From 1371bb1bec811b2671f5bd7652616e9180c52517 Mon Sep 17 00:00:00 2001
From: Harald Barth <haba@stacken.kth.se>
Date: Thu, 15 Aug 2002 22:10:23 +0000
Subject: [PATCH] compiler-autoconf-tests-20020815

attempt to find compilers we like
---
 src/cf/aix-cc.m4     | 44 ++++++++++++++++++++++++++++++++++++++++++++
 src/cf/solaris-cc.m4 |  9 +++++++--
 2 files changed, 51 insertions(+), 2 deletions(-)
 create mode 100644 src/cf/aix-cc.m4

diff --git a/src/cf/aix-cc.m4 b/src/cf/aix-cc.m4
new file mode 100644
index 0000000..acdec7a
--- /dev/null
+++ b/src/cf/aix-cc.m4
@@ -0,0 +1,44 @@
+dnl
+dnl $Id$
+dnl 
+
+dnl We do not quite know how the version number of the xlc
+dnl corresponds to the value of __IBMCC__ but 440 (decimal)
+dnl seems to be the first compiler that works for us.
+dnl 
+dnl Guess:
+dnl
+dnl lslpp says			__IBMCC__
+dnl
+dnl vac.C 4.4.0.0		440
+dnl vac.C 5.0.2.1		502
+dnl
+
+AC_DEFUN(AC_AIX_CC_GOOD, [
+AIXCC="$CC"
+save_CC="$CC"
+if test "$CC" ; then
+  AC_CHECK_PROGS(AIXCC, "$CC" xlc /usr/vac/bin/xlc gcc)
+else
+  AC_CHECK_PROGS(AIXCC, xlc /usr/vac/bin/xlc gcc)
+fi
+CC="$AIXCC"
+AC_MSG_CHECKING(whether CC is a good enough Aix cc)
+AC_CACHE_VAL(ac_cv_aix_cc_good,
+[
+XLCVERSION=440
+AC_TRY_RUN(
+[
+int main(void) { return __IBMC__ < $XLCVERSION;}
+], 
+ac_cv_aix_cc_good=yes,
+ac_cv_aix_cc_good=no,
+ac_cv_aix_cc_good=no)
+AC_MSG_RESULT($ac_cv_aix_cc_good)])
+if test "$ac_cv_aix_cc_good" = "yes"; then
+  AC_CHECK_PROGS(CC, "$AIXCC")
+else
+  CC="$save_CC"
+fi
+])
+
diff --git a/src/cf/solaris-cc.m4 b/src/cf/solaris-cc.m4
index 0c114a5..abb2e74 100644
--- a/src/cf/solaris-cc.m4
+++ b/src/cf/solaris-cc.m4
@@ -2,10 +2,16 @@ dnl
 dnl $Id$
 dnl 
 
+dnl
+dnl The Solaris compiler defines __SUNPRO_C as a hex number
+dnl whose digits correspond to the digits in the compiler
+dnl version. Thus compiler version 4.2.0 is 0x420.
+dnl
+
 AC_DEFUN(AC_SOLARIS_CC_GOOD, [
 SOLARISCC="$CC"
 save_CC="$CC"
-if test -x "$CC" ; then
+if test "$CC" ; then
   AC_CHECK_PROGS(SOLARISCC, "$CC" cc /opt/SUNWspro/bin/cc gcc)
 else
   AC_CHECK_PROGS(SOLARISCC, cc /opt/SUNWspro/bin/cc gcc)
@@ -17,7 +23,6 @@ AC_CACHE_VAL(ac_cv_solaris_cc_good,
 SUNPROVERSION=0x400
 AC_TRY_RUN(
 [
-#include<stdio.h>
 int main(void) { return __SUNPRO_C < $SUNPROVERSION;}
 ], 
 ac_cv_solaris_cc_good=yes,
-- 
1.9.4