diff options
Diffstat (limited to 'm4/wctype.m4')
| -rw-r--r-- | m4/wctype.m4 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/m4/wctype.m4 b/m4/wctype.m4 new file mode 100644 index 0000000..3660d7d --- /dev/null +++ b/m4/wctype.m4 @@ -0,0 +1,51 @@ +# wctype.m4 serial 6 +dnl Copyright (C) 2011-2024 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. + +AC_DEFUN_ONCE([gl_FUNC_WCTYPE], +[ + AC_REQUIRE([gl_WCTYPE_H_DEFAULTS]) + AC_REQUIRE([gl_WCTYPE_H]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + HAVE_WCTYPE=$HAVE_WCTYPE_T + if test $HAVE_WCTYPE = 1; then + AC_CACHE_CHECK([whether wctype supports the "blank" and "punct" character classes], + [gl_cv_func_wctype_works], + [AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ + #include <ctype.h> + #include <wchar.h> + #include <wctype.h> + int main () + { + /* This test fails on mingw. */ + if (wctype ("blank") == (wctype_t)0) + return 1; + /* This test fails on MSVC 14. */ + if ((! iswctype ('\t', wctype ("blank"))) != (! iswblank ('\t'))) + return 2; + /* This test fails on Android 11. */ + if ((! iswctype ('\`', wctype ("punct"))) != (! ispunct ('\`'))) + return 4; + return 0; + } + ]])], + [gl_cv_func_wctype_works=yes], [gl_cv_func_wctype_works=no], + [case "$host_os" in + # Guess no on native Windows. + mingw* | windows*) gl_cv_func_wctype_works="guessing no" ;; + # Guess no on Android. + android*) gl_cv_func_wctype_works="guessing no" ;; + # Guess yes otherwise. + *) gl_cv_func_wctype_works="guessing yes" ;; + esac + ]) + ]) + case "$gl_cv_func_wctype_works" in + *yes) ;; + *) REPLACE_WCTYPE=1 ;; + esac + fi +]) |