diff options
Diffstat (limited to 'newlib/configure.in')
-rw-r--r-- | newlib/configure.in | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/newlib/configure.in b/newlib/configure.in new file mode 100644 index 00000000000..e2e4e18a839 --- /dev/null +++ b/newlib/configure.in @@ -0,0 +1,403 @@ +dnl This is the newlib configure.in file. +dnl Process this file with autoconf to produce a configure script. + +AC_PREREQ(2.13) +AC_INIT(libc) +AM_CONFIG_HEADER(newlib.h:newlib.hin) + +dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake. +AC_CONFIG_AUX_DIR(..) + +dnl Support --enable-newlib-io-pos-args +dnl This option is actually read in libc/configure.in. It is repeated +dnl here so that it shows up in the help text. +AC_ARG_ENABLE(newlib-io-pos-args, +[ --enable-newlib-io-pos-args enable printf-family positional arg support], +[case "${enableval}" in + yes) newlib_io_pos_args=yes ;; + no) newlib_io_pos_args=no ;; + *) AC_MSG_ERROR(bad value ${enableval} for newlib-io-pos-args option) ;; + esac], [newlib_io_pos_args=])dnl + +dnl Support --enable-newlib-io-long-long +AC_ARG_ENABLE(newlib-io-long-long, +[ --enable-newlib-io-long-long enable long long type support in IO functions like printf/scanf], +[case "${enableval}" in + yes) newlib_io_long_long=yes;; + no) newlib_io_long_long=no ;; + *) AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-long option) ;; + esac], [newlib_io_long_long=])dnl + +dnl Support --enable-newlib-io-long-double +AC_ARG_ENABLE(newlib-io-long-double, +[ --enable-newlib-io-long-double enable long double type support in IO functions printf/scanf], +[case "${enableval}" in + yes) newlib_io_long_double=yes;; + no) newlib_io_long_double=no ;; + *) AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-double option) ;; + esac], [newlib_io_long_double=])dnl + +dnl If multibyte support is enabled, iconv should be enabled too +dnl Support --enable-newlib-mb +AC_ARG_ENABLE(newlib-mb, +[ --enable-newlib-mb enable multibyte support], +[case "${enableval}" in + yes) newlib_mb=yes;; + no) newlib_mb=no ;; + *) AC_MSG_ERROR(bad value ${enableval} for newlib-mb option) ;; + esac], [newlib_mb=])dnl + +dnl Support --enable-newlib-iconv-encodings +AC_ARG_ENABLE(newlib-iconv-encodings, +[ --enable-newlib-iconv-encodings enable specific comma-separated list of bidirectional iconv encodings to be built-in], +[if test x${enableval} = x; then + AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-encodings option - use comma-separated encodings list) + fi + iconv_encodings=${enableval} + ], [iconv_encodings=])dnl + +dnl Support --enable-newlib-iconv-from-encodings +AC_ARG_ENABLE(newlib-iconv-from-encodings, +[ --enable-newlib-iconv-from-encodings enable specific comma-separated list of \"from\" iconv encodings to be built-in], +[if test x${enableval} = x; then + AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-from-encodings option - use comma-separated encodings list) + fi + iconv_from_encodings=${enableval} + ], [iconv_from_encodings=])dnl + +dnl Support --enable-newlib-iconv-to-encodings +AC_ARG_ENABLE(newlib-iconv-to-encodings, +[ --enable-newlib-iconv-to-encodings enable specific comma-separated list of \"to\" iconv encodings to be built-in], +[if test x${enableval} = x; then + AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-to-encodings option - use