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Author SHA1 Message Date
Brad King a66004bee0 Honor CMAKE_<LANG>_FLAGS[_<CONFIG>]_INIT set in toolchain files 
Document these variables.

Change our convention for setting these variables from:

    set(CMAKE_C_FLAGS_INIT "...")

to

    string(APPEND CMAKE_C_FLAGS_INIT " ...")

so that any value previously set by a toolchain file will be used.

Automate the conversion with:

    sed -i 's/set *(\(CMAKE_\(C\|CXX\|Fortran\|RC\|ASM\|${[^}]\+}\)_FLAGS\(_[^_]\+\)\?_INIT \+"\)/string(APPEND \1 /' \
      Modules/Compiler/*.cmake Modules/Platform/*.cmake

and follow up with some manual fixes (e.g. to cases that already
meant to append).  Also revert the automated changes to contexts
that are not protected from running multiple times.
 2016-07-06 10:13:31 -04:00
Brad King a33fb493de XL: Drop -qalias=noansi from default C flags 
This was added without explanation by commit v2.8.2~1138 (Add initial XL
C compiler flags for safer builds, 2009-09-30).  It is not consistent
with our default C++ flags for XL and disables several optimizations, so
drop it from our default flags for C.

Suggested-by: Todd Gamblin <tgamblin@llnl.gov>
 2015-07-02 09:20:14 -04:00
Kitware Robot 77543bde41 Convert CMake-language commands to lower case 
Ancient CMake versions required upper-case commands.  Later command
names became case-insensitive.  Now the preferred style is lower-case.

Run the following shell code:

cmake --help-command-list |
grep -v "cmake version" |
while read c; do
    echo 's/\b'"$(echo $c | tr '[:lower:]' '[:upper:]')"'\(\s*\)(/'"$c"'\1(/g'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
 2012-08-13 14:19:16 -04:00
Brad King 2f3eee7490 XL: Consolidate compiler flag information 
Factor duplicate information out of Compiler/XL-<lang>.cmake modules
into a macro in a new Compiler/XL.cmake module.  Invoke it from the
per-language files to produce the original settings.
 2011-04-07 17:09:05 -04:00
Brad King e1729238c9 Add initial XL C compiler flags for safer builds 
This commit adds some default initial C flags for the XL compiler.  The
most important is "-qhalt=e" which causes the compiler to error-out on
non-severe error messages.  This is necessary to get try-compiles to
fail when bad arguments are passed to a function.
 2009-09-30 09:38:23 -04:00
Brad King 6d434ee6cc Split XL compiler information files 
This moves platform-independent XL compiler flags into separate
"Compiler/XL-<lang>.cmake" modules.  Platform-specific flags go in
"Platform/<os>-XL-<lang>.cmake" modules.
 2009-09-30 09:37:35 -04:00
Brad King 115ecc5750 Teach compiler id about VisualAge -> XL rebranding 
IBM rebranded its VisualAge compiler to XL starting at version 8.0.  We
use the compiler id "XL" for newer versions and "VisualAge" for older
versions.  We now also recognize the "z/OS" compiler, which is distinct
from XL.
 2009-08-07 10:13:07 -04:00