X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=libgfortran%2Facinclude.m4;h=33552871001e9e246b8c57fdba06548ec7e6e9c3;hp=4355d3a12fc87f6528eb4441de95df6ae02db531;hb=09c759aaf6da911aa1a44898d2b84121991bced9;hpb=1dc95e51b6a997cb9ed237f0ee1df56782c8a00e diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4 index 4355d3a12fc..33552871001 100644 --- a/libgfortran/acinclude.m4 +++ b/libgfortran/acinclude.m4 @@ -1,77 +1,21 @@ -dnl Check: -dnl * If we have gettimeofday; -dnl * If we have struct timezone for use in calling it; -dnl * If calling it with a timezone pointer actually works -- this is deemed -dnl obsolete or undefined on some systems which say you should use a null -dnl pointer -- and undefine HAVE_TIMEZONE if so; -dnl * Whether it only takes one arg. -AC_DEFUN([LIBGFOR_GETTIMEOFDAY], [ - AC_CHECK_FUNCS(gettimeofday) - if test "$ac_cv_func_gettimeofday" = yes; then - AC_CACHE_CHECK([for struct timezone], gfor_cv_struct_timezone, - [AC_TRY_COMPILE([#include ], - [struct timezone tz;], - gfor_cv_struct_timezone=yes, gfor_cv_struct_timezone=no)]) - if test $gfor_cv_struct_timezone = yes; then - dnl It may be that we can't call gettimeofday with a non-null pointer. - dnl In that case we'll lie about struct timezone. - AC_TRY_RUN([ -#ifdef TIME_WITH_SYS_TIME -#include -#include -#else -#ifdef HAVE_SYS_TIME_H -#include -#else -#include -#endif -#endif -main () -{ - struct timeval time; - struct timezone dummy; - if (gettimeofday (&time, &dummy)) - exit (1); - else - exit (0); -}], - [gfor_have_struct_timezone=yes], [gfor_have_struct_timezone=no], - [gfor_have_struct_timezone=yes]) - if test $gfor_have_struct_timezone = yes; then - AC_DEFINE(HAVE_TIMEZONE, 1, [Do we have struct timezone]) - fi - fi - AC_REQUIRE([AC_HEADER_TIME]) - AC_CACHE_CHECK([whether gettimeofday can accept two arguments], - emacs_cv_gettimeofday_two_arguments, - [AC_TRY_LINK([ -#ifdef TIME_WITH_SYS_TIME -#include -#include -#else -#ifdef HAVE_SYS_TIME_H -#include -#else -#include -#endif -#endif - ], - [ - struct timeval time; -#ifdef HAVE_TIMEZONE - struct timezone dummy; -#define DUMMY &dummy -#else -#define DUMMY NULL -#endif - gettimeofday (&time, DUMMY);], - emacs_cv_gettimeofday_two_arguments=yes, - emacs_cv_gettimeofday_two_arguments=no)]) - if test $emacs_cv_gettimeofday_two_arguments = no; then - AC_DEFINE(GETTIMEOFDAY_ONE_ARGUMENT, 1, - [Does gettimeofday take a single argument]) - fi - fi]) +m4_include(../config/acx.m4) +m4_include(../config/no-executables.m4) + +dnl Check that we have a working GNU Fortran compiler +AC_DEFUN([LIBGFOR_WORKING_GFORTRAN], [ +AC_MSG_CHECKING([whether the GNU Fortran compiler is working]) +AC_LANG_PUSH([Fortran]) +AC_COMPILE_IFELSE([[ + program foo + real, parameter :: bar = sin (12.34 / 2.5) + end program foo]], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_MSG_ERROR([GNU Fortran is not working; please report a bug in http://gcc.gnu.org/bugzilla, attaching $PWD/config.log]) + ]) +AC_LANG_POP([Fortran]) +]) + sinclude(../libtool.m4) dnl The lines below arrange for aclocal not to bring an installed @@ -83,37 +27,17 @@ AC_DEFUN([AC_LIBTOOL_DLOPEN]) AC_DEFUN([AC_PROG_LD]) ]) -dnl