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author | Bruno Haible <bruno@clisp.org> | 2010-03-06 19:08:20 +0100 |
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committer | Bruno Haible <bruno@clisp.org> | 2010-03-06 19:08:20 +0100 |
commit | 74be65e221dba4f3448da5a5e57a9d76dbe52f00 (patch) | |
tree | 6ee71d422915578d4954781fc9a351d66432f6fb /m4/wctype_h.m4 | |
parent | 6c43dca68e6e6adc549bd5b0f9f48db9d0806ac4 (diff) | |
download | gnulib-74be65e221dba4f3448da5a5e57a9d76dbe52f00.tar.gz |
More consistent naming of *.m4 files.
Diffstat (limited to 'm4/wctype_h.m4')
-rw-r--r-- | m4/wctype_h.m4 | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/m4/wctype_h.m4 b/m4/wctype_h.m4 new file mode 100644 index 0000000000..be74ec2700 --- /dev/null +++ b/m4/wctype_h.m4 @@ -0,0 +1,84 @@ +# wctype_h.m4 serial 4 + +dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it. + +dnl Copyright (C) 2006-2010 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 Paul Eggert. + +AC_DEFUN([gl_WCTYPE_H], +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) + AC_CHECK_FUNCS_ONCE([iswcntrl]) + if test $ac_cv_func_iswcntrl = yes; then + HAVE_ISWCNTRL=1 + else + HAVE_ISWCNTRL=0 + fi + AC_SUBST([HAVE_ISWCNTRL]) + AC_CHECK_HEADERS_ONCE([wctype.h]) + AC_REQUIRE([AC_C_INLINE]) + + AC_REQUIRE([gt_TYPE_WINT_T]) + if test $gt_cv_c_wint_t = yes; then + HAVE_WINT_T=1 + else + HAVE_WINT_T=0 + fi + AC_SUBST([HAVE_WINT_T]) + + WCTYPE_H=wctype.h + if test $ac_cv_header_wctype_h = yes; then + if test $ac_cv_func_iswcntrl = yes; then + dnl Linux libc5 has an iswprint function that returns 0 for all arguments. + dnl The other functions are likely broken in the same way. + AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works], + [ + AC_RUN_IFELSE([AC_LANG_SOURCE([[ + #include <stddef.h> + #include <stdio.h> + #include <time.h> + #include <wchar.h> + #include <wctype.h> + int main () { return iswprint ('x') == 0; }]])], + [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h> + #if __GNU_LIBRARY__ == 1 + Linux libc5 i18n is broken. + #endif]], [])], + [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no]) + ]) + ]) + if test $gl_cv_func_iswcntrl_works = yes; then + case "$host_os" in + mingw*) + dnl On mingw, towlower and towupper return random high 16 bits. + ;; + *) + dnl iswcntrl works. towlower and towupper work as well. + WCTYPE_H= + ;; + esac + fi + fi + dnl Compute NEXT_WCTYPE_H even if WCTYPE_H is empty, + dnl for the benefit of builds from non-distclean directories. + gl_CHECK_NEXT_HEADERS([wctype.h]) + HAVE_WCTYPE_H=1 + else + HAVE_WCTYPE_H=0 + fi + AC_SUBST([HAVE_WCTYPE_H]) + AC_SUBST([WCTYPE_H]) + + if test "$gl_cv_func_iswcntrl_works" = no; then + REPLACE_ISWCNTRL=1 + else + REPLACE_ISWCNTRL=0 + fi + AC_SUBST([REPLACE_ISWCNTRL]) +]) |