diff options
| author | Peter Eisentraut | 2003-01-28 21:57:12 +0000 |
|---|---|---|
| committer | Peter Eisentraut | 2003-01-28 21:57:12 +0000 |
| commit | 955a1f81a702489102b2526e24631b9f51e14247 (patch) | |
| tree | 0539ade1756c036ad8a64471cc01c27a9879b0a4 /config/c-compiler.m4 | |
| parent | c0276244b1856537aa2a7c8abd0992c3492516fd (diff) | |
Factor out the code that detects the long long int snprintf format into a
separate macro. Also add support for %I64d which is the way on Windows.
The code that checks for the 64-bit int type now gives more reasonable
results when cross-compiling: In that case we just take the compiler's
information and trust that the arithmetic works. Disabling int64 is too
pessimistic.
Diffstat (limited to 'config/c-compiler.m4')
| -rw-r--r-- | config/c-compiler.m4 | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/config/c-compiler.m4 b/config/c-compiler.m4 index 5171e1e6d97..2f1d228623f 100644 --- a/config/c-compiler.m4 +++ b/config/c-compiler.m4 @@ -1,5 +1,5 @@ # Macros to detect C compiler features -# $Header: /cvsroot/pgsql/config/c-compiler.m4,v 1.5 2002/03/29 17:32:53 petere Exp $ +# $Header: /cvsroot/pgsql/config/c-compiler.m4,v 1.6 2003/01/28 21:57:12 petere Exp $ # PGAC_C_SIGNED @@ -54,9 +54,11 @@ main() { }], [Ac_cachevar=yes], [Ac_cachevar=no], -[Ac_cachevar=no -dnl We will do better here with Autoconf 2.50 -AC_MSG_WARN([64 bit arithmetic disabled when cross-compiling])])]) +[# If cross-compiling, check the size reported by the compiler and +# trust that the arithmetic works. +AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([], [sizeof($1) == 8])], + Ac_cachevar=yes, + Ac_cachevar=no)])]) Ac_define=$Ac_cachevar if test x"$Ac_cachevar" = xyes ; then |