dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
-dnl Copyright (C) 2007-2016 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl Written by Eric Blake.
-# wchar_h.m4 serial 40
+# wchar_h.m4 serial 53
-AC_DEFUN([gl_WCHAR_H],
+AC_DEFUN_ONCE([gl_WCHAR_H],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
AC_REQUIRE([gl_WCHAR_H_INLINE_OK])
fi
AC_SUBST([HAVE_WINT_T])
+ AC_REQUIRE([gl_TYPE_WINT_T_PREREQ])
+
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[
-/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
- <wchar.h>.
- BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
- included before <wchar.h>. */
-#if !(defined __GLIBC__ && !defined __UCLIBC__)
-# include <stddef.h>
-# include <stdio.h>
-# include <time.h>
-#endif
-#include <wchar.h>
+ #include <wchar.h>
]],
[btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
- wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset
+ wcsrtombs wcsnrtombs wcwidth
+ wmemchr wmemcmp wmemcpy wmemmove wmempcpy wmemset
wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp
wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr
- wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth
+ wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth wcsftime
])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ AC_CHECK_DECLS([wcsdup], [], [], [[
+ #include <wchar.h>
+ ]])
+ if test $ac_cv_have_decl_wcsdup = no; then
+ HAVE_DECL_WCSDUP=0
+ fi
])
dnl Check whether <wchar.h> is usable at all.
AC_DEFUN([gl_WCHAR_H_INLINE_OK],
[
dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
- dnl 'gnu_inline'. See <http://sourceware.org/bugzilla/show_bug.cgi?id=4022>
- dnl and <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
+ dnl 'gnu_inline'. See <https://sourceware.org/bugzilla/show_bug.cgi?id=4022>
+ dnl and <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
+ AC_REQUIRE([AC_CANONICAL_HOST])
AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
[gl_cv_header_wchar_h_correct_inline],
[gl_cv_header_wchar_h_correct_inline=yes
- AC_LANG_CONFTEST([
- AC_LANG_SOURCE([[#define wcstod renamed_wcstod
-/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
- <wchar.h>.
- BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
- included before <wchar.h>. */
-#include <stddef.h>
-#include <stdio.h>
-#include <time.h>
-#include <wchar.h>
-extern int zero (void);
-int main () { return zero(); }
-]])])
- dnl Do not rename the object file from conftest.$ac_objext to
- dnl conftest1.$ac_objext, as this will cause the link to fail on
- dnl z/OS when using the XPLINK object format (due to duplicate
- dnl CSECT names). Instead, temporarily redefine $ac_compile so
- dnl that the object file has the latter name from the start.
- save_ac_compile="$ac_compile"
- ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest1/`
- if AC_TRY_EVAL([ac_compile]); then
- AC_LANG_CONFTEST([
- AC_LANG_SOURCE([[#define wcstod renamed_wcstod
-/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
- <wchar.h>.
- BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
- included before <wchar.h>. */
-#include <stddef.h>
-#include <stdio.h>
-#include <time.h>
-#include <wchar.h>
-int zero (void) { return 0; }
-]])])
- dnl See note above about renaming object files.
- ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest2/`
- if AC_TRY_EVAL([ac_compile]); then
- if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
- :
- else
- gl_cv_header_wchar_h_correct_inline=no
+ case "$host_os" in
+ *-gnu* | gnu*)
+ AC_LANG_CONFTEST([
+ AC_LANG_SOURCE([[
+ #define wcstod renamed_wcstod
+ #include <wchar.h>
+ extern int zero (void);
+ int main () { return zero(); }
+ ]])])
+ dnl Do not rename the object file from conftest.$ac_objext to
+ dnl conftest1.$ac_objext, as this will cause the link to fail on
+ dnl z/OS when using the XPLINK object format (due to duplicate
+ dnl CSECT names). Instead, temporarily redefine $ac_compile so
+ dnl that the object file has the latter name from the start.
+ save_ac_compile="$ac_compile"
+ ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest1/`
+ if echo '#include "conftest.c"' >conftest1.c \
+ && AC_TRY_EVAL([ac_compile]); then
+ AC_LANG_CONFTEST([
+ AC_LANG_SOURCE([[
+ #define wcstod renamed_wcstod
+ #include <wchar.h>
+ int zero (void) { return 0; }
+ ]])])
+ dnl See note above about renaming object files.
+ ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest2/`
+ if echo '#include "conftest.c"' >conftest2.c \
+ && AC_TRY_EVAL([ac_compile]); then
+ if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
+ :
+ else
+ gl_cv_header_wchar_h_correct_inline=no
+ fi
+ fi
fi
- fi
- fi
- ac_compile="$save_ac_compile"
- rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
+ ac_compile="$save_ac_compile"
+ rm -f conftest[12].c conftest[12].$ac_objext conftest$ac_exeext
+ ;;
+ esac
])
if test $gl_cv_header_wchar_h_correct_inline = no; then
AC_MSG_ERROR([<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
C99 mode. You have four options:
- Add the flag -fgnu89-inline to CC and reconfigure, or
- Fix your include files, using parts of
- <http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
+ <https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
- Use a gcc version older than 4.3, or
- Don't use the flags -std=c99 or -std=gnu99.
Configuration aborted.])
fi
])
+# gl_WCHAR_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
[
- dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
- AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+ dnl Ensure to expand the default settings once only.
