SELECT_FILE_EXTENSIONS([$host], [exeext_host], [soext_host]) GHC_SELECT_FILE_EXTENSIONS([$target], [exeext_target], [soext_target]) windows=NO case $host in *-unknown-mingw32) windows=YES ;; esac BuildPlatform="$BuildArch-$BuildVendor-$BuildOS" BuildPlatform_CPP=`echo "$BuildPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'` BuildArch_CPP=` echo "$BuildArch" | sed -e 's/\./_/g' -e 's/-/_/g'` BuildVendor_CPP=` echo "$BuildVendor" | sed -e 's/\./_/g' -e 's/-/_/g'` BuildOS_CPP=` echo "$BuildOS" | sed -e 's/\./_/g' -e 's/-/_/g'` HostPlatform="$HostArch-$HostVendor-$HostOS" HostPlatform_CPP=`echo "$HostPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'` HostArch_CPP=` echo "$HostArch" | sed -e 's/\./_/g' -e 's/-/_/g'` HostVendor_CPP=` echo "$HostVendor" | sed -e 's/\./_/g' -e 's/-/_/g'` HostOS_CPP=` echo "$HostOS" | sed -e 's/\./_/g' -e 's/-/_/g'` TargetPlatform="$TargetArch-$TargetVendor-$TargetOS" TargetPlatform_CPP=`echo "$TargetPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'` TargetArch_CPP=` echo "$TargetArch" | sed -e 's/\./_/g' -e 's/-/_/g'` TargetVendor_CPP=` echo "$TargetVendor" | sed -e 's/\./_/g' -e 's/-/_/g'` TargetOS_CPP=` echo "$TargetOS" | sed -e 's/\./_/g' -e 's/-/_/g'` # we intend to pass trough --targets to llvm as is. LLVMTarget_CPP=` echo "$LlvmTarget"` echo "GHC build : $BuildPlatform" echo "GHC host : $HostPlatform" echo "GHC target : $TargetPlatform" echo "LLVM target: $LlvmTarget" AC_SUBST(BuildPlatform) AC_SUBST(HostPlatform) AC_SUBST(TargetPlatform) AC_SUBST(HostPlatform_CPP) AC_SUBST(BuildPlatform_CPP) AC_SUBST(TargetPlatform_CPP) AC_SUBST(HostArch_CPP) AC_SUBST(BuildArch_CPP) AC_SUBST(TargetArch_CPP) AC_SUBST(HostOS_CPP) AC_SUBST(BuildOS_CPP) AC_SUBST(TargetOS_CPP) AC_SUBST(LLVMTarget_CPP) AC_SUBST(HostVendor_CPP) AC_SUBST(BuildVendor_CPP) AC_SUBST(TargetVendor_CPP) AC_SUBST(exeext_host) AC_SUBST(exeext_target) AC_SUBST(soext_host) AC_SUBST(soext_target) ]) # FPTOOLS_SET_HASKELL_PLATFORM_VARS # ---------------------------------- # Set the Haskell platform variables AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS], [ checkArch() { case [$]1 in i386) test -z "[$]2" || eval "[$]2=ArchX86" ;; x86_64|amd64) test -z "[$]2" || eval "[$]2=ArchX86_64" ;; powerpc) test -z "[$]2" || eval "[$]2=ArchPPC" ;; powerpc64) test -z "[$]2" || eval "[$]2=\"ArchPPC_64 {ppc_64ABI = ELF_V1}\"" ;; powerpc64le) test -z "[$]2" || eval "[$]2=\"ArchPPC_64 {ppc_64ABI = ELF_V2}\"" ;; sparc) test -z "[$]2" || eval "[$]2=ArchSPARC" ;; sparc64) test -z "[$]2" || eval "[$]2=ArchSPARC64" ;; arm) GET_ARM_ISA() test -z "[$]2" || eval "[$]2=\"ArchARM {armISA = \$ARM_ISA, armISAExt = \$ARM_ISA_EXT, armABI = \$ARM_ABI}\"" ;; aarch64) test -z "[$]2" || eval "[$]2=ArchARM64" ;; alpha) test -z "[$]2" || eval "[$]2=ArchAlpha" ;; mips|mipseb) test -z "[$]2" || eval "[$]2=ArchMipseb" ;; mipsel) test -z "[$]2" || eval "[$]2=ArchMipsel" ;; hppa|hppa1_1|ia64|m68k|nios2|riscv32|riscv64|rs6000|s390|s390x|sh4|vax) test -z "[$]2" || eval "[$]2=ArchUnknown" ;; *) echo "Unknown arch [$]1" exit 1 ;; esac } checkVendor() { case [$]1 in dec|none|unknown|hp|apple|next|sun|sgi|ibm|montavista|portbld|alpine) ;; *) AC_MSG_WARN([Unknown vendor [$]1]) ;; esac } checkOS() { case [$]1 in linux|linux-android) test -z "[$]2" || eval "[$]2=OSLinux" ;; darwin|ios|watchos|tvos) test -z "[$]2" || eval "[$]2=OSDarwin" ;; solaris2) test -z "[$]2" || eval "[$]2=OSSolaris2" ;; mingw32) test -z "[$]2" || eval "[$]2=OSMinGW32" ;; freebsd) test -z "[$]2" || eval "[$]2=OSFreeBSD" ;; dragonfly) test -z "[$]2" || eval "[$]2=OSDragonFly" ;; kfreebsdgnu) test -z "[$]2" || eval "[$]2=OSKFreeBSD" ;; openbsd) test -z "[$]2" || eval "[$]2=OSOpenBSD" ;; netbsd) test -z "[$]2" || eval "[$]2=OSNetBSD" ;; haiku) test -z "[$]2" || eval "[$]2=OSHaiku" ;; nto-qnx) test -z "[$]2" || eval "[$]2=OSQNXNTO" ;; dragonfly|hpux|linuxaout|freebsd2|nextstep2|nextstep3|sunos4|ultrix) test -z "[$]2" || eval "[$]2=OSUnknown" ;; aix) test -z "[$]2" || eval "[$]2=OSAIX" ;; gnu) test -z "[$]2" || eval "[$]2=OSHurd" ;; *) echo "Unknown OS '[$]1'" exit 1 ;; esac } dnl Note [autoconf assembler checks and -flto] dnl ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ dnl dnl Autoconf's AC_COMPILE_IFELSE macro is fragile in the case of checks dnl which require that the assembler is run. Specifically, GCC does not run dnl the assembler if invoked with `-c -flto`; it merely dumps its internal dnl AST to the object file, to be compiled and assembled during the final dnl link. dnl dnl This can cause configure checks like that for the dnl .subsections_via_symbols directive to pass unexpected (see #16440), dnl leading the build system to incorrectly conclude that the directive is dnl supported. dnl dnl For this reason, it is important that configure checks that rely on the dnl assembler failing use AC_LINK_IFELSE rather than AC_COMPILE_IFELSE, dnl ensuring that the assembler sees the check. dnl dnl ** check for Apple-style dead-stripping support dnl (.subsections-via-symbols assembler directive) AC_MSG_CHECKING(for .subsections_via_symbols) dnl See Note [autoconf assembler checks and -flto] AC_LINK_IFELSE( [AC_LANG_PROGRAM([], [__asm__ (".subsections_via_symbols");])], [AC_MSG_RESULT(yes) HaskellHaveSubsectionsViaSymbols=True AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1], [Define to 1 if Apple-style dead-stripping is supported.]) ], [HaskellHaveSubsectionsViaSymbols=False AC_MSG_RESULT(no)]) dnl ** check for .ident assembler directive AC_MSG_CHECKING(whether your assembler supports .ident directive) dnl See Note [autoconf assembler checks and -flto] AC_LINK_IFELSE( [AC_LANG_PROGRAM([__asm__ (".ident \"GHC x.y.z\"");], [])], [AC_MSG_RESULT(yes) HaskellHaveIdentDirective=True], [AC_MSG_RESULT(no) HaskellHaveIdentDirective=False]) dnl *** check for GNU non-executable stack note support (ELF only) dnl (.section .note.GNU-stack,"",@progbits) dnl This test doesn't work with "gcc -g" in gcc 4.4 (GHC trac #3889: dnl Error: can't resolve `.note.GNU-stack' {.note.GNU-stack section} - `.Ltext0' {.text section} dnl so we empty CFLAGS while running this test CFLAGS2="$CFLAGS" CFLAGS= case $TargetArch in arm) dnl See #13937. progbits="%progbits" ;; *) progbits="@progbits" ;; esac AC_MSG_CHECKING(for GNU non-executable stack support) dnl See Note [autoconf assembler checks and -flto] AC_LINK_IFELSE( dnl the `main` function is placed after the .note.GNU-stack directive dnl so we need to ensure that the active segment is correctly set, dnl otherwise `main` will be placed in the wrong segment. [AC_LANG_PROGRAM([ __asm__ (".section .note.GNU-stack,\"\",$progbits"); __asm__ (".section .text"); ], [0])], [AC_MSG_RESULT(yes) HaskellHaveGnuNonexecStack=True], [AC_MSG_RESULT(no) HaskellHaveGnuNonexecStack=False]) CFLAGS="$CFLAGS2" checkArch "$BuildArch" "HaskellBuildArch" checkVendor "$BuildVendor" checkOS "$BuildOS" "" checkArch "$HostArch" "HaskellHostArch" checkVendor "$HostVendor" checkOS "$HostOS" "" checkArch "$TargetArch" "HaskellTargetArch" checkVendor "$TargetVendor" checkOS "$TargetOS" "HaskellTargetOs" AC_SUBST(HaskellTargetArch) AC_SUBST(HaskellTargetOs) AC_SUBST(HaskellHaveSubsectionsViaSymbols) AC_SUBST(HaskellHaveIdentDirective) AC_SUBST(HaskellHaveGnuNonexecStack) ]) # GET_ARM_ISA # ---------------------------------- # Get info about the ISA on the ARM arch AC_DEFUN([GET_ARM_ISA], [ AC_COMPILE_IFELSE([ AC_LANG_PROGRAM( [], [#if