comma-separated encodings list) + fi + iconv_to_encodings=${enableval} + ], [iconv_to_encodings=])dnl + +dnl Support --enable-newlib-iconv-external-ccs +AC_ARG_ENABLE(newlib-iconv-external-ccs, +[ --enable-newlib-iconv-external-ccs enable capabilities to load external CCS files for iconv], +[if test "${newlib_iconv_external_ccs+set}" != set; then + case "${enableval}" in + yes) newlib_iconv_external_ccs=yes ;; + no) newlib_iconv_external_ccs=no ;; + *) AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-external-ccs option) ;; + esac + fi], [newlib_iconv_external_ccs=${newlib_iconv_external_ccs}])dnl + +dnl Support --disable-newlib-atexit-dynamic-alloc +AC_ARG_ENABLE(newlib-atexit-dynamic-alloc, +[ --disable-newlib-atexit-alloc disable dynamic allocation of atexit entries], +[if test "${newlib_atexit_dynamic_alloc+set}" != set; then + case "${enableval}" in + yes) newlib_atexit_dynamic_alloc=yes ;; + no) newlib_atexit_dynamic_alloc=no ;; + *) AC_MSG_ERROR(bad value ${enableval} for newlib-atexit-dynamic-alloc option) ;; + esac + fi], [newlib_atexit_dynamic_alloc=${newlib_atexit_dynamic_alloc}])dnl + +NEWLIB_CONFIGURE(.) + +dnl We have to enable libtool after NEWLIB_CONFIGURE because if we try and +dnl add it into NEWLIB_CONFIGURE, executable tests are made before the first +dnl line of the macro which fail because appropriate LDFLAGS are not set. +if test "${use_libtool}" = "yes"; then +AC_LIBTOOL_WIN32_DLL +AM_PROG_LIBTOOL +AC_PROG_AWK +fi + +AC_ARG_ENABLE(newlib_hw_fp, +[ --enable-newlib-hw-fp Turn on hardware floating point math], +[case "${enableval}" in + yes) newlib_hw_fp=true ;; + no) newlib_hw_fp=false ;; + *) AC_MSG_ERROR(bad value ${enableval} for --enable-newlib-hw-fp) ;; + esac],[newlib_hw_fp=false]) +AM_CONDITIONAL(NEWLIB_HW_FP, test x$newlib_hw_fp = xtrue) + +# These get added in the top-level configure.in, except in the case where +# newlib is being built natively. +LIBC_INCLUDE_GREP=`echo ${CC} | grep \/libc\/include` +abs_newlib_basedir=`cd ${newlib_basedir} && pwd` +if test -z "${LIBC_INCLUDE_GREP}"; then + CC_FOR_NEWLIB="${CC} -I$PWD/targ-include -I${abs_newlib_basedir}/libc/include" +else + CC_FOR_NEWLIB="${CC}" +fi +AC_SUBST(CC_FOR_NEWLIB) + +AC_CONFIG_SUBDIRS(libc) +AC_CONFIG_SUBDIRS(libm) + +if test -z "${with_multisubdir}"; then + AC_CONFIG_SUBDIRS(doc) + have_doc=yes +else + have_doc= +fi +AM_CONDITIONAL(HAVE_DOC, test x$have_doc = xyes) + +EXTRA_DIRS= +case $host in + i[[34567]]86-pc-linux-*) + AC_CONFIG_SUBDIRS(iconvdata) + EXTRA_DIRS=iconvdata + ;; +esac +AC_SUBST(EXTRA_DIRS) + +CRT0= +CRT0_DIR= +if test "x${have_crt0}" = "xyes"; then + CRT0=crt0.o + CRT0_DIR=libc/ +fi +AC_SUBST(CRT0) +AC_SUBST(CRT0_DIR) + +CRT1=${crt1} +CRT1_DIR= +if test -n "${crt1_dir}"; then + CRT1_DIR=${crt1_dir}/ +fi +AC_SUBST(CRT1) +AC_SUBST(CRT1_DIR) + +if test -n "${libm_machine_dir}"; then + LIBM_MACHINE_OBJECTLIST=libm/machine/${libm_machine_dir}/objectlist.awk.in +fi +AC_SUBST(LIBM_MACHINE_OBJECTLIST) + +if test -n "${machine_dir}"; then + MACHINE_OBJECTLIST=libc/machine/${machine_dir}/objectlist.awk.in +fi +AC_SUBST(MACHINE_OBJECTLIST) + +if test -n "${sys_dir}"; then + SYS_OBJECTLIST=libc/sys/${sys_dir}/objectlist.awk.in +fi +AC_SUBST(SYS_OBJECTLIST) + +if test "${have_sys_mach_dir}" = "yes"; then + SYS_MACH_OBJECTLIST=libc/sys/${sys_dir}/machine/${machine_dir}/objectlist.awk.in +fi +AC_SUBST(SYS_MACH_OBJECTLIST) + +if test -n "${posix_dir}"; then + POSIX_OBJECTLIST=libc/${posix_dir}/objectlist.awk.in +fi +AC_SUBST(POSIX_OBJECTLIST) + +if test -n "${signal_dir}"; then + SIGNAL_OBJECTLIST=libc/${signal_dir}/objectlist.awk.in +fi +AC_SUBST(SIGNAL_OBJECTLIST) + +if test -n "${syscall_dir}"; then + SYSCALL_OBJECTLIST=libc/${syscall_dir}/objectlist.awk.in +fi +AC_SUBST(SYSCALL_OBJECTLIST) + +if test -n "${unix_dir}"; then + UNIX_OBJECTLIST=libc/${unix_dir}/objectlist.awk.in +fi +AC_SUBST(UNIX_OBJECTLIST) + +if test -n "${stdio64_dir}"; then + STDIO64_OBJECTLIST=libc/${stdio64_dir}/objectlist.awk.in +fi +AC_SUBST(STDIO64_OBJECTLIST) + +# Put a plausible default for CC_FOR_BUILD in Makefile. +if test -z "$CC_FOR_BUILD"; then + CC_FOR_BUILD=gcc +fi +AC_SUBST(CC_FOR_BUILD) + +if test "${newlib_elix_level}" -gt "0"; then +AC_DEFINE_UNQUOTED(_ELIX_LEVEL,${newlib_elix_level}) +fi + +if test "${newlib_io_long_long}" = "yes"; then +AC_DEFINE_UNQUOTED(_WANT_IO_LONG_LONG) +fi + +if test "${newlib_io_long_double}" = "yes"; then +AC_DEFINE_UNQUOTED(_WANT_IO_LONG_DOUBLE) +fi + +if test "${newlib_io_pos_args}" = "yes"; then +AC_DEFINE_UNQUOTED(_WANT_IO_POS_ARGS) +fi + +if test "${newlib_mb}" = "yes"; then +AC_DEFINE_UNQUOTED(_MB_CAPABLE) +AC_DEFINE_UNQUOTED(_MB_LEN_MAX,8) +else +AC_DEFINE_UNQUOTED(_MB_LEN_MAX,1) +fi + +if test "${newlib_iconv_external_ccs}" = "yes"; then +AC_DEFINE_UNQUOTED(_ICONV_ENABLE_EXTERNAL_CCS) +fi + +AC_DEFINE_UNQUOTED(_NEWLIB_VERSION,"$VERSION") + +if test "${multilib}" = "yes"; then + multilib_arg="--enable-multilib" +else + multilib_arg= +fi + +if test "${newlib_iconv}" = "yes"; then +AC_DEFINE_UNQUOTED(_ICONV_ENABLED,1) +fi + +if test "x${newlib_iconv_external_ccs}" = "xyes"; then + if test "x${newlib_iconv}" = "x"; then + AC_MSG_ERROR(--enable-newlib-iconv-external-ccs option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.) + fi + AC_DEFINE_UNQUOTED(_ICONV_ENABLE_EXTERNAL_CCS,1) +fi + +if test "${newlib_atexit_dynamic_alloc}" = "yes"; then +AC_DEFINE_UNQUOTED(_ATEXIT_DYNAMIC_ALLOC) +fi + +dnl +dnl Parse --enable-newlib-iconv-encodings option argument +dnl + +if test "x${iconv_encodings}" != "x" \ + || test "x${iconv_to_encodings}" != "x" \ + || test "x${iconv_from_encodings}" != "x"; then + if test "x${newlib_iconv}" = "x"; then + AC_MSG_ERROR([--enable-newlib-iconv-encodings, --enable-newlib-iconv-from-encodings and --enable-newlib-iconv-to-encodings option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.]) + fi + + dnl Normalize encodings names and delete commas + iconv_encodings=`echo "${iconv_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'` + iconv_to_encodings=`echo "${iconv_to_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'` + iconv_from_encodings=`echo "${iconv_from_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'` + + dnl Get the list of available encodings excluding comments + dnl Join line with previous if the first character is whitespace + available_encodings=`cat "${srcdir}/libc/iconv/encoding.aliases" | sed -e '/^#.