In Makefile how do I build seperate executable for each C file -


i using check c unit tests. each c library file create there should 1 test file should generate single executable linked test , source code. executable should run make sure tests pass.

when there 1 test file , 1 source file works great. add second source file corresponding test file, tries link them 1 executable.

how second rule pull 1 test_src , matching src , header file test_obj compile 2 object files executable? below current makefile

out_dir=bin build_dir=build test_build_dir=test_build src_dir=src test_src_dir=tests src= $(wildcard $(src_dir)/*.c) test_src= $(patsubst $(src_dir)/%.c, $(test_src_dir)/%_tests.c, $(src)) test_obj= $(patsubst $(test_src_dir)/%.c, $(test_build_dir)/%.o, $(test_src)) obj= $(patsubst $(src_dir)/%.c, $(build_dir)/%.o, $(src))  $(out_dir)/string_calculator_tests: $(test_obj)     gcc -o $@ $^ `pkg-config --cflags --libs check`  $(test_obj): $(test_src) $(src)     gcc -c -o $@ $^ `pkg-config --cflags --libs check`

any appreciated.

it's little unclear how want makefile behave, can take in stages.

look @ rule:

$(test_obj): $(test_src) $(src)     gcc -c -o $@ $^ `pkg-config --cflags --libs check`

each object built out of all source files. , don't seem have rule obj. let's replace 2 static pattern rules:

$(test_obj): $(test_build_dir)/%.o : $(test_src_dir)/%.c     gcc -c -o $@ $< `pkg-config --cflags --libs check`  $(obj): $(build_dir)/%.o : $(src_dir)/%.c     gcc -c -o $@ $< `pkg-config --cflags --libs check`

then rule build executable pair of object files:

tests = $(patsubst $(src_dir)/%.c, $(test_build_dir)/%_test, $(src))  $(tests): $(test_build_dir)/%_test : $(build_dir)/%.o $(test_build_dir)/%_tests.o     gcc -o $@ $^ `pkg-config --cflags --libs check`

then rule build tests:

.phony: all_tests  all_tests: $(tests)

that should enough started. once works, there many possible improvements, such targets run tests, , tidier ways write tests using advanced techniques vpath. , haven't talked header files , dependency handling...


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