[svn-r1475] ./config/gnu-flags [1.2, 1.3]

	A warning is printed for all versions of EGCS before 2.91.67.

1 files changed, 30 insertions, 18 deletions

diff --git a/config/gnu-flags b/config/gnu-flags
index 71de5e3..93f044a 100644
--- a/config/gnu-flags
+++ b/config/gnu-flags
@@ -22,12 +22,17 @@ if test X = "X$cc_flags_set"; then
     if test "-" != "$cc_vendor-$cc_version"; then
 	echo "compiler '$CC' is GNU $cc_vendor-$cc_version"
     fi
+
+    # Some version numbers
+    cc_vers_major=`echo $cc_version | cut -f1 -d.`
+    cc_vers_minor=`echo $cc_version | cut -f2 -d.`
+    cc_vers_patch=`echo $cc_version | cut -f3 -d.`
+    cc_vers_all=`expr $cc_vers_major '*' 1000000 + $cc_vers_minor '*' 1000 + $cc_vers_patch`
 fi
 
-# Warn about old GNU compilers that don't work right.
-case "$cc_vendor-$cc_version" in
-    gcc-2.7.*)
-	cat <<EOF
+# GCC compilers before gcc-2.8.1 have problems with `long long'.
+if test gcc = $cc_vendor -a $cc_vers_all -lt 2008001; then
+    cat <<EOF
     **
     ** This compiler may be unable to properly compile the long long
     ** data type used extensively by hdf5, although specifying
@@ -37,15 +42,23 @@ case "$cc_vendor-$cc_version" in
     ** gcc version 2.8.1 before reporting bugs to the HDF5 team.
     **
 EOF
-	sleep 5
-	;;
-	    
-    pgcc-2.*)
-        v2=`echo $cc_version |cut -f2 -d.`
-	v3=`echo $cc_version |cut -f3 -d.`
-	v=`expr $v2 '*' 1000 + $v3`
-	if test $v -le 91066; then
-	    cat <<EOF
+    sleep 5
+
+# Current EGCS compilers have problems with `long long' and register
+# allocation when optimizations are turned on for x86 systems.
+elif test egcs = $cc_vendor -a $cc_vers_all -le 2091066; then
+    cat <<EOF
+    **
+    ** This compiler may have problems allocating registers when
+    ** optimizations are enabled on some platforms. Specifying
+    ** --disable-hsizet usually avoids the bug.
+    **
+EOF
+    sleep 5
+
+# All current versions of PGCC have problems also.
+elif test pgcc = $cc_vendor -a $cc_vers_all -le 2091066; then	    
+    cat <<EOF
     **
     ** This compiler may have problems allocating registers for long
     ** long data types when optimizations are enabled. There may be
@@ -54,10 +67,9 @@ EOF
     ** Please use gcc-2.8 or egcs-1.1.1 before reporting bugs.
     **
 EOF
-	    sleep 5
-	fi
-	;;
-esac
+    sleep 5
+
+fi
 
 # Architecture-specific flags
 case "$host_cpu" in
@@ -153,4 +165,4 @@ esac
 if test X = "X$cc_flags_set"; then
     cc_vendor=
     cc_version=
-fi
\ No newline at end of file
+fi