I won't name the package because I find this construction really
stupid, but I'm writing CMakeLists.txt files for a package we want to
use and came across this:
%_floof: %.c
$(CC) $(CFLAGS) -DFLOOF -o $@ -lfloof
So I don't really see how CMake could do something like this. And
that doesn't even adding C Preprocessor definitions to the command
line, which is hard to do portably.
What I ended up doing is this Unix-only workaround:
PROJECT(EXAMPLE)
add_custom_command(OUTPUT test_floof.c
COMMAND echo '\#define FLOOF 1' >
${EXAMPLE_BINARY_DIR}/test_floof.c
COMMAND cat ${EXAMPLE_SOURCE_DIR}/test.c >>
${EXAMPLE_BINARY_DIR}/test_floof.c
DEPENDS ${EXAMPLE_SOURCE_DIR}/test.c
)
ADD_EXECUTABLE(test_floof ${EXAMPLE_BINARY_DIR}/test_floof.c)
TARGET_LINK_LIBRARIES(test_floof floof)
This seems incredibly rickety. Is there an elegant way to do this?
And am I missing something in the CMake documentation, but it's
confusing to me how you'd write a custom command that would be general
-- i.e. replace the Gnu Make pattern rules as given above.
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