defined(__ARM_ARCH_2__) || \ defined(__ARM_ARCH_3__) || \ defined(__ARM_ARCH_3M__) || \ defined(__ARM_ARCH_4__) || \ defined(__ARM_ARCH_4T__) || \ defined(__ARM_ARCH_5__) || \ defined(__ARM_ARCH_5T__) || \ defined(__ARM_ARCH_5E__) || \ defined(__ARM_ARCH_5TE__) return 0; #else not pre arm v6 #endif] )], [AC_DEFINE(arm_HOST_ARCH_PRE_ARMv6, 1, [ARM pre v6]) AC_DEFINE(arm_HOST_ARCH_PRE_ARMv7, 1, [ARM pre v7]) changequote(, )dnl ARM_ISA=ARMv5 ARM_ISA_EXT="[]" changequote([, ])dnl ], [ AC_COMPILE_IFELSE([ AC_LANG_PROGRAM( [], [#if defined(__ARM_ARCH_6__) || \ defined(__ARM_ARCH_6J__) || \ defined(__ARM_ARCH_6T2__) || \ defined(__ARM_ARCH_6Z__) || \ defined(__ARM_ARCH_6ZK__) || \ defined(__ARM_ARCH_6K__) || \ defined(__ARM_ARCH_6KZ__) || \ defined(__ARM_ARCH_6M__) return 0; #else not pre arm v7 #endif] )], [AC_DEFINE(arm_HOST_ARCH_PRE_ARMv7, 1, [ARM pre v7]) ARM_ISA=ARMv6 AC_COMPILE_IFELSE([ AC_LANG_PROGRAM( [], [#if defined(__VFP_FP__) return 0; #else no vfp #endif] )], [changequote(, )dnl ARM_ISA_EXT="[VFPv2]" changequote([, ])dnl ], [changequote(, )dnl ARM_ISA_EXT="[]" changequote([, ])dnl ] )], [changequote(, )dnl ARM_ISA=ARMv7 ARM_ISA_EXT="[VFPv3,NEON]" changequote([, ])dnl ]) ]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [], [#if defined(__SOFTFP__) return 0; #else not softfp #endif] )], [changequote(, )dnl ARM_ABI="SOFT" changequote([, ])dnl ], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [], [#if defined(__ARM_PCS_VFP) return 0; #else no hard float ABI #endif] )], [ARM_ABI="HARD"], [ARM_ABI="SOFTFP"] )] ) AC_SUBST(ARM_ISA) ]) # FP_SETTINGS # ---------------------------------- # Set the variables used in the settings file AC_DEFUN([FP_SETTINGS], [ if test "$windows" = YES -a "$EnableDistroToolchain" = "NO" then mingw_bin_prefix='$$tooldir/mingw/bin/' SettingsCCompilerCommand="${mingw_bin_prefix}gcc.exe" SettingsHaskellCPPCommand="${mingw_bin_prefix}gcc.exe" SettingsHaskellCPPFlags="$HaskellCPPArgs" SettingsLdCommand="${mingw_bin_prefix}ld.exe" SettingsArCommand="${mingw_bin_prefix}ar.exe" SettingsRanlibCommand="${mingw_bin_prefix}ranlib.exe" SettingsDllWrapCommand="${mingw_bin_prefix}dllwrap.exe" SettingsWindresCommand="${mingw_bin_prefix}windres.exe" SettingsTouchCommand='$$topdir/bin/touchy.exe' elif test "$EnableDistroToolchain" = "YES" then SettingsCCompilerCommand="$(basename $CC)" SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2" SettingsCxxCompilerFlags="$CONF_CXX_OPTS_STAGE2" SettingsHaskellCPPCommand="$(basename $HaskellCPPCmd)" SettingsHaskellCPPFlags="$HaskellCPPArgs" SettingsLdCommand="$(basename $LdCmd)" SettingsArCommand="$(basename $ArCmd)" SettingsDllWrapCommand="$(basename $DllWrapCmd)" SettingsWindresCommand="$(basename $WindresCmd)" SettingsTouchCommand='$$topdir/bin/touchy.exe' else SettingsCCompilerCommand="$CC" SettingsHaskellCPPCommand="$HaskellCPPCmd" SettingsHaskellCPPFlags="$HaskellCPPArgs" SettingsLdCommand="$LdCmd" SettingsArCommand="$ArCmd" SettingsRanlibCommand="$RanlibCmd" if test -z "$DllWrapCmd" then SettingsDllWrapCommand="/bin/false" else SettingsDllWrapCommand="$DllWrapCmd" fi if test -z "$WindresCmd" then SettingsWindresCommand="/bin/false" else SettingsWindresCommand="$WindresCmd" fi SettingsTouchCommand='touch' fi if test -z "$LibtoolCmd" then SettingsLibtoolCommand="libtool" else SettingsLibtoolCommand="$LibtoolCmd" fi if test -z "$ClangCmd" then SettingsClangCommand="clang" else SettingsClangCommand="$ClangCmd" fi if test -z "$LlcCmd" then SettingsLlcCommand="llc" else SettingsLlcCommand="$LlcCmd" fi if test -z "$OptCmd" then SettingsOptCommand="opt" else SettingsOptCommand="$OptCmd" fi SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2" SettingsCxxCompilerFlags="$CONF_CXX_OPTS_STAGE2" SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2" SettingsCCompilerSupportsNoPie="$CONF_GCC_SUPPORTS_NO_PIE" SettingsLdFlags="$CONF_LD_LINKER_OPTS_STAGE2" AC_SUBST(SettingsCCompilerCommand) AC_SUBST(SettingsHaskellCPPCommand) AC_SUBST(SettingsHaskellCPPFlags) AC_SUBST(SettingsCCompilerFlags) AC_SUBST(SettingsCxxCompilerFlags) AC_SUBST(SettingsCCompilerLinkFlags) AC_SUBST(SettingsCCompilerSupportsNoPie) AC_SUBST(SettingsLdCommand) AC_SUBST(SettingsLdFlags) AC_SUBST(SettingsArCommand) AC_SUBST(SettingsRanlibCommand) AC_SUBST(SettingsDllWrapCommand) AC_SUBST(SettingsWindresCommand) AC_SUBST(SettingsLibtoolCommand) AC_SUBST(SettingsTouchCommand) AC_SUBST(SettingsClangCommand) AC_SUBST(SettingsLlcCommand) AC_SUBST(SettingsOptCommand) ]) # Helper for cloning a shell variable's state AC_DEFUN([FP_COPY_SHELLVAR], [if test -n "${$1+set}"; then $2="$$1"; else unset $2; fi ]) # FP_SET_CFLAGS_C99 # ---------------------------------- # figure out which CFLAGS are needed to place the compiler into C99 mode # $1 is name of CC variable (unmodified) # $2 is name of CC flags variable (augmented if needed) # $3 is name of CPP flags variable (augmented if needed) AC_DEFUN([FP_SET_CFLAGS_C99], [ dnl save current state of AC_PROG_CC_C99 FP_COPY_SHELLVAR([CC],[fp_save_CC]) FP_COPY_SHELLVAR([CFLAGS],[fp_save_CFLAGS]) FP_COPY_SHELLVAR([CPPFLAGS],[fp_save_CPPFLAGS]) FP_COPY_SHELLVAR([ac_cv_prog_cc_c99],[fp_save_cc_c99]) dnl set local state CC="$$1" CFLAGS="$$2" CPPFLAGS="$$3" unset ac_cv_prog_cc_c99 dnl perform detection _AC_PROG_CC_C99 fp_cc_c99="$ac_cv_prog_cc_c99" case "x$ac_cv_prog_cc_c99" in x) ;; # noop xno) AC_MSG_ERROR([C99-compatible compiler needed]) ;; *) $2="$$2 $ac_cv_prog_cc_c99" $3="$$3 $ac_cv_prog_cc_c99" ;; esac dnl restore saved state FP_COPY_SHELLVAR([fp_save_CC],[CC]) FP_COPY_SHELLVAR([fp_save_CFLAGS],[CFLAGS]) FP_COPY_SHELLVAR([fp_save_CPPFLAGS],[CPPFLAGS]) FP_COPY_SHELLVAR([fp_save_cc_c99],[ac_cv_prog_cc_c99]) dnl cleanup unset fp_save_CC unset fp_save_CFLAGS unset fp_save_cc_c99 ]) # FPTOOLS_SET_C_LD_FLAGS # ---------------------------------- # Set the C, LD and CPP flags for a given platform. # $1 is the platform # $2 is the name of the CC flags variable # $3 is the name of the linker flags variable when linking with gcc # $4 is the name of the linker flags variable when linking with ld # $5 is the name of the CPP flags variable AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS], [ AC_MSG_CHECKING([Setting up $2, $3, $4 and $5]) case $$1 in i386-*) # Workaround for #7799 $2="$$2 -U__i686" ;; esac case $$1 in i386-unknown-mingw32) $2="$$2 -march=i686" ;; i386-portbld-freebsd*) $2="$$2 -march=i686" ;; x86_64-unknown-solaris2) $2="$$2 -m64" $3="$$3 -m64" $4="$$4 -m64" $5="$$5 -m64" ;; alpha-*) # For now, to suppress the gcc warning "call-clobbered # register used for global register variable", we simply # disable all warnings altogether using the -w flag. Oh well. $2="$$2 -w -mieee -D_REENTRANT" $3="$$3 -w -mieee -D_REENTRANT" $5="$$5 -w -mieee -D_REENTRANT" ;; hppa*) # ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi! # (very nice, but too bad the HP /usr/include files don't agree.) $2="$$2 -D_HPUX_SOURCE" $3="$$3 -D_HPUX_SOURCE" $5="$$5 -D_HPUX_SOURCE" ;; arm*freebsd*) # On arm/freebsd, tell gcc to generate Arm # instructions (ie not Thumb). $2="$$2 -marm" $3="$$3 -Wl,-z,noexecstack" $4="$$4 -z noexecstack" ;; arm*linux*) # On arm/linux and arm/android, tell gcc to generate Arm # instructions (ie not Thumb). $2="$$2 -marm" $3="$$3 -Wl,-z,noexecstack" $4="$$4 -z noexecstack" ;; aarch64*freebsd*) $3="$$3 -Wl,-z,noexecstack" $4="$$4 -z noexecstack" ;; aarch64*linux*) $3="$$3 -Wl,-z,noexecstack" $4="$$4 -z