[svn-r19567] Maintenance: Added -O3 to be used with the C Intel v 11 compilers; set default to -O for all

             unknown versions of the C Intel compilers.
             Modified apple config file to display Intel compiler information.
             Updated RELEASE.txt notes accordingly.
Platfroms tested: jam, amani and dubna (Mac 64-bit) with Intel C, Fortran and C++ compilers.

1 files changed, 7 insertions, 7 deletions

diff --git a/config/intel-flags b/config/intel-flags
index 5bf06d4..1d07714 100644
--- a/config/intel-flags
+++ b/config/intel-flags
@@ -70,13 +70,8 @@ if test "X-icc" = "X-$cc_vendor"; then
     # Default to C99 standard.
     H5_CFLAGS="${H5_CFLAGS:--std=c99 $arch}"
 
-    # Production
-    # -Wl,-s to remove all symbols for smaller file
-    # O3 optimization causes compilation failures on many platforms;
-    # the problem exists in all versions of the icc compiler up to the latest 9.1
-    # I changed optimization flag to default -O2. EIP, 2006-08-15
-    #PROD_CFLAGS="-O3 -Wl,-s"
-    PROD_CFLAGS="-O2 -Wl,-s"
+    # Production is set to default; see settings for specific version further down
+    PROD_CFLAGS= "-O"
     PROD_CPPFLAGS=
 
     # Debug
@@ -98,6 +93,11 @@ fi
 # Please follow the pattern below by adding new versions at the top, copying
 # the information from the previous version and adding modifications to that.
 case "$cc_vendor-$cc_version" in
+    icc-11*)
+        # -s became obsolete; we also fixed bugs that allow us to enable higher level
+        # of optimization starting with 1.8.7
+        PROD_CFLAGS="-O3"
+        ;;
     icc-10*)
         PROD_CFLAGS="-O1 -Wl,-s"
         ;;