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[rfa] configure: new variable HAVE_UINTPTR_T
- From: Michael Elizabeth Chastain <mec at shout dot net>
- To: gdb-patches at sources dot redhat dot com
- Date: Wed, 26 Feb 2003 08:45:46 -0600
- Subject: [rfa] configure: new variable HAVE_UINTPTR_T
Draft #3. Following Daniel J's advice, I use AC_CACHE_CHECK and the
multi-argument form of AC_DEFINE. I re-tested with and without
uintptr_t in /usr/include/stdint.h to hit both paths.
I also learned that config.in is a regenerated file, not a hand-edited
file. And by using multi-argument AC_DEFINE I dropped the change to
I don't show diffs for regenerated 'configure' and 'config.in'. I
regenerated with stock autoconf 2.13 and autoheader 2.13 from
ftp.gnu.org.
Again, this is so that the gdb build can do something better when
it needs uintptr_t and doesn't have it (pr gdb/660). My notion of
'something better' is going to be to spit out a better error message,
not to actually work. Somebody has to have a really old libc
(more than 3 years old) to get this message, but with millions of
users, some people do.
OK to commit?
Michael C
2003-02-26 Michael Chastain <mec at shout dot net>
* configure.in: New variable HAVE_UINTPTR_T.
* configure, config.in: Regenerated.
Index: configure.in
===================================================================
RCS file: /cvs/src/src/gdb/configure.in,v
retrieving revision 1.125
diff -u -r1.125 configure.in
--- configure.in 20 Feb 2003 23:38:58 -0000 1.125
+++ configure.in 26 Feb 2003 14:38:49 -0000
@@ -511,6 +511,18 @@
AC_DEFINE(HAVE_PT_GETXMMREGS)
fi
+# See if stdint.h provides the uintptr_t type.
+# Autoconf 2.5X has an improved AC_CHECK_TYPE which will simplify this.
+AC_CACHE_CHECK([for uintptr_t in stdint.h], gdb_cv_have_uintptr_t,
+ [AC_TRY_COMPILE(
+ [#include <stdint.h>],
+ [uintptr_t foo = 0;],
+ gdb_cv_have_uintptr_t=yes,
+ gdb_cv_have_uintptr_t=no)])
+AC_MSG_RESULT($gdb_cv_have_uintptr_t)
+if test $gdb_cv_have_uintptr_t = yes; then
+ AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if <stdint.h> provides the uintptr_t type.])
+fi
BFD_NEED_DECLARATION(malloc)
BFD_NEED_DECLARATION(realloc)