diff options
Diffstat (limited to 'gl/m4/wchar.m4')
| -rw-r--r-- | gl/m4/wchar.m4 | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/gl/m4/wchar.m4 b/gl/m4/wchar.m4 index 068f22d3..70b1248f 100644 --- a/gl/m4/wchar.m4 +++ b/gl/m4/wchar.m4 @@ -7,23 +7,48 @@ dnl with or without modifications, as long as this notice is preserved. dnl Written by Eric Blake. -# wchar.m4 serial 1 +# wchar.m4 serial 4 AC_DEFUN([gl_WCHAR_H], [ + AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_CACHE_CHECK([whether <wchar.h> is standalone], [gl_cv_header_wchar_h_standalone], [AC_COMPILE_IFELSE([[#include <wchar.h> wchar_t w;]], [gl_cv_header_wchar_h_standalone=yes], [gl_cv_header_wchar_h_standalone=no])]) - if test $gl_cv_header_wchar_h_standalone = yes; then - WCHAR_H= - else - gl_ABSOLUTE_HEADER([wchar.h]) - ABSOLUTE_WCHAR_H=\"$gl_cv_absolute_wchar_h\" + if test $gl_cv_header_wchar_h_standalone != yes; then WCHAR_H=wchar.h fi - AC_SUBST([ABSOLUTE_WCHAR_H]) + + dnl Prepare for creating substitute <wchar.h>. + dnl Do it always: WCHAR_H may be empty here but can be set later. + dnl Check for <wchar.h> (missing in Linux uClibc when built without wide + dnl character support). + AC_CHECK_HEADERS_ONCE([wchar.h]) + if test $ac_cv_header_wchar_h = yes; then + HAVE_WCHAR_H=1 + else + HAVE_WCHAR_H=0 + fi + AC_SUBST([HAVE_WCHAR_H]) + gl_CHECK_NEXT_HEADERS([wchar.h]) +]) + +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]) + GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1 +]) + +AC_DEFUN([gl_WCHAR_H_DEFAULTS], +[ + GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH]) + dnl Assume proper GNU behavior unless another module says otherwise. + HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH]) + REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH]) + WCHAR_H= AC_SUBST([WCHAR_H]) ]) |