Check whether the target is ILP32. -AC_DEFUN([LIBGFOR_TARGET_ILP32], [ - AC_CACHE_CHECK([whether the target is ILP32], target_ilp32, [ - save_CFLAGS="$CFLAGS" - CFLAGS="-O2" - AC_TRY_LINK(,[ -if (sizeof(int) == 4 && sizeof(long) == 4 && sizeof(void *) == 4) - ; -else - undefined_function (); - ], - target_ilp32=yes, - target_ilp32=no) - CFLAGS="$save_CFLAGS"]) - if test $target_ilp32 = yes; then - AC_DEFINE(TARGET_ILP32, 1, - [Define to 1 if the target is ILP32.]) - fi - ]) - dnl Check whether the target supports hidden visibility. AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY], [ AC_CACHE_CHECK([whether the target supports hidden visibility], - have_attribute_visibility, [ + libgfor_cv_have_attribute_visibility, [ save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Werror" AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], - [], have_attribute_visibility=yes, - have_attribute_visibility=no) + [], libgfor_cv_have_attribute_visibility=yes, + libgfor_cv_have_attribute_visibility=no) CFLAGS="$save_CFLAGS"]) - if test $have_attribute_visibility = yes; then + if test $libgfor_cv_have_attribute_visibility = yes; then AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1, [Define to 1 if the target supports __attribute__((visibility(...))).]) fi]) @@ -121,14 +45,14 @@ AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY], [ dnl Check whether the target supports dllexport AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT], [ AC_CACHE_CHECK([whether the target supports dllexport], - have_attribute_dllexport, [ + libgfor_cv_have_attribute_dllexport, [ save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Werror" AC_TRY_COMPILE([void __attribute__((dllexport)) foo(void) { }], - [], have_attribute_dllexport=yes, - have_attribute_dllexport=no) + [], libgfor_cv_have_attribute_dllexport=yes, + libgfor_cv_have_attribute_dllexport=no) CFLAGS="$save_CFLAGS"]) - if test $have_attribute_dllexport = yes; then + if test $libgfor_cv_have_attribute_dllexport = yes; then AC_DEFINE(HAVE_ATTRIBUTE_DLLEXPORT, 1, [Define to 1 if the target supports __attribute__((dllexport)).]) fi]) @@ -136,23 +60,64 @@ AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT], [ dnl Check whether the target supports symbol aliases. AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_ALIAS], [ AC_CACHE_CHECK([whether the target supports symbol aliases], - have_attribute_alias, [ + libgfor_cv_have_attribute_alias, [ AC_TRY_LINK([ -#define ULP STR1(__USER_LABEL_PREFIX__) -#define STR1(x) STR2(x) -#define STR2(x) #x void foo(void) { } -extern void bar(void) __attribute__((alias(ULP "foo")));], - [bar();], have_attribute_alias=yes, have_attribute_alias=no)]) - if test $have_attribute_alias = yes; then +extern void bar(void) __attribute__((alias("foo")));], + [bar();], libgfor_cv_have_attribute_alias=yes, libgfor_cv_have_attribute_alias=no)]) + if test $libgfor_cv_have_attribute_alias = yes; then AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1, [Define to 1 if the target supports __attribute__((alias(...))).]) fi]) +dnl Check whether the target supports __sync_fetch_and_add. +AC_DEFUN([LIBGFOR_CHECK_SYNC_FETCH_AND_ADD], [ + AC_CACHE_CHECK([whether the target supports __sync_fetch_and_add], + libgfor_cv_have_sync_fetch_and_add, [ + AC_TRY_LINK([int foovar = 0;], [ +if (foovar <= 0) return __sync_fetch_and_add (&foovar, 1); +if (foovar > 10) return __sync_add_and_fetch (&foovar, -1);], + libgfor_cv_have_sync_fetch_and_add=yes, libgfor_cv_have_sync_fetch_and_add=no)]) + if test $libgfor_cv_have_sync_fetch_and_add = yes; then + AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD, 1, + [Define to 1 if the target supports __sync_fetch_and_add]) + fi]) + +dnl Check if threads are supported. +AC_DEFUN([LIBGFOR_CHECK_GTHR_DEFAULT], [ + AC_CACHE_CHECK([configured target thread model], + libgfor_cv_target_thread_file, [ +libgfor_cv_target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`]) + + if test $libgfor_cv_target_thread_file != single; then + AC_DEFINE(HAVE_GTHR_DEFAULT, 1, + [Define if the compiler has a thread header that is non single.]) + fi]) + +dnl Check for pragma weak. +AC_DEFUN([LIBGFOR_GTHREAD_WEAK], [ + AC_CACHE_CHECK([whether pragma weak works], + libgfor_cv_have_pragma_weak, [ + gfor_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -Wunknown-pragmas" + AC_TRY_COMPILE([void foo (void); +#pragma weak foo], [if (foo) foo ();], + libgfor_cv_have_pragma_weak=yes, libgfor_cv_have_pragma_weak=no)]) + if test $libgfor_cv_have_pragma_weak = yes; then + AC_DEFINE(SUPPORTS_WEAK, 1, + [Define to 1 if the target supports #pragma weak]) + fi + case "$host" in + *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* ) + AC_DEFINE(GTHREAD_USE_WEAK, 0, + [Define to 0 if the target shouldn't use #pragma weak]) + ;; + esac]) + dnl Check whether target can unlink a file still open. AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [ AC_CACHE_CHECK([whether the target can unlink an open file], - have_unlink_open_file, [ + libgfor_cv_have_unlink_open_file, [ AC_TRY_RUN([ #include #include @@ -175,11 +140,251 @@ int main () return 0; else return 1; -}], have_unlink_open_file=yes, have_unlink_open_file=no, [ +}], libgfor_cv_have_unlink_open_file=yes, libgfor_cv_have_unlink_open_file=no, [ case "${target}" in - *mingw*) have_unlink_open_file=no ;; - *) have_unlink_open_file=yes;; + *mingw*) libgfor_cv_have_unlink_open_file=no ;; + *) libgfor_cv_have_unlink_open_file=yes;; esac])]) -if test x"$have_unlink_open_file" = xyes; then +if test x"$libgfor_cv_have_unlink_open_file" = xyes; then AC_DEFINE(HAVE_UNLINK_OPEN_FILE, 1, [Define if target can unlink open files.]) fi]) + +dnl Check whether CRLF is the line terminator +AC_DEFUN([LIBGFOR_CHECK_CRLF], [ + AC_CACHE_CHECK([whether the target has CRLF as line terminator], + libgfor_cv_have_crlf, [ + AC_TRY_RUN([ +/* This test program should exit with status 0 if system uses a CRLF as + line terminator, and status 1 otherwise. + Since it is used to check for mingw systems, and should return 0 in any + other case, in case of a failure we will not use CRLF. */ +#include +#include +#include +#include + +int main () +{ +#ifndef O_BINARY + exit(1); +#else + int fd, bytes; + char buff[5]; + + fd = open ("foo", O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU); + if (fd < 0) + exit(1); + if (write (fd, "\n", 1) < 0) + perror ("write"); + + close (fd); + + if ((fd = open ("foo", O_RDONLY | O_BINARY, S_IRWXU)) < 0) + exit(1); + bytes = read (fd, buff, 5); + if (bytes == 2 && buff[0] == '\r' && buff[1] == '\n') + exit(0); + else + exit(1); +#endif +}], libgfor_cv_have_crlf=yes, libgfor_cv_have_crlf=no, [ +case "${target}" in + *mingw*) libgfor_cv_have_crlf=yes ;; + *) libgfor_cv_have_crlf=no;; +esac])]) +if test x"$libgfor_cv_have_crlf" = xyes; then + AC_DEFINE(HAVE_CRLF, 1, [Define if CRLF is line terminator.]) +fi]) + +dnl Check whether isfinite is broken. +dnl The most common problem is that it does not work on long doubles. +AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_ISFINITE], [ + AC_CACHE_CHECK([whether isfinite is broken], + libgfor_cv_have_broken_isfinite, [ + libgfor_check_for_broken_isfinite_save_LIBS=$LIBS + LIBS="$LIBS -lm" + AC_TRY_RUN([ +#include +#include +int main () +{ +#ifdef isfinite +#ifdef LDBL_MAX + if (!isfinite(LDBL_MAX)) return 1; +#endif +#ifdef DBL_MAX + if (!isfinite(DBL_MAX)) return 1; +#endif +#endif +return 0; +}], libgfor_cv_have_broken_isfinite=no, libgfor_cv_have_broken_isfinite=yes, [ +case "${target}" in + hppa*-*-hpux*) libgfor_cv_have_broken_isfinite=yes ;; + *) libgfor_cv_have_broken_isfinite=no ;; +esac])] + LIBS=$libgfor_check_for_broken_isfinite_save_LIBS) +if test x"$libgfor_cv_have_broken_isfinite" = xyes; then + AC_DEFINE(HAVE_BROKEN_ISFINITE, 1, [Define if isfinite is broken.]) +fi]) + +dnl Check whether isnan is broken. +dnl The most common problem is that it does not work on long doubles. +AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_ISNAN], [ + AC_CACHE_CHECK([whether isnan is broken], + libgfor_cv_have_broken_isnan, [ + libgfor_check_for_broken_isnan_save_LIBS=$LIBS + LIBS="$LIBS -lm" + AC_TRY_RUN([ +#include +#include +int main () +{ +#ifdef isnan +#ifdef LDBL_MAX + { + long double x; + x = __builtin_nanl (""); + if (!isnan(x)) return 1; + if (isnan(LDBL_MAX)) return 1; +#ifdef NAN + x = (long double) NAN; + if (!isnan(x)) return 1; +#endif + } +#endif +#ifdef DBL_MAX + { + double y; + y = __builtin_nan (""); + if (!isnan(y)) return 1; + if (isnan(DBL_MAX)) return 1; +#ifdef NAN + y = (double) NAN; + if (!isnan(y)) return 1; +#endif + } +#endif +#endif +return 0; +}], libgfor_cv_have_broken_isnan=no, libgfor_cv_have_broken_isnan=yes, [ +case "${target}" in + hppa*-*-hpux*) libgfor_cv_have_broken_isnan=yes ;; + *) libgfor_cv_have_broken_isnan=no ;; +esac])] + LIBS=$libgfor_check_for_broken_isnan_save_LIBS) +if test x"$libgfor_cv_have_broken_isnan" = xyes; then + AC_DEFINE(HAVE_BROKEN_ISNAN, 1, [Define if isnan is broken.]) +fi]) + +dnl Check whether fpclassify is broken. +dnl The most common problem is that it does not work on long doubles. +AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_FPCLASSIFY], [ + AC_CACHE_CHECK([whether fpclassify is broken], + libgfor_cv_have_broken_fpclassify, [ + libgfor_check_for_broken_fpclassify_save_LIBS=$LIBS + LIBS="$LIBS -lm" + AC_TRY_RUN([ +#include +#include +int main () +{ +#ifdef fpclassify +#ifdef LDBL_MAX + if (fpclassify(LDBL_MAX) == FP_NAN + || fpclassify(LDBL_MAX) == FP_INFINITE) return 1; +#endif +#ifdef DBL_MAX + if (fpclassify(DBL_MAX) == FP_NAN + || fpclassify(DBL_MAX) == FP_INFINITE) return 1; +#endif +#endif +return 0; +}], libgfor_cv_have_broken_fpclassify=no, libgfor_cv_have_broken_fpclassify=yes, [ +case "${target}" in + hppa*-*-hpux*) libgfor_cv_have_broken_fpclassify=yes ;; + *) libgfor_cv_have_broken_fpclassify=no ;; +esac])] + LIBS=$libgfor_check_for_broken_fpclassify_save_LIBS) +if test x"$libgfor_cv_have_broken_fpclassify" = xyes; then + AC_DEFINE(HAVE_BROKEN_FPCLASSIFY, 1, [Define if fpclassify is broken.]) +fi]) + +dnl Check whether the st_ino and st_dev stat fields taken together uniquely +dnl identify the file within the system. This is should be true for POSIX +dnl systems; it is known to be false on mingw32. +AC_DEFUN([LIBGFOR_CHECK_WORKING_STAT], [ + AC_CACHE_CHECK([whether the target stat is reliable], + libgfor_cv_have_working_stat, [ + AC_TRY_RUN([ +#include +#include +#include +#include + +int main () +{ + FILE *f, *g; + struct stat st1, st2; + + f = fopen ("foo", "w"); + g = fopen ("bar", "w"); + if (stat ("foo", &st1) != 0 || stat ("bar", &st2)) + return 1; + if (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino) + return 1; + fclose(f); + fclose(g); + return 0; +}], libgfor_cv_have_working_stat=yes, libgfor_cv_have_working_stat=no, [ +case "${target}" in + *mingw*) libgfor_cv_have_working_stat=no ;; + *) libgfor_cv_have_working_stat=yes;; +esac])]) +if test x"$libgfor_cv_have_working_stat" = xyes; then + AC_DEFINE(HAVE_WORKING_STAT, 1, [Define if target has a reliable stat.]) +fi]) + +dnl Checks for fpsetmask function. +AC_DEFUN([LIBGFOR_CHECK_FPSETMASK], [ + AC_CACHE_CHECK([whether fpsetmask is present], libgfor_cv_have_fpsetmask, [ + AC_TRY_LINK([ +#if HAVE_FLOATINGPOINT_H +# include +#endif /* HAVE_FLOATINGPOINT_H */ +#if HAVE_IEEEFP_H +# include +#endif /* HAVE_IEEEFP_H */],[fpsetmask(0);], + eval "libgfor_cv_have_fpsetmask=yes", eval "libgfor_cv_have_fpsetmask=no") + ]) + if test x"$libgfor_cv_have_fpsetmask" = xyes; then + AC_DEFINE(HAVE_FPSETMASK, 1, [Define if you have fpsetmask.]) + fi +]) + +dnl Check whether we have a mingw that provides a __mingw_snprintf function +AC_DEFUN([LIBGFOR_CHECK_MINGW_SNPRINTF], [ + AC_CACHE_CHECK([whether __mingw_snprintf is present], libgfor_cv_have_mingw_snprintf, [ + AC_TRY_LINK([ +#include +extern int __mingw_snprintf (char *, size_t, const char *, ...); +],[ +__mingw_snprintf (NULL, 0, "%d\n", 1); +], + eval "libgfor_cv_have_mingw_snprintf=yes", eval "libgfor_cv_have_mingw_snprintf=no") + ]) + if test x"$libgfor_cv_have_mingw_snprintf" = xyes; then + AC_DEFINE(HAVE_MINGW_SNPRINTF, 1, [Define if you have __mingw_snprintf.]) + fi +]) + +dnl Check whether we have a broken powf implementation +AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_POWF], [ + AC_CACHE_CHECK([whether powf is broken], libgfor_cv_have_broken_powf, [ +case "${target}" in + hppa*64*-*-hpux*) libgfor_cv_have_broken_powf=yes ;; + *) libgfor_cv_have_broken_powf=no;; +esac]) + if test x"$libgfor_cv_have_broken_powf" = xyes; then + AC_DEFINE(HAVE_BROKEN_POWF, 1, [Define if powf is broken.]) + fi +])