Makefile

   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
  11 srcdir = .
  12 exec_prefix = /usr/local
  13 bindir = $(exec_prefix)/bin
  14
  15 prefix = /usr/local/musl
  16 includedir = $(prefix)/include
  17 libdir = $(prefix)/lib
  18 syslibdir = /lib
  19
  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 OBJS = $(addprefix obj/, $(filter-out $(REPLACED_OBJS), $(sort $(BASE_OBJS) $(ARCH_OBJS))))
  26 LOBJS = $(OBJS:.o=.lo)
  27 GENH = obj/include/bits/alltypes.h
  28 GENH_INT = obj/src/internal/version.h
  29 IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h)
  30
  31 LDFLAGS =
  32 LDFLAGS_AUTO =
  33 LIBCC = -lgcc
  34 CPPFLAGS =
  35 CFLAGS =
  36 CFLAGS_AUTO = -Os -pipe
  37 CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
  38
  39 CFLAGS_ALL = $(CFLAGS_C99FSE)
  40 CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -Iobj/src/internal -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
  41 CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
  42
  43 LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
  44
  45 AR      = $(CROSS_COMPILE)ar
  46 RANLIB  = $(CROSS_COMPILE)ranlib
  47 INSTALL = $(srcdir)/tools/install.sh
  48
  49 ARCH_INCLUDES = $(wildcard $(srcdir)/arch/$(ARCH)/bits/*.h)
  50 INCLUDES = $(wildcard $(srcdir)/include/*.h $(srcdir)/include/*/*.h)
  51 ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%))
  52
  53 EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
  54 EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
  55 CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/rcrt1.o lib/crti.o lib/crtn.o
  56 STATIC_LIBS = lib/libc.a
  57 SHARED_LIBS = lib/libc.so
  58 TOOL_LIBS = lib/musl-gcc.specs
  59 ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
  60 ALL_TOOLS = obj/musl-gcc
  61
  62 WRAPCC_GCC = gcc
  63 WRAPCC_CLANG = clang
  64
  65 LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
  66
  67 -include config.mak
  68
  69 ifeq ($(ARCH),)
  70 $(error Please set ARCH in config.mak before running make.)
  71 endif
  72
  73 all: $(ALL_LIBS) $(ALL_TOOLS)
  74
  75 OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(OBJS) $(GENH) $(GENH_INT))) $(addprefix obj/, crt crt/$(ARCH) include))
  76
  77 $(ALL_LIBS) $(ALL_TOOLS) $(CRT_LIBS:lib/%=obj/crt/%) $(OBJS) $(LOBJS) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
  78
  79 $(OBJ_DIRS):
  80         mkdir -p $@
  81
  82 install: install-libs install-headers install-tools
  83
  84 clean:
  85         rm -rf obj lib
  86
  87 distclean: clean
  88         rm -f config.mak
  89
  90 obj/include/bits/alltypes.h: $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in $(srcdir)/tools/mkalltypes.sed
  91         sed -f $(srcdir)/tools/mkalltypes.sed $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in > $@
  92
  93 obj/src/internal/version.h: $(wildcard $(srcdir)/VERSION $(srcdir)/.git)
  94         printf '#define VERSION "%s"\n' "$$(cd $(srcdir); sh tools/version.sh)" > $@
  95
  96 obj/src/internal/version.o obj/src/internal/version.lo: obj/src/internal/version.h
  97
  98 obj/crt/rcrt1.o obj/src/ldso/dlstart.lo obj/src/ldso/dynlink.lo: $(srcdir)/src/internal/dynlink.h $(srcdir)/arch/$(ARCH)/reloc.h
  99
 100 obj/crt/crt1.o obj/crt/scrt1.o obj/crt/rcrt1.o obj/src/ldso/dlstart.lo: $(srcdir)/arch/$(ARCH)/crt_arch.h
 101
 102 obj/crt/rcrt1.o: $(srcdir)/src/ldso/dlstart.c
 103
 104 obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
 105
 106 obj/crt/$(ARCH)/crti.o: $(srcdir)/crt/$(ARCH)/crti.s
 107
 108 obj/crt/$(ARCH)/crtn.o: $(srcdir)/crt/$(ARCH)/crtn.s
 109