noexecstack" ;; powerpc-ibm-aix*) # We need `-D_THREAD_SAFE` to unlock the thread-local `errno`. $2="$$2 -D_THREAD_SAFE" $3="$$3 -D_THREAD_SAFE -Wl,-bnotextro" $4="$$4 -bnotextro" $5="$$5 -D_THREAD_SAFE" ;; x86_64-*-openbsd*) # We need -z wxneeded at least to link ghc-stage2 to workaround # W^X issue in GHCi on OpenBSD current (as of Aug 2016) $3="$$3 -Wl,-z,wxneeded" $4="$$4 -z wxneeded" ;; esac AC_MSG_RESULT([done]) ]) # FP_VISIBILITY_HIDDEN # ---------------------------------- # Is the visibility hidden attribute supported? AC_DEFUN([FP_VISIBILITY_HIDDEN], [ AC_MSG_CHECKING([whether __attribute__((visibility("hidden"))) is supported]) echo '__attribute__((visibility("hidden"))) void foo(void) {}' > conftest.c if $CC -Wall -Werror -c conftest.c > /dev/null 2>&1 then AC_MSG_RESULT([yes]) AC_DEFINE(HAS_VISIBILITY_HIDDEN, 1, [Has visibility hidden]) else AC_MSG_RESULT([no]) fi rm -f conftest.c conftest.o ]) # FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN # ---------------------------------- # Little endian ARM on Linux with some ABIs has big endian word order # in doubles. Define FLOAT_WORDS_BIGENDIAN if this is the case. AC_DEFUN([FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN], [AC_CACHE_CHECK([whether float word order is big endian], [fptools_cv_float_word_order_bigendian], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [#if defined(__FLOAT_WORD_ORDER) && __FLOAT_WORD_ORDER == BIG_ENDIAN return 0; #else not float word order big endian #endif] )], [fptools_cv_float_word_order_bigendian=yes], [fptools_cv_float_word_order_bigendian=no]) ]) case $fptools_cv_float_word_order_bigendian in yes) AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1, [Define to 1 if your processor stores words of floats with the most significant byte first]) ;; esac ]) # FP_PROG_CONTEXT_DIFF # -------------------- # Figure out how to do context diffs. Sets the output variable ContextDiffCmd. # # Note: NeXTStep thinks diff'ing a file against itself is "trouble". AC_DEFUN([FP_PROG_CONTEXT_DIFF], [AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff], [echo foo > conftest1 echo foo > conftest2 fp_cv_context_diff=no for fp_var in '-U 1' '-u1' '-C 1' '-c1' do if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then fp_cv_context_diff="diff $fp_var" break fi done]) if test x"$fp_cv_context_diff" = xno; then AC_MSG_ERROR([cannot figure out how to do context diffs]) fi AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff]) ])# FP_PROG_CONTEXT_DIFF # FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS) # -------------------------------------------------------- # Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for # compilation. Execute IF-FAILS when unable to determine the value. Works for # cross-compilation, too. # # Implementation note: We are lazy and use an internal autoconf macro, but it # is supported in autoconf versions 2.50 up to the actual 2.57, so there is # little risk. AC_DEFUN([FP_COMPUTE_INT], [_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl ])# FP_COMPUTE_INT # FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES]) # ------------------------------------------------------------------ # A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a # given type. Defines ALIGNMENT_TYPE. AC_DEFUN([FP_CHECK_ALIGNMENT], [AS_LITERAL_IF(m4_translit([[$1]], [*], [p]), [], [AC_FATAL([$0: requires literal arguments])])[]dnl AC_CHECK_TYPE([$1], [], [], [$3])[]dnl m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl AC_CACHE_CHECK([alignment of $1], [fp_Cache], [if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then FP_COMPUTE_INT([offsetof(struct { char c; $1 ty; },ty)], [fp_Cache], [AC_INCLUDES_DEFAULT([$3])], [AC_MSG_ERROR([cannot compute alignment ($1) See `config.log' for more details.], [77])]) else fp_Cache=0 fi])[]dnl AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl m4_popdef([fp_Cache])[]dnl ])# FP_CHECK_ALIGNMENT # FP_CHECK_SIZEOF_AND_ALIGNMENT(TYPE) # ------------------------------------------------------------------ # Combines AC_CHECK_SIZEOF and FP_CHECK_ALIGNMENT. AC_DEFUN([FP_CHECK_SIZEOF_AND_ALIGNMENT], [AC_CHECK_SIZEOF([$1]) FP_CHECK_ALIGNMENT([$1]) ])# FP_CHECK_SIZEOF_AND_ALIGNMENT # FP_LEADING_UNDERSCORE # --------------------- # Test for determining whether symbol names have a leading underscore. We assume # that they _haven't_ if anything goes wrong. Sets the output variable # LeadingUnderscore to YES or NO and defines LEADING_UNDERSCORE correspondingly. # # Some nlist implementations seem to try to be compatible by ignoring a leading # underscore sometimes (eg. FreeBSD). We therefore have to work around this by # checking for *no* leading underscore first. Sigh. --SDM # # Similarly on OpenBSD, but this test doesn't help. -- dons # AC_DEFUN([FP_LEADING_UNDERSCORE], [AC_CHECK_LIB([elf], [nlist], [LIBS="-lelf $LIBS"]) AC_CACHE_CHECK([leading underscore in symbol names], [fptools_cv_leading_underscore], [ # Hack!: nlist() under Digital UNIX insist on there being an _, # but symbol table listings shows none. What is going on here?!? case $TargetPlatform in # Apples mach-o platforms use leading underscores *-apple-*) fptools_cv_leading_underscore=yes;; *linux-android*) fptools_cv_leading_underscore=no;; *openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore case $build in i386-*2\.@<:@0-9@:>@ | i386-*3\.@<:@0-3@:>@ ) fptools_cv_leading_underscore=yes ;; *) fptools_cv_leading_underscore=no ;; esac ;; i386-unknown-mingw32) fptools_cv_leading_underscore=yes;; x86_64-unknown-mingw32) fptools_cv_leading_underscore=no;; *) AC_RUN_IFELSE([AC_LANG_SOURCE([[#if defined(HAVE_NLIST_H) #include struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}}; struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}}; #endif int main(argc, argv) int argc; char **argv; { #if defined(HAVE_NLIST_H) if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0) exit(1); if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0) exit(0); #endif exit(1); }]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no]) ;; esac]); AC_SUBST([LeadingUnderscore], [`echo $fptools_cv_leading_underscore | sed 'y/yesno/YESNO/'`]) if test x"$fptools_cv_leading_underscore" = xyes; then AC_SUBST([CabalLeadingUnderscore],[True]) AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.]) else AC_SUBST([CabalLeadingUnderscore],[False]) fi ])# FP_LEADING_UNDERSCORE # FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) # ---------------------------------------------------------------------------------- # Compare dotted version numbers VERSION1 and VERSION2 lexicographically according # to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge). AC_DEFUN([FP_COMPARE_VERSIONS], [fp_version1=$1; fp_version2=$3 fp_save_IFS=$IFS; IFS='.' while test x"$fp_version1" != x || test x"$fp_version2" != x do set dummy $fp_version1; shift fp_num1="" test $[@%:@] = 0 || { fp_num1="[$]1"; shift; } test x"$fp_num1" = x && fp_num1="0" fp_version1="[$]*" set dummy $fp_version2; shift fp_num2="" test $[@%:@] = 0 || { fp_num2="[$]1"; shift; } test x"$fp_num2" = x && fp_num2="0" fp_version2="[$]*" test "$fp_num1" = "$fp_num2" || break; done IFS=$fp_save_IFS AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl ])# FP_COMPARE_VERSIONS dnl dnl Check for Happy and version: dnl dnl 1. Use happy specified in env var HAPPY dnl 2. Find happy in path dnl 3. Check happy version dnl dnl If you increase the minimum version requirement, please also update: dnl https://gitlab.haskell.org/ghc/ghc/wikis/building/preparation/tools dnl AC_DEFUN([FPTOOLS_HAPPY], [AC_PATH_PROG(HAPPY,[happy],) AC_SUBST(HappyCmd,$HAPPY) AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version, changequote(, )dnl [ if test x"$HappyCmd" != x; then fptools_cv_happy_version=`"$HappyCmd" -v | grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'` ; else fptools_cv_happy_version=""; fi; changequote([, ])dnl ]) if test ! -f compiler/parser/Parser.hs || test ! -f compiler/cmm/CmmParse.hs then FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.19.10], [AC_MSG_ERROR([Happy version 1.19.10 or later is required to compile GHC.])])