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1#
2# Makefile for musl (requires GNU make)
3#
4# This is how simple every makefile should be...
5# No, I take that back - actually most should be less than half this size.
6#
7# Use config.mak to override any of the following variables.
8# Do not make changes here.
9#
10
11srcdir = .
12exec_prefix = /usr/local
13bindir = $(exec_prefix)/bin
14
15prefix = /usr/local/musl
16includedir = $(prefix)/include
17libdir = $(prefix)/lib
18syslibdir = /lib
19
20SRC_DIRS = $(addprefix $(srcdir)/,src/* crt ldso $(COMPAT_SRC_DIRS))
21BASE_GLOBS = $(addsuffix /*.c,$(SRC_DIRS))
22ARCH_GLOBS = $(addsuffix /$(ARCH)/*.[csS],$(SRC_DIRS))
23BASE_SRCS = $(sort $(wildcard $(BASE_GLOBS)))
24ARCH_SRCS = $(sort $(wildcard $(ARCH_GLOBS)))
25BASE_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(BASE_SRCS)))
26ARCH_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(ARCH_SRCS)))
27REPLACED_OBJS = $(sort $(subst /$(ARCH)/,/,$(ARCH_OBJS)))
28ALL_OBJS = $(addprefix obj/, $(filter-out $(REPLACED_OBJS), $(sort $(BASE_OBJS) $(ARCH_OBJS))))
29
30LIBC_OBJS = $(filter obj/src/%,$(ALL_OBJS)) $(filter obj/compat/%,$(ALL_OBJS))
31LDSO_OBJS = $(filter obj/ldso/%,$(ALL_OBJS:%.o=%.lo))
32CRT_OBJS = $(filter obj/crt/%,$(ALL_OBJS))
33
34AOBJS = $(LIBC_OBJS)
35LOBJS = $(LIBC_OBJS:.o=.lo)
36GENH = obj/include/bits/alltypes.h obj/include/bits/syscall.h
37GENH_INT = obj/src/internal/version.h
38IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/locale_impl.h src/internal/libc.h)
39
40LDFLAGS =
41LDFLAGS_AUTO =
42LIBCC = -lgcc
43CPPFLAGS =
44CFLAGS =
45CFLAGS_AUTO = -Os -pipe
46CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
47
48CFLAGS_ALL = $(CFLAGS_C99FSE)
49CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -I$(srcdir)/arch/generic -Iobj/src/internal -I$(srcdir)/src/include -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
50CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
51
52LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
53
54AR      = $(CROSS_COMPILE)ar
55RANLIB  = $(CROSS_COMPILE)ranlib
56INSTALL = $(srcdir)/tools/install.sh
57
58ARCH_INCLUDES = $(wildcard $(srcdir)/arch/$(ARCH)/bits/*.h)
59GENERIC_INCLUDES = $(wildcard $(srcdir)/arch/generic/bits/*.h)
60INCLUDES = $(wildcard $(srcdir)/include/*.h $(srcdir)/include/*/*.h)
61ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%) $(GENERIC_INCLUDES:$(srcdir)/arch/generic/%=include/%))
62
63EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
64EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
65CRT_LIBS = $(addprefix lib/,$(notdir $(CRT_OBJS)))
66STATIC_LIBS = lib/libc.a
67SHARED_LIBS = lib/libc.so
68TOOL_LIBS = lib/musl-gcc.specs
69ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
70ALL_TOOLS = obj/musl-gcc
71
72WRAPCC_GCC = gcc
73WRAPCC_CLANG = clang
74
75LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
76
77-include config.mak
78-include $(srcdir)/arch/$(ARCH)/arch.mak
79
80ifeq ($(ARCH),)
81
82all:
83	@echo "Please set ARCH in config.mak before running make."
