esoteric_cpp-cheat/shared-library/basic/Makefile at master · mycppfeed/esoteric_cpp-cheat

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CC := gcc -pedantic-errors -std=c89 -Wall -Wextra

.PHONY: all clean run

all: maina.out mainso.out mainso_fullpath.out

run: all

./maina.out

LD_LIBRARY_PATH=. ./mainso.out

./mainso_fullpath.out

mainso.out: main.o libcirosantilli_ab.so

@# Will look for lib with basename *exactly* `libcirosantilli_ab.so`,

@# `libcirosantilli_ab.so.1` will not do!

$(CC) -L'.' main.o -o mainso.out -lcirosantilli_ab

@# With ':' uses full basename.

@# Only works for basename, not absolute path.

@# Application: select an specific version such as `libcirosantilli_ab.so.1`

@##$(CC) -L"." main.o -o mainso.out -l:libcirosantilli_ab.so

@#env LIBRARY_PATH=$LIBRARY_PATH:. $(CC) main.c -o mainso.out -lcirosantilli_ab

@# TODO how to use rpath?

@#$(CC) -Wl,-rpath,. main.o -o mainso.out -lcirosantilli_ab

# This is not recommended.

# Better use linker path as in mainso.out.

# readout -d shows that the ouptut stores the full path.

mainso_fullpath.out: main.o libcirosantilli_ab.so

$(CC) main.o '$(shell printf "`pwd`/libcirosantilli_ab.so")' -o mainso_fullpath.out

@# Does not work

@#$(CC) main.o -o mainso_fullpath.out -l"$(shell realpath libcirosantilli_ab.so)"

maina.out: main.o ab.a

$(CC) main.o ab.a -o maina.out

libcirosantilli_ab.so: a.o b.o

$(CC) -shared a.o b.o -o libcirosantilli_ab.so

@# Same?

@#$(CC) -shared -Wl,-soname,libcirosantilli_ab.so a.o b.o -o libcirosantilli_ab.so

ab.a: a.o b.o

ar rcs ab.a a.o b.o

%.o: %.c

$(CC) -fPIC -c '$<' -o '$@'

clean:

rm -rf *.o *.a *.so *.out