3c12752024
PR libfortran/23262 * acinclude.m4 (LIBGFOR_CHECK_CRLF): New check. * configure.ac: Use new check. * configure.in: Regenerate. * config.h.in: Regenerate. * configure: Regenerate. * io/transfer.c (next_record_w): Add case for CRLF as line terminator. * io/unix.c (tempfile, regular_file): Open files with O_BINARY on systems with CRLF. From-SVN: r104009
233 lines
6.7 KiB
Plaintext
233 lines
6.7 KiB
Plaintext
dnl Check:
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dnl * If we have gettimeofday;
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dnl * If we have struct timezone for use in calling it;
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dnl * If calling it with a timezone pointer actually works -- this is deemed
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dnl obsolete or undefined on some systems which say you should use a null
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dnl pointer -- and undefine HAVE_TIMEZONE if so;
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dnl * Whether it only takes one arg.
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AC_DEFUN([LIBGFOR_GETTIMEOFDAY], [
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AC_CHECK_FUNCS(gettimeofday)
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if test "$ac_cv_func_gettimeofday" = yes; then
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AC_CACHE_CHECK([for struct timezone], gfor_cv_struct_timezone,
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[AC_TRY_COMPILE([#include <sys/time.h>],
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[struct timezone tz;],
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gfor_cv_struct_timezone=yes, gfor_cv_struct_timezone=no)])
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if test $gfor_cv_struct_timezone = yes; then
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dnl It may be that we can't call gettimeofday with a non-null pointer.
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dnl In that case we'll lie about struct timezone.
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AC_TRY_RUN([
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#endif
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main ()
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{
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struct timeval time;
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struct timezone dummy;
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if (gettimeofday (&time, &dummy))
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exit (1);
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else
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exit (0);
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}],
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[gfor_have_struct_timezone=yes], [gfor_have_struct_timezone=no],
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[gfor_have_struct_timezone=yes])
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if test $gfor_have_struct_timezone = yes; then
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AC_DEFINE(HAVE_TIMEZONE, 1, [Do we have struct timezone])
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fi
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fi
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AC_REQUIRE([AC_HEADER_TIME])
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AC_CACHE_CHECK([whether gettimeofday can accept two arguments],
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emacs_cv_gettimeofday_two_arguments,
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[AC_TRY_LINK([
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#endif
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],
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[
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struct timeval time;
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#ifdef HAVE_TIMEZONE
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struct timezone dummy;
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#define DUMMY &dummy
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#else
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#define DUMMY NULL
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#endif
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gettimeofday (&time, DUMMY);],
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emacs_cv_gettimeofday_two_arguments=yes,
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emacs_cv_gettimeofday_two_arguments=no)])
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if test $emacs_cv_gettimeofday_two_arguments = no; then
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AC_DEFINE(GETTIMEOFDAY_ONE_ARGUMENT, 1,
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[Does gettimeofday take a single argument])
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fi
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fi])
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sinclude(../libtool.m4)
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dnl The lines below arrange for aclocal not to bring an installed
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dnl libtool.m4 into aclocal.m4, while still arranging for automake to
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dnl add a definition of LIBTOOL to Makefile.in.
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ifelse(,,,[AC_SUBST(LIBTOOL)
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AC_DEFUN([AM_PROG_LIBTOOL])
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AC_DEFUN([AC_LIBTOOL_DLOPEN])
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AC_DEFUN([AC_PROG_LD])
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])
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dnl Check whether the target is ILP32.
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AC_DEFUN([LIBGFOR_TARGET_ILP32], [
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AC_CACHE_CHECK([whether the target is ILP32], target_ilp32, [
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save_CFLAGS="$CFLAGS"
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CFLAGS="-O2"
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AC_TRY_LINK(,[
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if (sizeof(int) == 4 && sizeof(long) == 4 && sizeof(void *) == 4)
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;
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else
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undefined_function ();
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],
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target_ilp32=yes,
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target_ilp32=no)
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CFLAGS="$save_CFLAGS"])
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if test $target_ilp32 = yes; then
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AC_DEFINE(TARGET_ILP32, 1,
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[Define to 1 if the target is ILP32.])
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fi
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])
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dnl Check whether the target supports hidden visibility.
