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| author | Peter Eisentraut <peter_e@gmx.net> | 2000-08-29 09:36:51 +0000 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2000-08-29 09:36:51 +0000 |
| commit | ef6164de1d60f65039a73f5975d50b4fa10b8a5b (patch) | |
| tree | f18f7bc27dee2ad232476f46825918eddc0f75fd /config/c-compiler.m4 | |
| parent | dffd8cac3dd8fb99ed4299bf2ef7eddba6eeaba2 (diff) | |
| download | postgresql-ef6164de1d60f65039a73f5975d50b4fa10b8a5b.tar.gz | |
Revert removal of signed, volatile, and signal handler arg type tests.
Diffstat (limited to 'config/c-compiler.m4')
| -rw-r--r-- | config/c-compiler.m4 | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/config/c-compiler.m4 b/config/c-compiler.m4 index 4ec3b70e89..8db95b90ac 100644 --- a/config/c-compiler.m4 +++ b/config/c-compiler.m4 @@ -1,5 +1,35 @@ # Macros to detect C compiler features -# $Header: /cvsroot/pgsql/config/c-compiler.m4,v 1.2 2000/08/27 19:00:22 petere Exp $ +# $Header: /cvsroot/pgsql/config/c-compiler.m4,v 1.3 2000/08/29 09:36:37 petere Exp $ + + +# PGAC_C_SIGNED +# ------------- +# Check if the C compiler understands signed types. +AC_DEFUN([PGAC_C_SIGNED], +[AC_CACHE_CHECK(for signed types, pgac_cv_c_signed, +[AC_TRY_COMPILE([], +[signed char c; signed short s; signed int i;], +[pgac_cv_c_signed=yes], +[pgac_cv_c_signed=no])]) +if test x"$pgac_cv_c_signed" = xno ; then + AC_DEFINE(signed,, [Define empty if the C compiler does not understand signed types]) +fi])# PGAC_C_SIGNED + + + +# PGAC_C_VOLATILE +# --------------- +# Check if the C compiler understands `volatile'. Note that if it doesn't +# then this will potentially break the program semantics. +AC_DEFUN([PGAC_C_VOLATILE], +[AC_CACHE_CHECK(for volatile, pgac_cv_c_volatile, +[AC_TRY_COMPILE([], +[extern volatile int i;], +[pgac_cv_c_volatile=yes], +[pgac_cv_c_volatile=no])]) +if test x"$pgac_cv_c_volatile" = xno ; then + AC_DEFINE(volatile,, [Define empty if the C compiler does not understand `volatile']) +fi])# PGAC_C_VOLATILE |