84	@exit 1
85
86else
87
88all: $(ALL_LIBS) $(ALL_TOOLS)
89
90OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(GENH) $(GENH_INT))) obj/include)
91
92$(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(ALL_OBJS:%.o=%.lo) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
93
94$(OBJ_DIRS):
95	mkdir -p $@
96
97obj/include/bits/alltypes.h: $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in $(srcdir)/tools/mkalltypes.sed
98	sed -f $(srcdir)/tools/mkalltypes.sed $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in > $@
99
100obj/include/bits/syscall.h: $(srcdir)/arch/$(ARCH)/bits/syscall.h.in
101	cp $< $@
102	sed -n -e s/__NR_/SYS_/p < $< >> $@
103
104obj/src/internal/version.h: $(wildcard $(srcdir)/VERSION $(srcdir)/.git)
105	printf '#define VERSION "%s"\n' "$$(cd $(srcdir); sh tools/version.sh)" > $@
106
107obj/src/internal/version.o obj/src/internal/version.lo: obj/src/internal/version.h
108
109obj/crt/rcrt1.o obj/ldso/dlstart.lo obj/ldso/dynlink.lo: $(srcdir)/src/internal/dynlink.h $(srcdir)/arch/$(ARCH)/reloc.h
110
111obj/crt/crt1.o obj/crt/scrt1.o obj/crt/rcrt1.o obj/ldso/dlstart.lo: $(srcdir)/arch/$(ARCH)/crt_arch.h
112
113obj/crt/rcrt1.o: $(srcdir)/ldso/dlstart.c
114
115obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
116
117OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
118$(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
119
120MEMOPS_OBJS = $(filter %/memcpy.o %/memmove.o %/memcmp.o %/memset.o, $(LIBC_OBJS))
121$(MEMOPS_OBJS) $(MEMOPS_OBJS:%.o=%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
122
123NOSSP_OBJS = $(CRT_OBJS) $(LDSO_OBJS) $(filter \
124	%/__libc_start_main.o %/__init_tls.o %/__stack_chk_fail.o \
125	%/__set_thread_area.o %/memset.o %/memcpy.o \
126	, $(LIBC_OBJS))
127$(NOSSP_OBJS) $(NOSSP_OBJS:%.o=%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
128
129$(CRT_OBJS): CFLAGS_ALL += -DCRT
130
131$(LOBJS) $(LDSO_OBJS): CFLAGS_ALL += -fPIC
132
133CC_CMD = $(CC) $(CFLAGS_ALL) -c -o $@ $<
134
135# Choose invocation of assembler to be used
136ifeq ($(ADD_CFI),yes)
137	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 $@ -
138else
139	AS_CMD = $(CC_CMD)
140endif
141
142obj/%.o: $(srcdir)/%.s
143	$(AS_CMD)
144
145obj/%.o: $(srcdir)/%.S
146	$(CC_CMD)
147
148obj/%.o: $(srcdir)/%.c $(GENH) $(IMPH)
149	$(CC_CMD)
150
151obj/%.lo: $(srcdir)/%.s
152	$(AS_CMD)
153
154obj/%.lo: $(srcdir)/%.S
155	$(CC_CMD)
156
157obj/%.lo: $(srcdir)/%.c $(GENH) $(IMPH)
158	$(CC_CMD)
159
160lib/libc.so: $(LOBJS) $(LDSO_OBJS)
161	$(CC) $(CFLAGS_ALL) $(LDFLAGS_ALL) -nostdlib -shared \
162	-Wl,-e,_dlstart -o $@ $(LOBJS) $(LDSO_OBJS) $(LIBCC)
163
164lib/libc.a: $(AOBJS)
165	rm -f $@
166	$(AR) rc $@ $(AOBJS)
167	$(RANLIB) $@
168
169$(EMPTY_LIBS):
170	rm -f $@
171	$(AR) rc $@
172
173lib/%.o: obj/crt/$(ARCH)/%.o
174	cp $< $@
175
176lib/%.o: obj/crt/%.o
177	cp $< $@
178
179lib/musl-gcc.specs: $(srcdir)/tools/musl-gcc.specs.sh config.mak
180	sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
181
182obj/musl-gcc: config.mak
183	printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
184	chmod +x $@
185
186obj/%-clang: $(srcdir)/tools/%-clang.in config.mak
187	sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
188	chmod +x $@
189
190$(DESTDIR)$(bindir)/%: obj/%
191	$(INSTALL) -D $< $@
192
193$(DESTDIR)$(libdir)/%.so: lib/%.so
194	$(INSTALL) -D -m 755 $< $@
195
196$(DESTDIR)$(libdir)/%: lib/%
197	$(INSTALL) -D -m 644 $< $@
198
199$(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
200	$(INSTALL) -D -m 644 $< $@
201
202$(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/generic/bits/%
203	$(INSTALL) -D -m 644 $< $@
204
205$(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
206	$(INSTALL) -D -m 644 $< $@
207
208$(DESTDIR)$(includedir)/%: $(srcdir)/include/%
209	$(INSTALL) -D -m 644 $< $@
210
211$(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
212	$(INSTALL) -D -r $(DESTDIR)$(libdir)/libc.so $@ || true
213
214install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
215
216install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
217
218install-tools: $(ALL_TOOLS:obj/%=$(DESTDIR)$(bindir)/%)
219
220install: install-libs install-headers install-tools
221
222musl-git-%.tar.gz: .git
223	 git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
224
225musl-%.tar.gz: .git
226	 git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
227
228endif
229
230clean:
231	rm -rf obj lib
232
233distclean: clean
234	rm -f config.mak
235
236.PHONY: all clean install install-libs install-headers install-tools
237