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.
12 exec_prefix = /usr/local
13 bindir = $(exec_prefix)/bin
15 prefix = /usr/local/musl
16 includedir = $(prefix)/include
17 libdir = $(prefix)/lib
20 BASE_SRCS = $(sort $(wildcard $(srcdir)/src/*/*.c))
21 BASE_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(BASE_SRCS)))
22 ARCH_SRCS = $(wildcard $(srcdir)/src/*/$(ARCH)/*.[csS])
23 ARCH_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(ARCH_SRCS)))
24 REPLACED_OBJS = $(sort $(subst /$(ARCH)/,/,$(ARCH_OBJS)))
25 LDSO_SRCS = $(sort $(wildcard $(srcdir)/ldso/*.c))
26 LDSO_OBJS = $(patsubst $(srcdir)/%,obj/%.lo,$(basename $(LDSO_SRCS)))
27 OBJS = $(addprefix obj/, $(filter-out $(REPLACED_OBJS), $(sort $(BASE_OBJS) $(ARCH_OBJS))))
29 LOBJS = $(OBJS:.o=.lo)
30 GENH = obj/include/bits/alltypes.h
31 GENH_INT = obj/src/internal/version.h
32 IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h)
39 CFLAGS_AUTO = -Os -pipe
40 CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
42 CFLAGS_ALL = $(CFLAGS_C99FSE)
43 CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -Iobj/src/internal -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
44 CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
46 LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
48 AR = $(CROSS_COMPILE)ar
49 RANLIB = $(CROSS_COMPILE)ranlib
50 INSTALL = $(srcdir)/tools/install.sh
52 ARCH_INCLUDES = $(wildcard $(srcdir)/arch/$(ARCH)/bits/*.h)
53 INCLUDES = $(wildcard $(srcdir)/include/*.h $(srcdir)/include/*/*.h)
54 ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%))
56 EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
57 EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
58 CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/rcrt1.o lib/crti.o lib/crtn.o
59 STATIC_LIBS = lib/libc.a
60 SHARED_LIBS = lib/libc.so
61 TOOL_LIBS = lib/musl-gcc.specs
62 ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
63 ALL_TOOLS = obj/musl-gcc
68 LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
73 $(error Please set ARCH in config.mak before running make.)
76 all: $(ALL_LIBS) $(ALL_TOOLS)
78 OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(OBJS) $(LDSO_OBJS) $(GENH) $(GENH_INT))) $(addprefix obj/, crt crt/$(ARCH) include))
80 $(ALL_LIBS) $(ALL_TOOLS) $(CRT_LIBS:lib/%=obj/crt/%) $(OBJS) $(LOBJS) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
85 install: install-libs install-headers install-tools
93 obj/include/bits/alltypes.h: $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in $(srcdir)/tools/mkalltypes.sed
94 sed -f $(srcdir)/tools/mkalltypes.sed $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in > $@
96 obj/src/internal/version.h: $(wildcard $(srcdir)/VERSION $(srcdir)/.git)
97 printf '#define VERSION "%s"\n' "$$(cd $(srcdir); sh tools/version.sh)" > $@
99 obj/src/internal/version.o obj/src/internal/version.lo: obj/src/internal/version.h
101 obj/crt/rcrt1.o obj/ldso/dlstart.lo obj/ldso/dynlink.lo: $(srcdir)/src/internal/dynlink.h $(srcdir)/arch/$(ARCH)/reloc.h
103 obj/crt/crt1.o obj/crt/scrt1.o obj/crt/rcrt1.o obj/ldso/dlstart.lo: $(srcdir)/arch/$(ARCH)/crt_arch.h
105 obj/crt/rcrt1.o: $(srcdir)/ldso/dlstart.c
107 obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
109 obj/crt/$(ARCH)/crti.o: $(srcdir)/crt/$(ARCH)/crti.s
111 obj/crt/$(ARCH)/crtn.o: $(srcdir)/crt/$(ARCH)/crtn.s
113 OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
114 $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
116 MEMOPS_SRCS = src/string/memcpy.c src/string/memmove.c src/string/memcmp.c src/string/memset.c
117 $(MEMOPS_SRCS:%.c=obj/%.o) $(MEMOPS_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
119 NOSSP_SRCS = $(wildcard crt/*.c) \
120 src/env/__libc_start_main.c src/env/__init_tls.c \
121 src/env/__stack_chk_fail.c \
122 src/thread/__set_thread_area.c src/thread/$(ARCH)/__set_thread_area.c \
123 src/string/memset.c src/string/$(ARCH)/memset.c \
124 src/string/memcpy.c src/string/$(ARCH)/memcpy.c \
125 ldso/dlstart.c ldso/dynlink.c
126 $(NOSSP_SRCS:%.c=obj/%.o) $(NOSSP_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
128 $(CRT_LIBS:lib/%=obj/crt/%): CFLAGS_ALL += -DCRT
130 $(LOBJS) $(LDSO_OBJS): CFLAGS_ALL += -fPIC
132 CC_CMD = $(CC) $(CFLAGS_ALL) -c -o $@ $<
134 # Choose invocation of assembler to be used
135 ifeq ($(ADD_CFI),yes)
136 AS_CMD = LC_ALL=C awk -f $(srcdir)/tools/add-cfi.common.awk -f $(srcdir)/tools/add-cfi.$(ARCH).awk $< | $(CC) $(CFLAGS_ALL) -x assembler -c -o $@ -
141 obj/%.o: $(srcdir)/%.s
144 obj/%.o: $(srcdir)/%.S
147 obj/%.o: $(srcdir)/%.c $(GENH) $(IMPH)
150 obj/%.lo: $(srcdir)/%.s
153 obj/%.lo: $(srcdir)/%.S
156 obj/%.lo: $(srcdir)/%.c $(GENH) $(IMPH)
159 lib/libc.so: $(LOBJS) $(LDSO_OBJS)
160 $(CC) $(CFLAGS_ALL) $(LDFLAGS_ALL) -nostdlib -shared \
161 -Wl,-e,_dlstart -Wl,-Bsymbolic-functions \
162 -o $@ $(LOBJS) $(LDSO_OBJS) $(LIBCC)
176 lib/crti.o: obj/crt/$(ARCH)/crti.o
179 lib/crtn.o: obj/crt/$(ARCH)/crtn.o
182 lib/musl-gcc.specs: $(srcdir)/tools/musl-gcc.specs.sh config.mak
183 sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
185 obj/musl-gcc: config.mak
186 printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
189 obj/%-clang: $(srcdir)/tools/%-clang.in config.mak
190 sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
193 $(DESTDIR)$(bindir)/%: obj/%
196 $(DESTDIR)$(libdir)/%.so: lib/%.so
197 $(INSTALL) -D -m 755 $< $@
199 $(DESTDIR)$(libdir)/%: lib/%
200 $(INSTALL) -D -m 644 $< $@
202 $(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
203 $(INSTALL) -D -m 644 $< $@
205 $(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
206 $(INSTALL) -D -m 644 $< $@
208 $(DESTDIR)$(includedir)/%: $(srcdir)/include/%
209 $(INSTALL) -D -m 644 $< $@
211 $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
212 $(INSTALL) -D -l $(libdir)/libc.so $@ || true
214 install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
216 install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
218 install-tools: $(ALL_TOOLS:obj/%=$(DESTDIR)$(bindir)/%)
220 musl-git-%.tar.gz: .git
221 git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
224 git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
226 .PHONY: all clean install install-libs install-headers install-tools