*/d'` + + dnl Check if required encodings are supported + dnl Convert aliases to names + + dnl iconv_encodings + iconv_encodings1="${iconv_encodings}" + iconv_encodings="" + for encoding in ${iconv_encodings1}; do + result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"` + if test $? != "0"; then + AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings) + fi + encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'` + iconv_encodings="${iconv_encodings} ${encoding1}" + done + dnl Enable appropriate option in newlib.h + for encoding in ${iconv_encodings}; do + opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` + AC_DEFINE_UNQUOTED($opt,1) + opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` + AC_DEFINE_UNQUOTED($opt,1) + done + + dnl iconv_to_encodings + iconv_encodings1="${iconv_to_encodings}" + iconv_to_encodings="" + for encoding in ${iconv_encodings1}; do + result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"` + if test $? != "0"; then + AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings) + fi + encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'` + iconv_to_encodings="${iconv_to_encodings} ${encoding1}" + done + dnl Enable appropriate option in newlib.h + for encoding in ${iconv_to_encodings}; do + opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` + AC_DEFINE_UNQUOTED($opt,1) + done + + dnl iconv_from_encodings + iconv_encodings1="${iconv_from_encodings}" + iconv_from_encodings="" + for encoding in ${iconv_encodings1}; do + result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"` + if test $? != "0"; then + AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings) + fi + encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'` + iconv_from_encodings="${iconv_from_encodings} ${encoding1}" + done + dnl Enable appropriate option in newlib.h + for encoding in ${iconv_from_encodings}; do + opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` + AC_DEFINE_UNQUOTED($opt,1) + done +fi; + +AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, + libc_cv_initfinit_array, [dnl +cat > conftest.c <<EOF +int _start (void) { return 0; } +int __start (void) { return 0; } +int foo (void) { return 1; } +int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; +EOF +if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c + -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD]) +then + if readelf -S conftest | grep -e INIT_ARRAY > /dev/null; then + libc_cv_initfinit_array=yes + else + libc_cv_initfinit_array=no + fi +else + libc_cv_initfinit_array=no +fi +rm -f conftest*]) +AC_SUBST(libc_cv_initfinit_array) +if test $libc_cv_initfinit_array = yes; then + AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY) +fi + +AC_CACHE_CHECK(for array aliasing support, + libc_cv_array_aliasing, [dnl +cat > conftest.c <<EOF +char x[3] = { 'a', 'b', 'c' }; +extern char y[2] __attribute__((alias ("x+1"))); +EOF +if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c conftest.c + 1>&AS_MESSAGE_LOG_FD]) +then + libc_cv_array_aliasing=yes +else + libc_cv_array_aliasing=no +fi +rm -f conftest*]) +AC_SUBST(libc_cv_array_aliasing) +if test $libc_cv_array_aliasing = yes; then + AC_DEFINE_UNQUOTED(_HAVE_ARRAY_ALIASING) +fi + +AC_OUTPUT(Makefile, +[if test -n "$CONFIG_FILES"; then + unset ac_file + . ${newlib_basedir}/../config-ml.in +fi], +srcdir=${srcdir} +host=${host} +target=${target} +with_multisubdir=${with_multisubdir} +ac_configure_args="${multilib_arg} ${ac_configure_args}" +CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} +newlib_basedir=${newlib_basedir} +CC="${CC}" +LDFLAGS="${LDFLAGS}" +) |