 110 OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
 111 $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
 112
 113 MEMOPS_SRCS = src/string/memcpy.c src/string/memmove.c src/string/memcmp.c src/string/memset.c
 114 $(MEMOPS_SRCS:%.c=obj/%.o) $(MEMOPS_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
 115
 116 NOSSP_SRCS = $(wildcard crt/*.c) \
 117         src/env/__libc_start_main.c src/env/__init_tls.c \
 118         src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
 119         src/string/memset.c src/string/memcpy.c \
 120         src/ldso/dlstart.c src/ldso/dynlink.c
 121 $(NOSSP_SRCS:%.c=obj/%.o) $(NOSSP_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
 122
 123 $(CRT_LIBS:lib/%=obj/crt/%): CFLAGS_ALL += -DCRT
 124
 125 $(LOBJS): CFLAGS_ALL += -fPIC -DSHARED
 126
 127 CC_CMD = $(CC) $(CFLAGS_ALL) -c -o $@ $<
 128
 129 # Choose invocation of assembler to be used
 130 ifeq ($(ADD_CFI),yes)
 131         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 $@ -
 132 else
 133         AS_CMD = $(CC_CMD)
 134 endif
 135
 136 obj/%.o: $(srcdir)/%.s
 137         $(AS_CMD)
 138
 139 obj/%.o: $(srcdir)/%.S
 140         $(CC_CMD)
 141
 142 obj/%.o: $(srcdir)/%.c $(GENH) $(IMPH)
 143         $(CC_CMD)
 144
 145 obj/%.lo: $(srcdir)/%.s
 146         $(AS_CMD)
 147
 148 obj/%.lo: $(srcdir)/%.S
 149         $(CC_CMD)
 150
 151 obj/%.lo: $(srcdir)/%.c $(GENH) $(IMPH)
 152         $(CC_CMD)
 153
 154 lib/libc.so: $(LOBJS)
 155         $(CC) $(CFLAGS_ALL) $(LDFLAGS_ALL) -nostdlib -shared \
 156         -Wl,-e,_dlstart -Wl,-Bsymbolic-functions \
 157         -o $@ $(LOBJS) $(LIBCC)
 158
 159 lib/libc.a: $(OBJS)
 160         rm -f $@
 161         $(AR) rc $@ $(OBJS)
 162         $(RANLIB) $@
 163
 164 $(EMPTY_LIBS):
 165         rm -f $@
 166         $(AR) rc $@
 167
 168 lib/%.o: obj/crt/%.o
 169         cp $< $@
 170
 171 lib/crti.o: obj/crt/$(ARCH)/crti.o
 172         cp $< $@
 173
 174 lib/crtn.o: obj/crt/$(ARCH)/crtn.o
 175         cp $< $@
 176
 177 lib/musl-gcc.specs: $(srcdir)/tools/musl-gcc.specs.sh config.mak
 178         sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
 179
 180 obj/musl-gcc: config.mak
 181         printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
 182         chmod +x $@
 183
 184 obj/%-clang: $(srcdir)/tools/%-clang.in config.mak
 185         sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
 186         chmod +x $@
 187
 188 $(DESTDIR)$(bindir)/%: obj/%
 189         $(INSTALL) -D $< $@
 190
 191 $(DESTDIR)$(libdir)/%.so: lib/%.so
 192         $(INSTALL) -D -m 755 $< $@
 193
 194 $(DESTDIR)$(libdir)/%: lib/%
 195         $(INSTALL) -D -m 644 $< $@
 196
 197 $(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
 198         $(INSTALL) -D -m 644 $< $@
 199
 200 $(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
 201         $(INSTALL) -D -m 644 $< $@
 202
 203 $(DESTDIR)$(includedir)/%: $(srcdir)/include/%
 204         $(INSTALL) -D -m 644 $< $@
 205
 206 $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
 207         $(INSTALL) -D -l $(libdir)/libc.so $@ || true
 208
 209 install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
 210
 211 install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
 212
 213 install-tools: $(ALL_TOOLS:obj/%=$(DESTDIR)$(bindir)/%)
 214
 215 musl-git-%.tar.gz: .git
 216          git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
 217
 218 musl-%.tar.gz: .git
 219          git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
 220
 221 .PHONY: all clean install install-libs install-headers install-tools