[
gl_CHECK_NEXT_HEADERS([limits.h])
- AC_CACHE_CHECK([whether limits.h has ULLONG_WIDTH etc.],
+ AC_CACHE_CHECK([whether limits.h has LLONG_MAX, WORD_BIT, ULLONG_WIDTH etc.],
[gl_cv_header_limits_width],
[AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
- #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
- #endif
- #include <limits.h>
- int ullw = ULLONG_WIDTH;]])],
+ [AC_LANG_PROGRAM(
+ [[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+ #endif
+ #include <limits.h>
+ long long llm = LLONG_MAX;
+ int wb = WORD_BIT;
+ int ullw = ULLONG_WIDTH;
+ ]])],
[gl_cv_header_limits_width=yes],
[gl_cv_header_limits_width=no])])
if test "$gl_cv_header_limits_width" = yes; then
AC_SUBST([LIMITS_H])
AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"])
])
+
+dnl Unconditionally enables the replacement of <limits.h>.
+AC_DEFUN([gl_REPLACE_LIMITS_H],
+[
+ AC_REQUIRE([gl_LIMITS_H])
+ LIMITS_H='limits.h'
+ AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"])
+])