mirror of
git://git.musl-libc.org/musl
synced 2024-12-15 03:05:15 +00:00
d18cf76d73
this functionality is affected by GNU make bug #30653, "intermediate
files incorrectly pruned in parallel builds". on affected versions of
make, parallel builds attempt to compile source files before
alltypes.h is generated.
as noted with commit a91ebdcfac, which
added the use of .SECONDARY, suppression of removal of "intermediate"
files does not seem to be needed at present. if it is needed in the
future, it should be achievable by explicitly mentioning their names
as targets or prerequisites.
207 lines
6.1 KiB
Makefile
207 lines
6.1 KiB
Makefile
#
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# Makefile for musl (requires GNU make)
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#
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# This is how simple every makefile should be...
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# No, I take that back - actually most should be less than half this size.
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#
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# Use config.mak to override any of the following variables.
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# Do not make changes here.
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#
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exec_prefix = /usr/local
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bindir = $(exec_prefix)/bin
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prefix = /usr/local/musl
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includedir = $(prefix)/include
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libdir = $(prefix)/lib
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syslibdir = /lib
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SRCS = $(sort $(wildcard src/*/*.c arch/$(ARCH)/src/*.c))
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OBJS = $(SRCS:.c=.o)
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LOBJS = $(OBJS:.o=.lo)
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GENH = include/bits/alltypes.h
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GENH_INT = src/internal/version.h
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IMPH = src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h
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LDFLAGS =
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LIBCC = -lgcc
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CPPFLAGS =
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CFLAGS = -Os -pipe
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CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
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CFLAGS_ALL = $(CFLAGS_C99FSE)
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CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I./arch/$(ARCH) -I./src/internal -I./include
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CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS)
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CFLAGS_ALL_STATIC = $(CFLAGS_ALL)
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CFLAGS_ALL_SHARED = $(CFLAGS_ALL) -fPIC -DSHARED
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AR = $(CROSS_COMPILE)ar
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RANLIB = $(CROSS_COMPILE)ranlib
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INSTALL = ./tools/install.sh
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ARCH_INCLUDES = $(wildcard arch/$(ARCH)/bits/*.h)
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ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH) $(ARCH_INCLUDES:arch/$(ARCH)/%=include/%))
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EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
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EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
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CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/rcrt1.o lib/crti.o lib/crtn.o
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STATIC_LIBS = lib/libc.a
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SHARED_LIBS = lib/libc.so
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TOOL_LIBS = lib/musl-gcc.specs
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ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
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ALL_TOOLS = tools/musl-gcc
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WRAPCC_GCC = gcc
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WRAPCC_CLANG = clang
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LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
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-include config.mak
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all: $(ALL_LIBS) $(ALL_TOOLS)
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install: install-libs install-headers install-tools
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clean:
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rm -f crt/*.o
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rm -f $(OBJS)
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rm -f $(LOBJS)
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rm -f $(ALL_LIBS) lib/*.[ao] lib/*.so
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rm -f $(ALL_TOOLS)
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rm -f $(GENH) $(GENH_INT)
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rm -f include/bits
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distclean: clean
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rm -f config.mak
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include/bits:
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@test "$(ARCH)" || { echo "Please set ARCH in config.mak before running make." ; exit 1 ; }
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ln -sf ../arch/$(ARCH)/bits $@
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include/bits/alltypes.h.in: include/bits
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include/bits/alltypes.h: include/bits/alltypes.h.in include/alltypes.h.in tools/mkalltypes.sed
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sed -f tools/mkalltypes.sed include/bits/alltypes.h.in include/alltypes.h.in > $@
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src/internal/version.h: $(wildcard VERSION .git)
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printf '#define VERSION "%s"\n' "$$(sh tools/version.sh)" > $@
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src/internal/version.lo: src/internal/version.h
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crt/rcrt1.o src/ldso/dlstart.lo src/ldso/dynlink.lo: src/internal/dynlink.h arch/$(ARCH)/reloc.h
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crt/crt1.o crt/Scrt1.o crt/rcrt1.o src/ldso/dlstart.lo: $(wildcard arch/$(ARCH)/crt_arch.h)
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crt/rcrt1.o: src/ldso/dlstart.c
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crt/Scrt1.o crt/rcrt1.o: CFLAGS += -fPIC
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OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=src/%))
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$(OPTIMIZE_SRCS:%.c=%.o) $(OPTIMIZE_SRCS:%.c=%.lo): CFLAGS += -O3
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MEMOPS_SRCS = src/string/memcpy.c src/string/memmove.c src/string/memcmp.c src/string/memset.c
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$(MEMOPS_SRCS:%.c=%.o) $(MEMOPS_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_MEMOPS)
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NOSSP_SRCS = $(wildcard crt/*.c) \
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src/env/__libc_start_main.c src/env/__init_tls.c \
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src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
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src/string/memset.c src/string/memcpy.c \
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src/ldso/dlstart.c src/ldso/dynlink.c
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$(NOSSP_SRCS:%.c=%.o) $(NOSSP_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_NOSSP)
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$(CRT_LIBS:lib/%=crt/%): CFLAGS += -DCRT
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# This incantation ensures that changes to any subarch asm files will
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# force the corresponding object file to be rebuilt, even if the implicit
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# rule below goes indirectly through a .sub file.