[] fi HappyVersion=$fptools_cv_happy_version; AC_SUBST(HappyVersion) ]) dnl dnl Check for Alex and version. dnl dnl 1. Use alex specified in env var ALEX dnl 2. Find alex in path dnl 3. Check alex version dnl dnl If you increase the minimum version requirement, please also update: dnl https://gitlab.haskell.org/ghc/ghc/wikis/building/preparation/tools dnl AC_DEFUN([FPTOOLS_ALEX], [AC_PATH_PROG(ALEX,[alex],) AC_SUBST(AlexCmd,$ALEX) AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version, changequote(, )dnl [if test x"$AlexCmd" != x; then fptools_cv_alex_version=`"$AlexCmd" -v | grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'` ; else fptools_cv_alex_version=""; fi; changequote([, ])dnl ]) FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[3.1.7], [AC_MSG_ERROR([Alex version 3.1.7 or later is required to compile GHC.])])[] AlexVersion=$fptools_cv_alex_version; AC_SUBST(AlexVersion) ]) # FP_PROG_LD_FLAG # --------------- # Sets the output variable $2 to $1 if ld supports the $1 flag. # Otherwise the variable's value is empty. AC_DEFUN([FP_PROG_LD_FLAG], [ AC_CACHE_CHECK([whether ld understands $1], [fp_cv_$2], [echo 'int foo() { return 0; }' > conftest.c ${CC-cc} -c conftest.c if ${LdCmd} -r $1 -o conftest2.o conftest.o > /dev/null 2>&1; then fp_cv_$2=$1 else fp_cv_$2= fi rm -rf conftest*]) $2=$fp_cv_$2 ])# FP_PROG_LD_FLAG # FP_PROG_LD_BUILD_ID # ------------ # Sets the output variable LdHasBuildId to YES if ld supports # --build-id, or NO otherwise. AC_DEFUN([FP_PROG_LD_BUILD_ID], [ AC_CACHE_CHECK([whether ld understands --build-id], [fp_cv_ld_build_id], [echo 'int foo() { return 0; }' > conftest.c ${CC-cc} -c conftest.c if ${LdCmd} -r --build-id=none -o conftest2.o conftest.o > /dev/null 2>&1; then fp_cv_ld_build_id=yes else fp_cv_ld_build_id=no fi rm -rf conftest*]) if test "$fp_cv_ld_build_id" = yes; then LdHasBuildId=YES else LdHasBuildId=NO fi AC_SUBST([LdHasBuildId]) ])# FP_PROG_LD_BUILD_ID # FP_PROG_LD_IS_GNU # ----------------- # Sets the output variable LdIsGNULd to YES or NO, depending on whether it is # GNU ld or not. AC_DEFUN([FP_PROG_LD_IS_GNU],[ AC_CACHE_CHECK([whether ld is GNU ld], [fp_cv_gnu_ld], [[if ${LdCmd} --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then fp_cv_gnu_ld=YES else fp_cv_gnu_ld=NO fi]]) AC_SUBST([LdIsGNULd],["$fp_cv_gnu_ld"]) ])# FP_PROG_LD_IS_GNU # FP_PROG_LD_NO_COMPACT_UNWIND # ---------------------------- # Sets the output variable LdHasNoCompactUnwind to YES if ld supports # -no_compact_unwind, or NO otherwise. AC_DEFUN([FP_PROG_LD_NO_COMPACT_UNWIND], [ AC_CACHE_CHECK([whether ld understands -no_compact_unwind], [fp_cv_ld_no_compact_unwind], [echo 'int foo() { return 0; }' > conftest.c ${CC-cc} -c conftest.c if ${LdCmd} -r -no_compact_unwind -o conftest2.o conftest.o > /dev/null 2>&1; then fp_cv_ld_no_compact_unwind=yes else fp_cv_ld_no_compact_unwind=no fi rm -rf conftest*]) if test "$fp_cv_ld_no_compact_unwind" = yes; then LdHasNoCompactUnwind=YES else LdHasNoCompactUnwind=NO fi AC_SUBST([LdHasNoCompactUnwind]) ])# FP_PROG_LD_NO_COMPACT_UNWIND # FP_PROG_LD_FILELIST # ------------------- # Sets the output variable LdHasFilelist to YES if ld supports # -filelist, or NO otherwise. AC_DEFUN([FP_PROG_LD_FILELIST], [ AC_CACHE_CHECK([whether ld understands -filelist], [fp_cv_ld_has_filelist], [ echo 'int foo() { return 0; }' > conftest1.c echo 'int bar() { return 0; }' > conftest2.c ${CC-cc} -c conftest1.c ${CC-cc} -c conftest2.c echo conftest1.o > conftest.o-files echo conftest2.o >> conftest.o-files if ${LdCmd} -r -filelist conftest.o-files -o conftest.o > /dev/null 2>&1 then fp_cv_ld_has_filelist=yes else fp_cv_ld_has_filelist=no fi rm -rf conftest* ]) if test "$fp_cv_ld_has_filelist" = yes; then LdHasFilelist=YES else LdHasFilelist=NO fi AC_SUBST([LdHasFilelist]) ])# FP_PROG_LD_FILELIST # FP_PROG_AR # ---------- # Sets fp_prog_ar to a path to ar. Exits if no ar can be found # The host normalization on Windows breaks autoconf, it no longer # thinks that target == host so it never checks the unqualified # tools for Windows. See #14274. AC_DEFUN([FP_PROG_AR], [if test -z "$fp_prog_ar"; then if test "$HostOS" = "mingw32" then AC_PATH_PROG([fp_prog_ar], [ar]) if test -n "$fp_prog_ar"; then fp_prog_ar=$(cygpath -m $fp_prog_ar) fi else AC_CHECK_TARGET_TOOL([fp_prog_ar], [ar]) fi fi if test -z "$fp_prog_ar"; then AC_MSG_ERROR([cannot find ar in your PATH, no idea how to make a library]) fi ])# FP_PROG_AR # FP_PROG_AR_IS_GNU # ----------------- # Sets fp_prog_ar_is_gnu to yes or no, depending on whether it is GNU ar or not. AC_DEFUN([FP_PROG_AR_IS_GNU], [AC_REQUIRE([FP_PROG_AR]) AC_CACHE_CHECK([whether $fp_prog_ar is GNU ar], [fp_cv_prog_ar_is_gnu], [if "$fp_prog_ar" --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then fp_cv_prog_ar_is_gnu=yes else fp_cv_prog_ar_is_gnu=no fi]) fp_prog_ar_is_gnu=$fp_cv_prog_ar_is_gnu AC_SUBST([ArIsGNUAr], [`echo $fp_prog_ar_is_gnu | tr 'a-z' 'A-Z'`]) ])# FP_PROG_AR_IS_GNU # FP_PROG_AR_SUPPORTS_ATFILE # ----------------- # Sets fp_prog_ar_supports_atfile to yes or no, depending on whether # or not it supports the @file syntax AC_DEFUN([FP_PROG_AR_SUPPORTS_ATFILE], [AC_REQUIRE([FP_PROG_AR]) AC_REQUIRE([FP_PROG_AR_ARGS]) AC_CACHE_CHECK([whether $fp_prog_ar supports @file], [fp_cv_prog_ar_supports_atfile], [ rm -f conftest* touch conftest.file echo conftest.file > conftest.atfile echo conftest.file >> conftest.atfile "$fp_prog_ar" $fp_prog_ar_args conftest.a @conftest.atfile > /dev/null 2>&1 fp_prog_ar_supports_atfile_tmp=`"$fp_prog_ar" t conftest.a 2> /dev/null | grep -c conftest.file` rm -f conftest* if test "$fp_prog_ar_supports_atfile_tmp" -eq 2 then fp_cv_prog_ar_supports_atfile=yes else fp_cv_prog_ar_supports_atfile=no fi]) fp_prog_ar_supports_atfile=$fp_cv_prog_ar_supports_atfile AC_SUBST([ArSupportsAtFile], [`echo $fp_prog_ar_supports_atfile | tr 'a-z' 'A-Z'`]) ])# FP_PROG_AR_SUPPORTS_ATFILE # FP_PROG_AR_ARGS # --------------- # Sets fp_prog_ar_args to the arguments for ar and the output variable ArCmd # to an invocation of ar including these arguments. AC_DEFUN([FP_PROG_AR_ARGS], [AC_REQUIRE([FP_PROG_AR_IS_GNU]) AC_CACHE_CHECK([for ar arguments], [fp_cv_prog_ar_args], [ # GNU ar needs special treatment: it appears to have problems with # object files with the same name if you use the 's' modifier, but # simple 'ar q' works fine, and doesn't need a separate ranlib. if test $fp_prog_ar_is_gnu = yes; then fp_cv_prog_ar_args="q" else touch conftest.dummy for fp_var in qclsZ qcls qcs qcl qc ; do rm -f conftest.a if "$fp_prog_ar" $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null ; then # Also check that a result was created; it seems some llvm-ar versions # exit with code zero