2 # Makefile for musl (requires GNU make)
4 # This is how simple every makefile should be...
5 # No, I take that back - actually most should be less than half this size.
7 # Use config.mak to override any of the following variables.
8 # Do not make changes here.
11 exec_prefix = /usr/local
12 bindir = $(exec_prefix)/bin
14 prefix = /usr/local/musl
15 includedir = $(prefix)/include
16 libdir = $(prefix)/lib
19 SRCS = $(sort $(wildcard src/*/*.c))
21 LOBJS = $(OBJS:.o=.lo)
22 GENH = include/bits/alltypes.h
23 IMPH = src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h
28 CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
30 CFLAGS_ALL = $(CFLAGS_C99FSE)
31 CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I./src/internal -I./include -I./arch/$(ARCH)
32 CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS)
33 CFLAGS_ALL_STATIC = $(CFLAGS_ALL)
34 CFLAGS_ALL_SHARED = $(CFLAGS_ALL) -fPIC -DSHARED -O3
36 AR = $(CROSS_COMPILE)ar
37 RANLIB = $(CROSS_COMPILE)ranlib
39 ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH))
41 EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
42 EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
43 CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/crti.o lib/crtn.o
44 STATIC_LIBS = lib/libc.a
45 SHARED_LIBS = lib/libc.so
46 TOOL_LIBS = lib/musl-gcc.specs
47 ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
48 ALL_TOOLS = tools/musl-gcc
50 LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH).so.1
54 all: $(ALL_LIBS) $(ALL_TOOLS)
56 install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%) $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
62 rm -f $(ALL_LIBS) lib/*.[ao] lib/*.so
71 @test "$(ARCH)" || { echo "Please set ARCH in config.mak before running make." ; exit 1 ; }
72 ln -sf ../arch/$(ARCH)/bits $@
74 include/bits/alltypes.h.sh: include/bits
76 include/bits/alltypes.h: include/bits/alltypes.h.sh
80 $(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $<
82 %.o: %.c $(GENH) $(IMPH)
83 $(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $<
86 $(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
88 %.lo: %.c $(GENH) $(IMPH)
89 $(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
92 $(CC) $(CFLAGS_ALL_SHARED) $(LDFLAGS) -nostdlib -shared \
93 -Wl,-e,_start -Wl,-Bsymbolic-functions \
94 -Wl,-soname=libc.so -o $@ $(LOBJS) -lgcc
108 lib/musl-gcc.specs: tools/musl-gcc.specs.sh config.mak
109 sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
111 tools/musl-gcc: config.mak
112 printf '#!/bin/sh\nexec gcc "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
115 $(DESTDIR)$(bindir)/%: tools/%
118 $(DESTDIR)$(libdir)/%.so: lib/%.so
119 install -D -m 755 $< $@
121 $(DESTDIR)$(libdir)/%: lib/%
122 install -D -m 644 $< $@
124 $(DESTDIR)$(includedir)/%: include/%
125 install -D -m 644 $< $@
127 $(DESTDIR)$(LDSO_PATHNAME): lib/libc.so
128 install -d -m 755 $(DESTDIR)$(syslibdir) || true
129 ln -sf $(libdir)/libc.so $@ || true
131 .PRECIOUS: $(CRT_LIBS:lib/%=crt/%)
133 .PHONY: all clean install