--- /dev/null
+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
+])
+
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)
SUNPROVERSION=0x400
AC_TRY_RUN(
[
-#include<stdio.h>
int main(void) { return __SUNPRO_C < $SUNPROVERSION;}
],
ac_cv_solaris_cc_good=yes,