even if they fail to parse the command line. if test -f conftest.a ; then fp_cv_prog_ar_args=$fp_var break fi fi done rm -f conftest* if test -z "$fp_cv_prog_ar_args"; then AC_MSG_ERROR([cannot figure out how to use your $fp_prog_ar]) fi fi]) fp_prog_ar_args=$fp_cv_prog_ar_args AC_SUBST([ArCmd], ["$fp_prog_ar"]) AC_SUBST([ArArgs], ["$fp_prog_ar_args"]) ])# FP_PROG_AR_ARGS # FP_PROG_AR_NEEDS_RANLIB # ----------------------- # Sets the output variable RANLIB_CMD to "ranlib" if it is needed and # found, to "true" otherwise. Sets REAL_RANLIB_CMD to the ranlib program, # even if we don't need ranlib (libffi might still need it). AC_DEFUN([FP_PROG_AR_NEEDS_RANLIB],[ AC_REQUIRE([FP_PROG_AR_IS_GNU]) AC_REQUIRE([FP_PROG_AR_ARGS]) AC_REQUIRE([AC_PROG_CC]) AC_PROG_RANLIB if test $fp_prog_ar_is_gnu = yes then fp_cv_prog_ar_needs_ranlib=no elif test "$TargetVendor_CPP" = "apple" then # It's quite tedious to check for Apple's crazy timestamps in # .a files, so we hardcode it. fp_cv_prog_ar_needs_ranlib=yes else case $fp_prog_ar_args in *s*) fp_cv_prog_ar_needs_ranlib=no;; *) fp_cv_prog_ar_needs_ranlib=yes;; esac fi # workaround for AC_PROG_RANLIB which sets RANLIB to `:' when # ranlib is missing on the target OS. The problem is that # ghc-cabal cannot execute `:' which is a shell built-in but can # execute `true' which is usually simple program supported by the # OS. # Fixes #8795 if test "$RANLIB" = ":" then RANLIB="true" fi REAL_RANLIB_CMD="$RANLIB" if test $fp_cv_prog_ar_needs_ranlib = yes then RANLIB_CMD="$RANLIB" else RANLIB_CMD="true" fi AC_SUBST([REAL_RANLIB_CMD]) AC_SUBST([RANLIB_CMD]) ])# FP_PROG_AR_NEEDS_RANLIB # FP_GCC_VERSION # ----------- # Extra testing of the result AC_PROG_CC, testing the gcc version no. Sets the # output variable GccVersion. AC_DEFUN([FP_GCC_VERSION], [AC_REQUIRE([AC_PROG_CC]) if test -z "$CC" then AC_MSG_ERROR([gcc is required]) fi GccLT46=NO AC_CACHE_CHECK([version of gcc], [fp_cv_gcc_version], [ # Be sure only to look at the first occurrence of the "version " string; # Some Apple compilers emit multiple messages containing this string. fp_cv_gcc_version="`$CC -v 2>&1 | sed -n -e '1,/version /s/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/p'`" FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.4], [AC_MSG_ERROR([Need at least gcc version 4.4 (4.7+ recommended)])]) FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.6], GccLT46=YES) ]) AC_SUBST([GccVersion], [$fp_cv_gcc_version]) AC_SUBST(GccLT46) ])# FP_GCC_VERSION dnl Check to see if the C compiler is clang or llvm-gcc dnl GccIsClang=NO AC_DEFUN([FP_CC_LLVM_BACKEND], [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([whether C compiler is clang]) $CC -x c /dev/null -dM -E > conftest.txt 2>&1 if grep "__clang__" conftest.txt >/dev/null 2>&1; then AC_SUBST([CC_CLANG_BACKEND], [1]) AC_SUBST([CC_LLVM_BACKEND], [1]) GccIsClang=YES AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) AC_MSG_CHECKING([whether C compiler has an LLVM back end]) if grep "__llvm__" conftest.txt >/dev/null 2>&1; then AC_SUBST([CC_CLANG_BACKEND], [0]) AC_SUBST([CC_LLVM_BACKEND], [1]) AC_MSG_RESULT([yes]) else AC_SUBST([CC_CLANG_BACKEND], [0]) AC_SUBST([CC_LLVM_BACKEND], [0]) AC_MSG_RESULT([no]) fi fi AC_SUBST(GccIsClang) rm -f conftest.txt ]) # FP_GCC_SUPPORTS__ATOMICS # ------------------------ # Does gcc support the __atomic_* family of builtins? AC_DEFUN([FP_GCC_SUPPORTS__ATOMICS], [ AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([whether GCC supports __atomic_ builtins]) echo 'int test(int *x) { int y; __atomic_load(x, &y, __ATOMIC_SEQ_CST); return y; }' > conftest.c if $CC -c conftest.c > /dev/null 2>&1; then CONF_GCC_SUPPORTS__ATOMICS=YES AC_MSG_RESULT([yes]) else CONF_GCC_SUPPORTS__ATOMICS=NO AC_MSG_RESULT([no]) fi rm -f conftest.c conftest.o ]) # FP_GCC_SUPPORTS_NO_PIE # ---------------------- # Does gcc support the -no-pie option? If so we should pass it to gcc when # joining objects since -pie may be enabled by default. AC_DEFUN([FP_GCC_SUPPORTS_NO_PIE], [ AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([whether GCC supports -no-pie]) echo 'int main() { return 0; }' > conftest.c # Some GCC versions only warn when passed an unrecognized flag. if $CC -no-pie -Werror -x c /dev/null -dM -E > conftest.txt 2>&1 && ! grep -i unrecognized conftest.txt > /dev/null 2>&1; then CONF_GCC_SUPPORTS_NO_PIE=YES AC_MSG_RESULT([yes]) else CONF_GCC_SUPPORTS_NO_PIE=NO AC_MSG_RESULT([no]) fi rm -f conftest.c conftest.o conftest ]) # FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR, # [VALUE-IF-NOT-FOUND], [PATH], [REJECT]) # ----------------------------------------------------- # HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path # of PROG-TO-CHECK-FOR when found. AC_DEFUN([FP_CHECK_PROG], [AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl )# FP_CHECK_PROC # FP_PROG_FIND # ------------ # Find a non-WinDoze version of the "find" utility. AC_DEFUN([FP_PROG_FIND], [AC_PATH_PROGS([fp_prog_find], [gfind find], find) echo foo > conftest.txt $fp_prog_find conftest.txt -print > conftest.out 2>&1 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then # OK, looks like a real "find". FindCmd="$fp_prog_find" else # Found a poor WinDoze version of "find", ignore it. AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it]) FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find]) fi rm -f conftest.txt conftest.out AC_SUBST([FindCmd])[]dnl ])# FP_PROG_FIND # FP_PROG_SORT # ------------ # Find a Unix-like sort AC_DEFUN([FP_PROG_SORT], [AC_PATH_PROG([fp_prog_sort], [sort]) echo conwip > conftest.txt $fp_prog_sort -f conftest.txt > conftest.out 2>&1 if grep 'conwip' conftest.out > /dev/null 2>&1 ; then # The goods SortCmd="$fp_prog_sort" else # Summink else..pick next one. AC_MSG_WARN([$fp_prog_sort looks like a non-*nix sort, ignoring it]) FP_CHECK_PROG([SortCmd], [sort], [], [], [$fp_prog_sort]) fi rm -f conftest.txt conftest.out AC_SUBST([SortCmd])[]dnl ])# FP_PROG_SORT dnl dnl FPTOOLS_NOCACHE_CHECK prints a message, then sets the dnl values of the second argument to the result of running dnl the commands given by the third. It does not cache its dnl result, so it is suitable for checks which should be dnl run every time. dnl AC_DEFUN([FPTOOLS_NOCACHE_CHECK], [AC_MSG_CHECKING([$1]) $3 AC_MSG_RESULT([$][$2]) ]) dnl dnl FPTOOLS_GHC_VERSION(version) dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel]) dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel) dnl dnl Test for version of installed ghc. Uses $GHC. dnl [original version pinched from c2hs] dnl AC_DEFUN([FPTOOLS_GHC_VERSION], [FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc], ["${WithGhc-ghc}" --version > conftestghc 2>&1 cat conftestghc >&AS_MESSAGE_LOG_FD #Useless Use Of cat award... fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'` rm -fr conftest* if test "[$]fptools_version_of_ghc" = "" then fptools_version_of_ghc='unknown' fi fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'` fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'` fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'` # if test "[$]fptools_version_of_ghc[_pl]" = "" then fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]" fptools_version_of_ghc[_pl]="0" else fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]" fi # ifelse($#, [1], [dnl [$1]="[$]fptools_version_of_ghc[_all]" ], $#, [2], [dnl [$1]="[$]fptools_version_of_ghc[_major]" [$2]="[$]fptools_version_of_ghc[_minor]" ], $#, [3], [dnl [$1]="[$]fptools_version_of_ghc[_major]" [$2]="[$]fptools_version_of_ghc[_minor]" [$3]="[$]fptools_version_of_ghc[_pl]" ], $#, [4], [dnl [$1]="[$]fptools_version_of_ghc[_all]" [$2]="[$]fptools_version_of_ghc[_major]" [$3]="[$]fptools_version_of_ghc[_minor]" [$4]="[$]fptools_version_of_ghc[_pl]" ]) ]) ])dnl # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) # --------------------------------------------------------------------------------- # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the # additional flexibility of specifying the PROLOGUE and BODY. AC_DEFUN([FP_CHECK_FUNC], [AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl AC_CACHE_CHECK([for $1], fp_func, [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])], [AS_VAR_SET(fp_func, yes)], [AS_VAR_SET(fp_func, no)])]) AS_IF([test AS_VAR_GET(fp_func) = yes], [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1], [Define to 1 if you have the `]$1[' function.]) $4], [$5])dnl AS_VAR_POPDEF([fp_func])dnl ])# FP_CHECK_FUNC # FP_PROG_GHC_PKG # ---------------- # Try to find a ghc-pkg matching the ghc mentioned in the environment variable # WithGhc. Sets the output variable GhcPkgCmd. AC_DEFUN([FP_PROG_GHC_PKG], [AC_CACHE_CHECK([for ghc-pkg matching $WithGhc], fp_cv_matching_ghc_pkg, [ # If we are told to use ghc-stage2, then we're using an in-tree # compiler. In this case, we just want ghc-pkg, not ghc-pkg-stage2, # so we sed off -stage[0-9]$. However, if we are told to use # ghc-6.12.1 then we want to use ghc-pkg-6.12.1, so we keep any # other suffix. fp_ghc_pkg_guess=`echo "$WithGhc" | sed -e 's/-stage@<:@0-9@:>@$//' -e 's,ghc\(@<:@^/\\@:>@*\)$,ghc-pkg\1,'` if "$fp_ghc_pkg_guess" list > /dev/null 2>&1; then fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess else AC_MSG_ERROR([Cannot find matching ghc-pkg]) fi]) GhcPkgCmd=$fp_cv_matching_ghc_pkg AC_SUBST([GhcPkgCmd]) ])# FP_PROG_GHC_PKG # FP_GCC_EXTRA_FLAGS # ------------------ # Determine which extra flags we need to pass gcc when we invoke it # to compile .hc code. # # -fwrapv is needed for gcc to emit well-behaved code in the presence of # integer wrap around. (#952) # AC_DEFUN([FP_GCC_EXTRA_FLAGS], [AC_REQUIRE([FP_GCC_VERSION]) AC_CACHE_CHECK([for extra options to pass gcc when compiling via C], [fp_cv_gcc_extra_opts], [fp_cv_gcc_extra_opts= FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [3.4], [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fwrapv"], []) FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [4.0], [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-builtin"], []) ]) AC_SUBST([GccExtraViaCOpts],$fp_cv_gcc_extra_opts) ]) # FP_SETUP_PROJECT_VERSION # --------------------- AC_DEFUN([FP_SETUP_PROJECT_VERSION], [ if test "$RELEASE" = "NO"; then AC_MSG_CHECKING([for GHC version date]) if test -f VERSION_DATE; then PACKAGE_VERSION=${PACKAGE_VERSION}.`cat VERSION_DATE` AC_MSG_RESULT(given $PACKAGE_VERSION) elif test -e .git; then changequote(, )dnl ver_posixtime=`git log -1 --pretty=format:%ct` ver_date=`perl -MPOSIX -e "print strftime('%Y%m%d', gmtime($ver_posixtime));"` if echo $ver_date | grep '^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$' 2>&1 >/dev/null; then true; else changequote([, ])dnl AC_MSG_ERROR([failed to detect version date: check that git and perl are in your path]) fi PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date AC_MSG_RESULT(inferred $PACKAGE_VERSION) elif test -f VERSION; then PACKAGE_VERSION=`cat VERSION` AC_MSG_RESULT(given $PACKAGE_VERSION) else AC_MSG_WARN([cannot determine snapshot version: no .git directory and no VERSION file]) dnl We'd really rather this case didn't happen, but it might dnl do (in particular, people using lndir trees may find that dnl the build system can't find any other date). If it does dnl happen, then we use the current date. dnl This way we get some idea about how recent a build is. dnl It also means that packages built for 2 different builds dnl will probably use different version numbers, so things are dnl less likely to go wrong. PACKAGE_VERSION=${PACKAGE_VERSION}.`date +%Y%m%d` fi fi AC_MSG_CHECKING([for GHC Git commit id]) if test -e .git; then git_commit_id=`git rev-parse HEAD` if test -n "$git_commit_id" 2>&1 >/dev/null; then true; else AC_MSG_ERROR([failed to detect revision: check that git is in your path]) fi PACKAGE_GIT_COMMIT_ID=$git_commit_id AC_MSG_RESULT(inferred $PACKAGE_GIT_COMMIT_ID) elif test -f GIT_COMMIT_ID; then PACKAGE_GIT_COMMIT_ID=`cat GIT_COMMIT_ID` AC_MSG_RESULT(given $PACKAGE_GIT_COMMIT_ID) else AC_MSG_WARN([cannot determine snapshot revision: no .git directory and no 'GIT_COMMIT_ID' file]) PACKAGE_GIT_COMMIT_ID="0000000000000000000000000000000000000000" fi # Some renamings AC_SUBST([ProjectName], [$PACKAGE_NAME]) AC_SUBST([ProjectVersion], [$PACKAGE_VERSION]) AC_SUBST([ProjectGitCommitId], [$PACKAGE_GIT_COMMIT_ID]) # Split PACKAGE_VERSION into (possibly empty) parts VERSION_MAJOR=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/` VERSION_TMP=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/` VERSION_MINOR=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/` ProjectPatchLevel=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/` # Calculate project version as an integer, using 2 digits for minor version case $VERSION_MINOR in ?) ProjectVersionInt=${VERSION_MAJOR}0${VERSION_MINOR} ;; ??) ProjectVersionInt=${VERSION_MAJOR}${VERSION_MINOR} ;; *) AC_MSG_ERROR([bad minor version in $PACKAGE_VERSION]) ;; esac AC_SUBST([ProjectVersionInt]) # The project patchlevel is zero unless stated otherwise test -z "$ProjectPatchLevel" && ProjectPatchLevel=0 # Save split version of ProjectPatchLevel ProjectPatchLevel1=`echo $ProjectPatchLevel | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1/'` ProjectPatchLevel2=`echo $ProjectPatchLevel | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3/'` AC_SUBST([ProjectPatchLevel1]) AC_SUBST([ProjectPatchLevel2]) # Remove dots from the patch level; this allows us to have versions like 6.4.1.20050508 ProjectPatchLevel=`echo $ProjectPatchLevel | sed 's/\.//'` AC_SUBST([ProjectPatchLevel]) # The version of the GHC package changes every day, since the # patchlevel is the current date. We don't want to force # recompilation of the entire compiler when this happens, so for # GHC HEAD we omit the patchlevel from the package version number. # # The ProjectPatchLevel1 > 20000000 iff GHC HEAD. If it's for a stable # release like 7.10.1 or for a release candidate such as 7.10.1.20141224 # then we don't omit the patchlevel components. ProjectVersionMunged="$ProjectVersion" if test "$ProjectPatchLevel1" -gt 20000000; then ProjectVersionMunged="${VERSION_MAJOR}.${VERSION_MINOR}" fi AC_SUBST([ProjectVersionMunged]) ])# FP_SETUP_PROJECT_VERSION # Check for a working timer_create(). We need a pretty detailed check # here, because there exist partially-working implementations of # timer_create() in certain versions of Linux (see bug #1933). # AC_DEFUN([FP_CHECK_TIMER_CREATE],[ AC_CHECK_FUNC([timer_create],[HAVE_timer_create=yes],[HAVE_timer_create=no]) if test "$HAVE_timer_create" = "yes" then if test "$cross_compiling" = "yes" then # We can't test timer_create when we're cross-compiling, so we # optimistiaclly assume that it actually works properly. 