CODEWITHSUNDEEP
cmakefileglob
fadedbee
fadedbee

Reputation: 44807

Make: How to generate list of all .c files except one

I have a make project with two real targets, a testsuite and the project's executable.

To build these I want rules something like:

testsuite: *.c (except executable.c) *.h
    clang ... *.c (except executable.c) -o testsuite

executable: *.c (except testsuite.c) *.h
    clang ... *.c (except testsuite.c) -o executable

What's the correct syntax for this, if it's possible?

Upvotes: 3

Views: 2475

Answers (2)

Etan Reisner
Etan Reisner

Reputation: 81012

Something like this should do what you want.

# Explicitly list the sources specific to each target.
EXECUTABLE_SOURCES := executable.c
TESTSUITE_SOURCES := testsuite.c

# Filter out all specific sources from the common wildcard-ed sources.
COMMON_SOURCES := $(filter-out $(TESTSUITE_SOURCES) $(EXECUTABLE_SOURCES),$(wildcard *.c))

testsuite: $(TESTSUITE_SOURCES) $(COMMON_SOURCES)
        clang ....

executable: $(EXECUTABLE_SOURCES) $(COMMON_SOURCES)
        clang ....

Upvotes: 6

marek.jancuska
marek.jancuska

Reputation: 310

caveat: I did not test

You could use something like testsuite: $(filter-out executable.c,$(wildcard *.c)) . I think wildcard function is needed, as you don't want to operate on string "*.c", but its expansion. Prerequisites are expanded automatically, but function arguments are not. From info make:

Wildcard expansion is performed by 'make' automatically in targets and in prerequisites. In recipes, the shell is responsible for wildcard expansion. In other contexts, wildcard expansion happens only if you request it explicitly with the 'wildcard' function.

Upvotes: 1

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