+ gl_WCHAR_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_WCHAR_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_WCHAR_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_BTOWC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTOB])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSINIT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBRTOWC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBRLEN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSRTOWCS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNRTOWCS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCRTOMB])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSRTOMBS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNRTOMBS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCWIDTH])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMCMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMMOVE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMPCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMSET])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSLEN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNLEN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCPCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCPNCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCASECMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCASECMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCOLL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSXFRM])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSDUP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSRCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCSPN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSSPN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSPBRK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSSTR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSTOK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSWIDTH])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSFTIME])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WCSDUP], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_WCHAR_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+])
+
AC_DEFUN([gl_WCHAR_H_DEFAULTS],
[
- GNULIB_BTOWC=0; AC_SUBST([GNULIB_BTOWC])
- GNULIB_WCTOB=0; AC_SUBST([GNULIB_WCTOB])
- GNULIB_MBSINIT=0; AC_SUBST([GNULIB_MBSINIT])
- GNULIB_MBRTOWC=0; AC_SUBST([GNULIB_MBRTOWC])
- GNULIB_MBRLEN=0; AC_SUBST([GNULIB_MBRLEN])
- GNULIB_MBSRTOWCS=0; AC_SUBST([GNULIB_MBSRTOWCS])
- GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS])
- GNULIB_WCRTOMB=0; AC_SUBST([GNULIB_WCRTOMB])
- GNULIB_WCSRTOMBS=0; AC_SUBST([GNULIB_WCSRTOMBS])
- GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
- GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH])
- GNULIB_WMEMCHR=0; AC_SUBST([GNULIB_WMEMCHR])
- GNULIB_WMEMCMP=0; AC_SUBST([GNULIB_WMEMCMP])
- GNULIB_WMEMCPY=0; AC_SUBST([GNULIB_WMEMCPY])
- GNULIB_WMEMMOVE=0; AC_SUBST([GNULIB_WMEMMOVE])
- GNULIB_WMEMSET=0; AC_SUBST([GNULIB_WMEMSET])
- GNULIB_WCSLEN=0; AC_SUBST([GNULIB_WCSLEN])
- GNULIB_WCSNLEN=0; AC_SUBST([GNULIB_WCSNLEN])
- GNULIB_WCSCPY=0; AC_SUBST([GNULIB_WCSCPY])
- GNULIB_WCPCPY=0; AC_SUBST([GNULIB_WCPCPY])
- GNULIB_WCSNCPY=0; AC_SUBST([GNULIB_WCSNCPY])
- GNULIB_WCPNCPY=0; AC_SUBST([GNULIB_WCPNCPY])
- GNULIB_WCSCAT=0; AC_SUBST([GNULIB_WCSCAT])
- GNULIB_WCSNCAT=0; AC_SUBST([GNULIB_WCSNCAT])
- GNULIB_WCSCMP=0; AC_SUBST([GNULIB_WCSCMP])
- GNULIB_WCSNCMP=0; AC_SUBST([GNULIB_WCSNCMP])
- GNULIB_WCSCASECMP=0; AC_SUBST([GNULIB_WCSCASECMP])
- GNULIB_WCSNCASECMP=0; AC_SUBST([GNULIB_WCSNCASECMP])
- GNULIB_WCSCOLL=0; AC_SUBST([GNULIB_WCSCOLL])
- GNULIB_WCSXFRM=0; AC_SUBST([GNULIB_WCSXFRM])
- GNULIB_WCSDUP=0; AC_SUBST([GNULIB_WCSDUP])
- GNULIB_WCSCHR=0; AC_SUBST([GNULIB_WCSCHR])
- GNULIB_WCSRCHR=0; AC_SUBST([GNULIB_WCSRCHR])
- GNULIB_WCSCSPN=0; AC_SUBST([GNULIB_WCSCSPN])
- GNULIB_WCSSPN=0; AC_SUBST([GNULIB_WCSSPN])
- GNULIB_WCSPBRK=0; AC_SUBST([GNULIB_WCSPBRK])
- GNULIB_WCSSTR=0; AC_SUBST([GNULIB_WCSSTR])
- GNULIB_WCSTOK=0; AC_SUBST([GNULIB_WCSTOK])
- GNULIB_WCSWIDTH=0; AC_SUBST([GNULIB_WCSWIDTH])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC])
HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT])
HAVE_WMEMCMP=1; AC_SUBST([HAVE_WMEMCMP])
HAVE_WMEMCPY=1; AC_SUBST([HAVE_WMEMCPY])
HAVE_WMEMMOVE=1; AC_SUBST([HAVE_WMEMMOVE])
+ HAVE_WMEMPCPY=1; AC_SUBST([HAVE_WMEMPCPY])
HAVE_WMEMSET=1; AC_SUBST([HAVE_WMEMSET])
HAVE_WCSLEN=1; AC_SUBST([HAVE_WCSLEN])
HAVE_WCSNLEN=1; AC_SUBST([HAVE_WCSNLEN])
HAVE_WCSSTR=1; AC_SUBST([HAVE_WCSSTR])
HAVE_WCSTOK=1; AC_SUBST([HAVE_WCSTOK])
HAVE_WCSWIDTH=1; AC_SUBST([HAVE_WCSWIDTH])
+ HAVE_WCSFTIME=1; AC_SUBST([HAVE_WCSFTIME])
HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB])
+ HAVE_DECL_WCSDUP=1; AC_SUBST([HAVE_DECL_WCSDUP])
HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH])
REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T])
REPLACE_BTOWC=0; AC_SUBST([REPLACE_BTOWC])
REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH])
REPLACE_WCSWIDTH=0; AC_SUBST([REPLACE_WCSWIDTH])
+ REPLACE_WCSFTIME=0; AC_SUBST([REPLACE_WCSFTIME])
+ REPLACE_WCSTOK=0; AC_SUBST([REPLACE_WCSTOK])
])
projects / platform / upstream / m4.git / blobdiff