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AC_ARG_WITH([iconv-includes], [AC_HELP_STRING([--with-iconv-includes], [directory containing iconv.h])], [ICONV_INCLUDE_DIRS=$withval]) AC_ARG_WITH([iconv-libraries], [AC_HELP_STRING([--with-iconv-libraries], [directory containing iconv library])], [ICONV_LIB_DIRS=$withval]) AC_SUBST(ICONV_INCLUDE_DIRS) AC_SUBST(ICONV_LIB_DIRS) ])# FP_ICONV # FP_GMP # ------------- AC_DEFUN([FP_GMP], [ dnl-------------------------------------------------------------------- dnl * Deal with arguments telling us gmp is somewhere odd dnl-------------------------------------------------------------------- AC_ARG_WITH([gmp-includes], [AC_HELP_STRING([--with-gmp-includes], [directory containing gmp.h])], [GMP_INCLUDE_DIRS=$withval]) AC_ARG_WITH([gmp-libraries], [AC_HELP_STRING([--with-gmp-libraries], [directory containing gmp library])], [GMP_LIB_DIRS=$withval]) AC_ARG_WITH([intree-gmp], [AC_HELP_STRING([--with-intree-gmp], [force using the in-tree GMP])], [GMP_FORCE_INTREE=YES], [GMP_FORCE_INTREE=NO]) AC_ARG_WITH([gmp-framework-preferred], [AC_HELP_STRING([--with-gmp-framework-preferred], [on OSX, prefer the GMP framework to the gmp lib])], [GMP_PREFER_FRAMEWORK=YES], [GMP_PREFER_FRAMEWORK=NO]) AC_SUBST(GMP_INCLUDE_DIRS) AC_SUBST(GMP_LIB_DIRS) AC_SUBST(GMP_FORCE_INTREE) AC_SUBST(GMP_PREFER_FRAMEWORK) ])# FP_GMP # FP_CURSES # ------------- AC_DEFUN([FP_CURSES], [ dnl-------------------------------------------------------------------- dnl * Deal with arguments telling us curses is somewhere odd dnl-------------------------------------------------------------------- AC_ARG_WITH([curses-libraries], [AC_HELP_STRING([--with-curses-libraries], [directory containing curses libraries])], [CURSES_LIB_DIRS=$withval]) AC_SUBST(CURSES_INCLUDE_DIRS) AC_SUBST(CURSES_LIB_DIRS) ])# FP_CURSES # -------------------------------------------------------------- # Calculate absolute path to build tree # -------------------------------------------------------------- AC_DEFUN([FP_FIND_ROOT],[ AC_MSG_CHECKING(for path to top of build tree) if test "$windows" = YES then dnl Make sure this is a c:/foo/bar (mixed) style path. Some parts of dnl the build system might depend on it (such as the sed expression dnl `"s|$(TOP)/||i"` in addCFileDeps in rules/build-dependencies.mk). hardtop=$(cygpath -m "$(pwd)") else hardtop=$(pwd) fi dnl Remove common automounter nonsense hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|'` if ! test -d "$hardtop"; then AC_MSG_ERROR([cannot determine current directory]) fi dnl We don't support building in directories with spaces. case "$hardtop" in *' '*) AC_MSG_ERROR([ The build system does not support building in a directory containing space characters. Suggestion: move the build tree somewhere else.]) ;; esac AC_SUBST(hardtop) AC_MSG_RESULT($hardtop) ]) # GHC_CONVERT_CPU(cpu, target_var) # -------------------------------- # converts cpu from gnu to ghc naming, and assigns the result to $target_var AC_DEFUN([GHC_CONVERT_CPU],[ case "$1" in aarch64*) $2="aarch64" ;; alpha*) $2="alpha" ;; arm*) $2="arm" ;; hppa1.1*) $2="hppa1_1" ;; hppa*) $2="hppa" ;; i386|i486|i586|i686) $2="i386" ;; ia64) $2="ia64" ;; m68k*) $2="m68k" ;; mipseb*) $2="mipseb" ;; mipsel*) $2="mipsel" ;; mips*) $2="mips" ;; nios2) $2="nios2" ;; powerpc64le*) $2="powerpc64le" ;; powerpc64*) $2="powerpc64" ;; powerpc*) $2="powerpc" ;; riscv64*) $2="riscv64" ;; riscv|riscv32*) $2="riscv32" ;; rs6000) $2="rs6000" ;; s390x*) $2="s390x" ;; s390*) $2="s390" ;; sh4) $2="sh4" ;; sparc64*) $2="sparc64" ;; sparc*) $2="sparc" ;; vax) $2="vax" ;; x86_64|amd64) $2="x86_64" ;; *) echo "Unknown CPU $1" exit 1 ;; esac ]) # GHC_LLVM_TARGET(target_cpu, target_vendor, target_os, llvm_target_var) # -------------------------------- # converts the canonicalized target into someting llvm can understand AC_DEFUN([GHC_LLVM_TARGET], [ case "$2-$3" in *-freebsd*-gnueabihf) llvm_target_vendor="unknown" llvm_target_os="freebsd-gnueabihf" ;; hardfloat-*eabi) llvm_target_vendor="unknown" llvm_target_os="$3""hf" ;; *-mingw32|*-mingw64|*-msys) llvm_target_vendor="unknown" llvm_target_os="windows" ;; # retain any android and gnueabi linux flavours # for the LLVM Target. Otherwise these would be # turned into just `-linux` and fail to be found # in the `llvm-targets` file. *-android*|*-gnueabi*) GHC_CONVERT_VENDOR([$2],[llvm_target_vendor]) llvm_target_os="$3" ;; *) GHC_CONVERT_VENDOR([$2],[llvm_target_vendor]) GHC_CONVERT_OS([$3],[$1],[llvm_target_os]) ;; esac $4="$1-$llvm_target_vendor-$llvm_target_os" ]) # GHC_CONVERT_VENDOR(vendor, target_var) # -------------------------------- # converts vendor from gnu to ghc naming, and assigns the result to $target_var AC_DEFUN([GHC_CONVERT_VENDOR],[ case "$1" in pc|gentoo|w64) # like i686-pc-linux-gnu, i686-gentoo-freebsd8, x86_64-w64-mingw32 $2="unknown" ;; softfloat) # like armv5tel-softfloat-linux-gnueabi $2="unknown" ;; hardfloat) # like armv7a-hardfloat-linux-gnueabi $2="unknown" ;; *) #pass thru by default $2="$1" ;; esac ]) # GHC_CONVERT_OS(os, converted_cpu, target_var) # -------------------------------- # converts os from gnu to ghc naming, and assigns the result to $target_var AC_DEFUN([GHC_CONVERT_OS],[ case "$1" in gnu*) # e.g. i686-unknown-gnu0.9 $3="gnu" ;; # watchos and tvos are ios variants as of May 2017. ios|watchos|tvos) $3="ios" ;; linux-android*) $3="linux-android" ;; linux-*|linux) $3="linux" ;; openbsd*) $3="openbsd" ;; # As far as I'm aware, none of these have relevant variants freebsd|netbsd|dragonfly|hpux|linuxaout|kfreebsdgnu|freebsd2|mingw32|darwin|nextstep2|nextstep3|sunos4|ultrix|haiku) $3="$1" ;; msys) AC_MSG_ERROR([Building GHC using the msys toolchain is not supported; please use mingw instead. Perhaps you need to set 'MSYSTEM=MINGW64 or MINGW32?']) ;; aix*) # e.g. powerpc-ibm-aix7.1.3.0 $3="aix" ;; darwin*) # e.g. aarch64-apple-darwin14 $3="darwin" ;; solaris2*) $3="solaris2" ;; freebsd*) # like i686-gentoo-freebsd7 # i686-gentoo-freebsd8 # i686-gentoo-freebsd8.2 $3="freebsd" ;; nto-qnx*) $3="nto-qnx" ;; *) echo "Unknown OS $1" exit 1 ;; esac ]) # BOOTSTRAPPING_GHC_INFO_FIELD # -------------------------------- # Set the variable $1 to the value of the ghc --info field $2. AC_DEFUN([BOOTSTRAPPING_GHC_INFO_FIELD],[ $1=`"$WithGhc" --info | grep "^ ,(\"$2\"," | sed -e 's/.*","//' -e 's/")$//'` tmp=${$1#\$topdir/} if test "${$1}" != "$tmp" then topdir=`"$WithGhc" --print-libdir | sed 's#\\\\#/#g'` $1="$topdir/$tmp" fi AC_SUBST($1) ]) # LIBRARY_VERSION(lib, [dir]) # -------------------------------- # Gets the version number of a library. # If $1 is ghc-prim, then we define LIBRARY_ghc_prim_VERSION as 1.2.3 # $2 points to the directory under libraries/ AC_DEFUN([LIBRARY_VERSION],[ dir=m4_default([$2],[$1]) LIBRARY_[]translit([$1], [-], [_])[]_VERSION=`grep -i "^version:" libraries/${dir}/$1.cabal | sed "s/.* //"` AC_SUBST(LIBRARY_[]translit([$1], [-], [_])[]_VERSION) ]) # XCODE_VERSION() # -------------------------------- # Gets the version number of XCode, if on a Mac AC_DEFUN([XCODE_VERSION],[ if test "$TargetVendor_CPP" = "apple" then AC_MSG_CHECKING(XCode version) XCodeVersion=`xcodebuild -version | grep Xcode | sed "s/Xcode //"` # Old XCode versions don't actually give the XCode version if test "$XCodeVersion" = "" then AC_MSG_RESULT(not found (too old?)) 