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define mkasmdep
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$(dir $(patsubst %/,%,$(dir $(1))))$(notdir $(1:.s=.o)): $(1)
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endef
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$(foreach s,$(wildcard src/*/$(ARCH)*/*.s),$(eval $(call mkasmdep,$(s))))
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# Choose invocation of assembler to be used
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# $(1) is input file, $(2) is output file, $(3) is assembler flags
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ifeq ($(ADD_CFI),yes)
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AS_CMD = LC_ALL=C awk -f tools/add-cfi.$(ARCH).awk $< | $(CC) -x assembler -c -o $@ -
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else
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AS_CMD = $(CC) -c -o $@ $<
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endif
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%.o: $(ARCH)$(ASMSUBARCH)/%.sub
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$(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $(dir $<)$(shell cat $<)
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%.o: $(ARCH)/%.s
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$(AS_CMD) $(CFLAGS_ALL_STATIC)
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%.o: %.c $(GENH) $(IMPH)
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$(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $<
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%.lo: $(ARCH)$(ASMSUBARCH)/%.sub
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$(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $(dir $<)$(shell cat $<)
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%.lo: $(ARCH)/%.s
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$(AS_CMD) $(CFLAGS_ALL_SHARED)
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%.lo: %.c $(GENH) $(IMPH)
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$(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
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lib/libc.so: $(LOBJS)
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$(CC) $(CFLAGS_ALL_SHARED) $(LDFLAGS) -nostdlib -shared \
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-Wl,-e,_dlstart -Wl,-Bsymbolic-functions \
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-o $@ $(LOBJS) $(LIBCC)
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lib/libc.a: $(OBJS)
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rm -f $@
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$(AR) rc $@ $(OBJS)
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$(RANLIB) $@
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$(EMPTY_LIBS):
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rm -f $@
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$(AR) rc $@
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lib/%.o: crt/%.o
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cp $< $@
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lib/musl-gcc.specs: tools/musl-gcc.specs.sh config.mak
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sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
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tools/musl-gcc: config.mak
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printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
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chmod +x $@
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tools/%-clang: tools/%-clang.in config.mak
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sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
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chmod +x $@
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$(DESTDIR)$(bindir)/%: tools/%
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$(INSTALL) -D $< $@
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$(DESTDIR)$(libdir)/%.so: lib/%.so
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$(INSTALL) -D -m 755 $< $@
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$(DESTDIR)$(libdir)/%: lib/%
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$(INSTALL) -D -m 644 $< $@
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$(DESTDIR)$(includedir)/bits/%: arch/$(ARCH)/bits/%
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$(INSTALL) -D -m 644 $< $@
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$(DESTDIR)$(includedir)/%: include/%
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$(INSTALL) -D -m 644 $< $@
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$(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
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$(INSTALL) -D -l $(libdir)/libc.so $@ || true
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install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
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install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
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install-tools: $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%)
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musl-git-%.tar.gz: .git
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git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
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musl-%.tar.gz: .git
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git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
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.PHONY: all clean install install-libs install-headers install-tools
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