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AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY], [
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AC_CACHE_CHECK([whether the target supports hidden visibility],
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have_attribute_visibility, [
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
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[], have_attribute_visibility=yes,
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have_attribute_visibility=no)
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CFLAGS="$save_CFLAGS"])
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if test $have_attribute_visibility = yes; then
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AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1,
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[Define to 1 if the target supports __attribute__((visibility(...))).])
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fi])
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dnl Check whether the target supports dllexport
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AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT], [
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AC_CACHE_CHECK([whether the target supports dllexport],
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have_attribute_dllexport, [
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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AC_TRY_COMPILE([void __attribute__((dllexport)) foo(void) { }],
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[], have_attribute_dllexport=yes,
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have_attribute_dllexport=no)
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CFLAGS="$save_CFLAGS"])
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if test $have_attribute_dllexport = yes; then
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AC_DEFINE(HAVE_ATTRIBUTE_DLLEXPORT, 1,
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[Define to 1 if the target supports __attribute__((dllexport)).])
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fi])
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dnl Check whether the target supports symbol aliases.
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AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_ALIAS], [
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AC_CACHE_CHECK([whether the target supports symbol aliases],
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have_attribute_alias, [
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AC_TRY_LINK([
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#define ULP STR1(__USER_LABEL_PREFIX__)
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#define STR1(x) STR2(x)
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#define STR2(x) #x
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void foo(void) { }
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extern void bar(void) __attribute__((alias(ULP "foo")));],
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[bar();], have_attribute_alias=yes, have_attribute_alias=no)])
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if test $have_attribute_alias = yes; then
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AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1,
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[Define to 1 if the target supports __attribute__((alias(...))).])
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fi])
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dnl Check whether target can unlink a file still open.
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AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [
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AC_CACHE_CHECK([whether the target can unlink an open file],
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have_unlink_open_file, [
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AC_TRY_RUN([
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/stat.h>
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int main ()
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{
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int fd;
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fd = open ("testfile", O_RDWR | O_CREAT, S_IWRITE | S_IREAD);
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if (fd <= 0)
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return 0;
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if (unlink ("testfile") == -1)
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return 1;
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write (fd, "This is a test\n", 15);
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close (fd);
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if (open ("testfile", O_RDONLY, S_IWRITE | S_IREAD) == -1 && errno == ENOENT)
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return 0;
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else
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return 1;
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}], have_unlink_open_file=yes, have_unlink_open_file=no, [
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case "${target}" in
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*mingw*) have_unlink_open_file=no ;;
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*) have_unlink_open_file=yes;;
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esac])])
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if test x"$have_unlink_open_file" = xyes; then
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AC_DEFINE(HAVE_UNLINK_OPEN_FILE, 1, [Define if target can unlink open files.])
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fi])
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dnl Check whether CRLF is the line terminator
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AC_DEFUN([LIBGFOR_CHECK_CRLF], [
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AC_CACHE_CHECK([whether the target has CRLF as line terminator],
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have_crlf, [
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AC_TRY_RUN([
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/* This test program should exit with status 0 if system uses a CRLF as
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line terminator, and status 1 otherwise.
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Since it is used to check for mingw systems, and should return 0 in any
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other case, in case of a failure we will not use CRLF. */
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <stdio.h>
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int main ()
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{
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#ifndef O_BINARY
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exit(1);
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#else
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int fd, bytes;
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char buff[5];
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fd = open ("foo", O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU);
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if (fd < 0)
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exit(1);
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if (write (fd, "\n", 1) < 0)
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perror ("write");
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close (fd);
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if ((fd = open ("foo", O_RDONLY | O_BINARY, S_IRWXU)) < 0)
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exit(1);
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bytes = read (fd, buff, 5);
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if (bytes == 2 && buff[0] == '\r' && buff[1] == '\n')
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exit(0);
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else
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exit(1);
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#endif
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}], have_crlf=yes, have_crlf=no, [
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case "${target}" in
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*mingw*) have_crlf=yes ;;
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*) have_crlf=no;;
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esac])])
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if test x"$have_crlf" = xyes; then
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AC_DEFINE(HAVE_CRLF, 1, [Define if CRLF is line terminator.])
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fi])
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