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AC_CHECK_TOOLS([$1], [$2-$3 $2], [:]) if test "$$1" != ":"; then AC_MSG_CHECKING([$$1 is version $3]) if test `$$1 --version | grep -c "version $3"` -gt 0 ; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) $1="" fi else $1="" fi ]) # CHECK_LD_COPY_BUG() # ------------------- # Check for binutils bug #16177 present in some versions of the bfd ld # implementation affecting ARM relocations. # https://sourceware.org/bugzilla/show_bug.cgi?id=16177 # # $1 = the platform # AC_DEFUN([CHECK_LD_COPY_BUG],[ case $1 in arm*linux*) AC_CHECK_TARGET_TOOL([READELF], [readelf]) AC_CHECK_TARGET_TOOL([AS], [as]) AC_MSG_CHECKING([for ld bug 16177]) cat >actest.s <<-EOF .globl _start .p2align 4 _start: bkpt .data .globl data_object object_reference: .long data_object .size object_reference, 4 EOF cat >aclib.s <<-EOF .data .globl data_object .type data_object, %object .size data_object, 4 data_object: .long 123 EOF $AS -o aclib.o aclib.s $LD -shared -o aclib.so aclib.o $AS -o actest.o actest.s $LD -o actest actest.o aclib.so if $READELF -r actest | grep R_ARM_COPY > /dev/null; then AC_MSG_RESULT([affected]) AC_MSG_ERROR( [Your linker is affected by binutils #16177, which critically breaks linkage of GHC objects. 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HS_CPP_CMD=$CC SOLARIS_GCC_CPP_BROKEN=NO SOLARIS_FOUND_GOOD_CPP=NO case $host in i386-*-solaris2) GCC_MAJOR_MINOR=`$CC --version|grep "gcc (GCC)"|cut -d ' ' -f 3-3|cut -d '.' -f 1-2` if test "$GCC_MAJOR_MINOR" != "3.4"; then # this is not 3.4.x release so with broken CPP SOLARIS_GCC_CPP_BROKEN=YES fi ;; esac if test "$SOLARIS_GCC_CPP_BROKEN" = "YES"; then # let's try to find if GNU C 3.4.x is installed if test -x /usr/sfw/bin/gcc; then # something executable is in expected path so let's # see if it's really GNU C NEW_GCC_MAJOR_MINOR=`/usr/sfw/bin/gcc --version|grep "gcc (GCC)"|cut -d ' ' -f 3-3|cut -d '.' -f 1-2` if test "$NEW_GCC_MAJOR_MINOR" = "3.4"; then # this is GNU C 3.4.x which provides non-broken CPP on Solaris # let's use it as CPP then. HS_CPP_CMD=/usr/sfw/bin/gcc SOLARIS_FOUND_GOOD_CPP=YES fi fi if test "$SOLARIS_FOUND_GOOD_CPP" = "NO"; then AC_MSG_WARN([Your GNU C provides broken CPP and you do not have GNU C 3.4.x installed.]) AC_MSG_WARN([Please install GNU C 3.4.x to solve this issue. It will be used as CPP only.]) fi fi ] ) dnl ** what cpp flags to use? dnl ----------------------------------------------------------- AC_ARG_WITH(hs-cpp-flags, [AC_HELP_STRING([--with-hs-cpp-flags=ARG], [Flags to the (C) preprocessor for Haskell files [default=autodetect]])], [ if test "$HostOS" = "mingw32" then AC_MSG_WARN([Request to use $withval will be ignored]) else HS_CPP_ARGS=$withval fi ], [ $HS_CPP_CMD -x c /dev/null -dM -E > conftest.txt 2>&1 if grep "__clang__" conftest.txt >/dev/null 2>&1; then HS_CPP_ARGS="-E -undef -traditional -Wno-invalid-pp-token -Wno-unicode -Wno-trigraphs" else $HS_CPP_CMD -v > conftest.txt 2>&1 if grep "gcc" conftest.txt >/dev/null 2>&1; then HS_CPP_ARGS="-E -undef -traditional" else $HS_CPP_CMD --version > conftest.txt 2>&1 if grep "cpphs" conftest.txt >/dev/null 2>&1; then HS_CPP_ARGS="--cpp -traditional" else AC_MSG_WARN([configure can't recognize your CPP program, you may need to set --with-hs-cpp-flags=FLAGS explicitly]) HS_CPP_ARGS="" fi fi fi ] ) $1=$HS_CPP_CMD $2=$HS_CPP_ARGS ]) # FP_BFD_SUPPORT() # ---------------------- # whether to use libbfd for debugging RTS AC_DEFUN([FP_BFD_SUPPORT], [ AC_SUBST([CabalHaveLibbfd], [False]) AC_ARG_ENABLE(bfd-debug, [AC_HELP_STRING([--enable-bfd-debug], [Enable symbol resolution for -debug rts ('+RTS -Di') via binutils' libbfd [default=no]])], [ # don't pollute general LIBS environment save_LIBS="$LIBS" AC_CHECK_HEADERS([bfd.h]) dnl ** check whether this machine has BFD and libiberty installed (used for debugging) dnl the order of these tests matters: bfd needs libiberty AC_CHECK_LIB(iberty, xmalloc) dnl 'bfd_init' is a rare non-macro in libbfd AC_CHECK_LIB(bfd, bfd_init) AC_TRY_LINK([#include ], [ /* mimic our rts/Printer.c */ bfd* abfd; const char * name; char **matching; name = "some.executable"; bfd_init(); abfd = bfd_openr(name, "default"); bfd_check_format_matches (abfd, bfd_object, &matching); { long storage_needed; storage_needed = bfd_get_symtab_upper_bound (abfd); } { asymbol **symbol_table; long number_of_symbols; symbol_info info; number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table); bfd_get_symbol_info(abfd,symbol_table[0],&info); } ], [AC_SUBST([CabalHaveLibbfd], [True])],dnl bfd seems to work [AC_MSG_ERROR([can't use 'bfd' library])]) LIBS="$save_LIBS" ] ) ]) # FP_CC_LINKER_FLAG_TRY() # -------------------- # Try a particular linker to see whether we can use it. In particular, determine # whether we can convince gcc to use it via a -fuse-ld=... flag. # # $1 = the name of the linker to try # $2 = the variable to set with the appropriate GHC flag if the linker is # found to be usable AC_DEFUN([FP_CC_LINKER_FLAG_TRY], [ AC_MSG_CHECKING([whether C compiler supports -fuse-ld=$1]) echo 'int main(void) {return 0;}' > conftest.c if $CC -o conftest.o -fuse-ld=$1 conftest.c > /dev/null 2>&1 then $2="-fuse-ld=$1" AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) fi rm -f conftest.c conftest.o ]) # FIND_LD # --------- # Find the version of `ld` to use and figure out how to get gcc to use it for # linking (if --enable-ld-override is enabled). This is used in both in the top # level configure.ac and in distrib/configure.ac.in. # # $1 = the platform # $2 = the variable to set with GHC options to configure gcc to use the chosen linker # AC_DEFUN([FIND_LD],[ AC_ARG_ENABLE(ld-override, [AC_HELP_STRING([--disable-ld-override], [Prevent GHC from overriding the default linker used by gcc. If ld-override is enabled GHC will try to tell gcc to use whichever linker is selected by the LD environment variable. [default=override enabled]])], [], [enable_ld_override=yes]) find_ld() { # Make sure the user didn't specify LD manually. if test "z$LD" != "z"; then AC_CHECK_TARGET_TOOL([LD], [ld]) LD_NO_GOLD=$LD return fi # Manually iterate over possible names since we want to ensure that, e.g., # if ld.lld is installed but gcc doesn't support -fuse-ld=lld, that we # then still try ld.gold and -fuse-ld=gold. for possible_ld in ld.lld ld.gold ld; do TmpLd="" # In case the user set LD AC_CHECK_TARGET_TOOL([TmpLd], [$possible_ld]) if test "x$TmpLd" = "x"; then continue; fi out=`$TmpLd --version` LD_NO_GOLD=$TmpLd case $out in "GNU ld"*) FP_CC_LINKER_FLAG_TRY(bfd, $2) ;; "GNU gold"*) FP_CC_LINKER_FLAG_TRY(gold, $2) if test "$cross_compiling" = "yes"; then AC_MSG_NOTICE([Using ld.gold and assuming that it is not affected by binutils issue 22266]); else LD_NO_GOLD=ld; fi ;; "LLD"*) FP_CC_LINKER_FLAG_TRY(lld, $2) ;; *) AC_MSG_NOTICE([unknown linker version $out]) ;; esac if test "z$$2" = "z"; then AC_MSG_NOTICE([unable to convince '$CC' to use linker '$TmpLd']) # a terrible hack to prevent autoconf from caching the previous # AC_CHECK_TARGET_TOOL result since next time we'll be looking # for another ld variant. $as_unset ac_cv_prog_ac_ct_TmpLd else LD="$TmpLd" return fi done # Fallback AC_CHECK_TARGET_TOOL([LD], [ld]) # This isn't entirely safe since $LD may have been discovered to be # ld.gold, but what else can we do? if test "x$LD_NO_GOLD" = "x"; then LD_NO_GOLD=$LD; fi } if test "x$enable_ld_override" = "xyes"; then find_ld else AC_CHECK_TARGET_TOOL([LD], [ld]) if test "x$LD_NO_GOLD" = "x"; then LD_NO_GOLD=$LD; fi fi CHECK_LD_COPY_BUG([$1]) ]) # LocalWords: fi