[Flang-dev] Flang honoring-DCMAKE_Fortran_COMPILER=${PATH}

blubee blubeeme gurenchan at gmail.com
Thu Jul 12 01:24:37 EDT 2018


Hi

I am trying to build flang the build fails with this error:
[ 25%] Preprocessing ieee_arithmetic.F95
cd /wrkdirs/usr/ports/devel/flang-flang/work/.build/runtime/flang &&
/usr/bin/cc -E
/wrkdirs/usr/ports/devel/flang-flang/work/flang-45d7aeb/runtime/flang/ieee_arithmetic.F95
-DDESC_I8 > I8_sources/ieee_arithmetic.F95
cc: error: unable to execute command: Executable "gcc" doesn't exist!
*** Error code 1

slack user: https://flang-compiler.slack.com/team/U5CNV08UB suggested that
I replace cc with flang -E

After making those changes to the generated cmake files located:
.build/runtime/flang/CMakeFiles/flang_shared.dir/build.make

and replacing all calls to cc with flang -E as below
--------------------------------------------------------------------------------------
runtime/flang/I8_sources/ieee_arithmetic.F95:
        @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR)
--progress-dir=/wrkdirs/usr/ports/devel/flang-flang/work/.build/CMakeFiles
--progress-num=$(CMAKE_PROGRESS_1) "Preprocessing ieee_arithmetic.F95"
        cd /wrkdirs/usr/ports/devel/flang-flang/work/.build/runtime/flang
&& /usr/local/flang/bin/flang -E
/wrkdirs/usr/ports/devel/flang-flang/work/flang-45d7aeb/runtime/flang/ieee_arithmetic.F95
-DDESC_I8 > I8_sources/ieee_arithmetic.F95

runtime/flang/I8_sources/ieee_exceptions.F95:
        @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR)
--progress-dir=/wrkdirs/usr/ports/devel/flang-flang/work/.build/CMakeFiles
--progress-num=$(CMAKE_PROGRESS_2) "Preprocessing ieee_exceptions.F95"
        cd /wrkdirs/usr/ports/devel/flang-flang/work/.build/runtime/flang
&& /usr/local/flang/bin/flang -E
/wrkdirs/usr/ports/devel/flang-flang/work/flang-45d7aeb/runtime/flang/ieee_exceptions.F95
-DDESC_I8 > I8_sources/ieee_exceptions.F95

runtime/flang/CMakeFiles/flang_shared.dir/abort3f.c.o:
runtime/flang/CMakeFiles/flang_shared.dir/flags.make
runtime/flang/CMakeFiles/flang_shared.dir/abort3f.c.o:
/wrkdirs/usr/ports/devel/flang-flang/work/flang-45d7aeb/runtime/flang/abort3f.c
        @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR)
--progress-dir=/wrkdirs/usr/ports/devel/flang-flang/work/.build/CMakeFiles
--progress-num=$(CMAKE_PROGRESS_3) "Building C object
runtime/flang/CMakeFiles/flang_shared.dir/abort3f.c.o"
        cd /wrkdirs/usr/ports/devel/flang-flang/work/.build/runtime/flang
&& /usr/local/flang/bin/flang $(C_DEFINES) -DHAVE_LONG_LONG_INT
-DINT32PTR64 -DKANJI -DPGF90 -DTM_I8 $(C_INCLUDES) $(C_FLAGS) -o
CMakeFiles/flang_shared.dir/abort3f.c.o   -c
/wrkdirs/usr/ports/devel/flang-flang/work/flan
g-45d7aeb/runtime/flang/abort3f.c

runtime/flang/CMakeFiles/flang_shared.dir/abort3f.c.i: cmake_force
        @echo "Preprocessing C source to
CMakeFiles/flang_shared.dir/abort3f.c.i"
        cd /wrkdirs/usr/ports/devel/flang-flang/work/.build/runtime/flang
&& /usr/local/flang/bin/flang $(C_DEFINES) -DHAVE_LONG_LONG_INT
-DINT32PTR64 -DKANJI -DPGF90 -DTM_I8 $(C_INCLUDES) $(C_FLAGS) -E
/wrkdirs/usr/ports/devel/flang-flang/work/flang-45d7aeb/runtime/flang/abort3f.c
> CMakeFile
s/flang_shared.dir/abort3f.c.i

runtime/flang/CMakeFiles/flang_shared.dir/abort3f.c.s: cmake_force
        @echo "Compiling C source to assembly
CMakeFiles/flang_shared.dir/abort3f.c.s"
        cd /wrkdirs/usr/ports/devel/flang-flang/work/.build/runtime/flang
&& /usr/local/flang/bin/flang $(C_DEFINES) -DHAVE_LONG_LONG_INT
-DINT32PTR64 -DKANJI -DPGF90 -DTM_I8 $(C_INCLUDES) $(C_FLAGS) -S
/wrkdirs/usr/ports/devel/flang-flang/work/flang-45d7aeb/runtime/flang/abort3f.c
-o CMakeFil
es/flang_shared.dir/abort3f.c.s
--------------------------------------------------------------------------------------

The project compiles.

My questions is it possible to have the CMake properly generate the files
so that I do not have to manually edit them during the middle of a build?

Are there any patches that I could apply to get this to build properly, I
don't mind testing it before it's upstreamed.

Best,
Owen
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