diff options
Diffstat (limited to 'm4/limits-h.m4')
| -rw-r--r-- | m4/limits-h.m4 | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/m4/limits-h.m4 b/m4/limits-h.m4 index 8588c193c7d..1825328380b 100644 --- a/m4/limits-h.m4 +++ b/m4/limits-h.m4 @@ -23,14 +23,27 @@ AC_DEFUN_ONCE([gl_LIMITS_H], int wb = WORD_BIT; int ullw = ULLONG_WIDTH; int bw = BOOL_WIDTH; + int bm = BOOL_MAX; + int mblm = MB_LEN_MAX; ]])], [gl_cv_header_limits_width=yes], [gl_cv_header_limits_width=no])]) - if test "$gl_cv_header_limits_width" = yes; then - GL_GENERATE_LIMITS_H=false - else - GL_GENERATE_LIMITS_H=true - fi + GL_GENERATE_LIMITS_H=true + AS_IF([test "$gl_cv_header_limits_width" = yes], + [AC_CACHE_CHECK([whether limits.h has SSIZE_MAX], + [gl_cv_header_limits_ssize_max], + [AC_COMPILE_IFELSE( + [AC_LANG_SOURCE( + [[#include <limits.h> + #ifndef SSIZE_MAX + #error "SSIZE_MAX is not defined" + #endif + ]])], + [gl_cv_header_limits_ssize_max=yes], + [gl_cv_header_limits_ssize_max=no])]) + if test "$gl_cv_header_limits_ssize_max" = yes; then + GL_GENERATE_LIMITS_H=false + fi]) ]) dnl Unconditionally enables the replacement of <limits.h>. |