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Author SHA1 Message Date
Brad King 39ebfc79e6 Ninja: Add explicit preprocessing step for Fortran 
All Fortran sources need to be preprocessed before any source may be
compiled so that module dependencies can be (later) extracted.  Factor
out an explicit preprocessing step preceding compilation.  Use Ninja
depfile dependencies on the preprocessing step and then compile the
already-preprocessed source with a separate build statement that depends
explicitly only on the preprocessor output.  Later we will insert
dynamic discovery of module dependencies between these steps.
 2016-09-22 13:53:09 -04:00
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 a8e7a1047a GNU: Do not use -isystem with gfortran 
The compiler documents that USE statements search for ".mod" files
in directories specified with -I, but not -isystem.

Reported-by: Hugh Sorby <h.sorby@auckland.ac.nz>
 2015-03-26 09:33:20 -04:00
Tim Gallagher b6b37e3037 Makefile: Add assembly and preprocessed targets for Fortran 
Extend the FortranOnly test to cover "make <src>.i" targets.
 2014-11-10 10:24:53 -05:00
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 5c0c635a09 Fortran: Add support for free- and fixed-form flags 
Define a "Fortran_FORMAT" target and source file property.  Initialize
the target property from a "CMAKE_Fortran_FORMAT" variable.  Interpret
values "FIXED" and "FREE" to indicate the source file format.  Append
corresponding flags to the compiler command line.
 2011-08-31 10:24:43 -04:00
Brad King e28c16b482 Split GNU compiler information files 
This moves GNU compiler flags into new-style modules

  Compiler/GNU-<lang>.cmake
  Platform/<os>-GNU-<lang>.cmake

We use language-independent helper modules

  Compiler/GNU.cmake
  Platform/<os>-GNU.cmake

to define macros consolidating the information.
 2009-12-02 09:52:00 -05:00
Brad King 07ea19ad1f ENH: Implicit link info for C, CXX, and Fortran 
This teaches CMake to detect implicit link information for C, C++, and
Fortran compilers.  We detect the implicit linker search directories and
implicit linker options for UNIX-like environments using verbose output
from compiler front-ends.  We store results in new variables called

  CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES
  CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES

The implicit libraries can contain linker flags as well as library
names.
 2009-07-23 10:07:25 -04:00