diff options
| author | Yang Tse <yangsita@gmail.com> | 2009-05-01 02:03:42 +0000 |
|---|---|---|
| committer | Yang Tse <yangsita@gmail.com> | 2009-05-01 02:03:42 +0000 |
| commit | 8469db016d8663f03b6e28a9640927897e16f5b7 (patch) | |
| tree | e5a4167e4b520218af3230cbacf42bc87e4e3558 /acinclude.m4 | |
| parent | f6312b16f11bd0b9458f9148b3ee5f092348cef7 (diff) | |
Check definition of _XOPEN_SOURCE_EXTENDED with the compiler
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 0e2a528af..0f7dbf44a 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -118,6 +118,44 @@ CURL_DEF_TOKEN $1 ]) +dnl CURL_CHECK_DEF_CC (SYMBOL, [INCLUDES], [SILENT]) +dnl ------------------------------------------------- +dnl Use the C compiler to find out only if the given symbol is defined +dnl or not, this can not find out its expansion. This macro will not use +dnl default includes even if no INCLUDES argument is given. This macro +dnl will run silently when invoked with three arguments. + +AC_DEFUN([CURL_CHECK_DEF_CC], [ + AS_VAR_PUSHDEF([ac_HaveDef], [curl_cv_have_def_$1])dnl + ifelse($3,,[AC_MSG_CHECKING([for compiler definition of $1])]) + AC_COMPILE_IFELSE([ + AC_LANG_SOURCE( +ifelse($2,,,[$2])[[ +int main (void) +{ +#ifdef $1 + return 0; +#else + force compilation error +#endif +} + ]]) + ],[ + tst_symbol_defined="yes" + ],[ + tst_symbol_defined="no" + ]) + if test "$tst_symbol_defined" = "yes"; then + AS_VAR_SET(ac_HaveDef, yes) + ifelse($3,,[AC_MSG_RESULT([yes])]) + else + AS_VAR_SET(ac_HaveDef, no) + ifelse($3,,[AC_MSG_RESULT([no])]) + fi + AS_VAR_POPDEF([ac_HaveDef])dnl +]) + + dnl CURL_CHECK_AIX_ALL_SOURCE dnl ------------------------------------------------- dnl Provides a replacement of traditional AC_AIX with |