diff options
Diffstat (limited to 'libgfortran/configure.ac')
| -rw-r--r-- | libgfortran/configure.ac | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac index e930123955..35a8b39588 100644 --- a/libgfortran/configure.ac +++ b/libgfortran/configure.ac @@ -139,12 +139,13 @@ AM_PROG_CC_C_O # Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC. if test "x$GCC" = "xyes"; then AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring" - ## We like to use C99 routines when available. This makes sure that + ## We like to use C11 and C99 routines when available. This makes + ## sure that ## __STDC_VERSION__ is set such that libc includes make them available. - AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings" + AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-function-declaration -Werror=vla" ## Compile the following tests with the same system header contents ## that we'll encounter when compiling our own source files. - CFLAGS="-std=gnu99 $CFLAGS" + CFLAGS="-std=gnu11 $CFLAGS" fi AC_SUBST(AM_FCFLAGS) AC_SUBST(AM_CFLAGS) @@ -188,6 +189,18 @@ AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno]) AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu]) AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun]) +# For GPU offloading, not everything in libfortran can be supported. +# Currently, the only target that has this problem is nvptx. The +# following is a (partial) list of features that are unsupportable on +# this particular target: +# * Constructors +# * alloca +# * C library support for I/O, with printf as the one notable exception +# * C library support for other features such as signal, environment +# variables, time functions + +AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx]) + # Figure out whether the compiler supports "-ffunction-sections -fdata-sections", # similarly to how libstdc++ does it ac_test_CFLAGS="${CFLAGS+set}" @@ -254,7 +267,7 @@ AC_CHECK_TYPES([ptrdiff_t]) # check header files (we assume C89 is available, so don't check for that) AC_CHECK_HEADERS_ONCE(unistd.h sys/time.h sys/times.h sys/resource.h \ sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h fenv.h fptrap.h \ -fpxcp.h pwd.h complex.h) +fpxcp.h pwd.h complex.h xlocale.h) GCC_HEADER_STDINT(gstdint.h) @@ -272,6 +285,8 @@ if test "x${with_newlib}" = "xyes"; then AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.]) AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.]) AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.]) + AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.]) + AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.]) AC_DEFINE(HAVE_STRTOK_R, 1, [Define if you have strtok_r.]) # At some point, we should differentiate between architectures @@ -287,7 +302,8 @@ else strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \ getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \ readlink getgid getpid getppid getuid geteuid umask getegid \ - secure_getenv __secure_getenv mkostemp strtok_r) + secure_getenv __secure_getenv mkostemp strnlen strndup strtok_r newlocale \ + freelocale uselocale strerror_l) fi # Check strerror_r, cannot be above as versions with two and three arguments exist @@ -511,7 +527,7 @@ AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENA # test is copied from libgomp, and modified to not link in -lrt as # libgfortran calls clock_gettime via a weak reference if it's found # in librt. -if test $ac_cv_func_clock_gettime = no; then +if test "$ac_cv_func_clock_gettime" = no; then AC_CHECK_LIB(rt, clock_gettime, [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1, [Define to 1 if you have the `clock_gettime' function in librt.])]) @@ -519,8 +535,22 @@ fi # Check for SysV fpsetmask LIBGFOR_CHECK_FPSETMASK -AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[#include <ieeefp.h>]]) -AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[#include <ieeefp.h>]]) +AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[ +#ifdef HAVE_IEEEFP_H +#include <ieeefp.h> +#endif +#include <math.h> +]]) +AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[ +#ifdef HAVE_IEEEFP_H +#include <ieeefp.h> +#endif +#include <math.h> +]]) + +# Check whether we have fpsetsticky or fpresetsticky +AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])]) +AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])]) # Check for AIX fp_trap and fp_enable AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])]) @@ -531,9 +561,14 @@ AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp # build chain. . ${srcdir}/configure.host AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h]) +AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}]) FPU_HOST_HEADER=config/${fpu_host}.h AC_SUBST(FPU_HOST_HEADER) +# Whether we will build the IEEE modules +AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes]) +AC_SUBST(IEEE_SUPPORT) + # Some targets require additional compiler options for IEEE compatibility. IEEE_FLAGS="${ieee_flags}" AC_SUBST(IEEE_FLAGS) |