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 $(srcdir)/arch/$(ARCH)/src/*.c))
  21 BASE_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(BASE_SRCS)))
  22 ARCH_SRCS = $(wildcard $(srcdir)/src/*/$(ARCH)/*.[csS] $(srcdir)/src/*/$(ARCH)$(ASMSUBARCH)/*.sub)
  23 ARCH_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(ARCH_SRCS)))
  24 REPLACED_OBJS = $(sort $(subst /$(ARCH)$(ASMSUBARCH)/,/,$(subst /$(ARCH)/,/,$(ARCH_OBJS))) $(subst /$(ARCH)$(ASMSUBARCH)/,/$(ARCH)/,$(subst /$(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 $@
  81
  82 install: install-libs install-headers install-tools
  83
  84 clean:
  85         rm -f obj/crt/*.o obj/crt/$(ARCH)/*.o
  86         rm -f $(OBJS)
  87         rm -f $(LOBJS)
  88         rm -f $(ALL_LIBS) lib/*.[ao] lib/*.so
  89         rm -f $(ALL_TOOLS)
  90         rm -f $(GENH) $(GENH_INT)
  91         rm -f obj/include/bits/alltypes.h
  92
  93 distclean: clean
  94         rm -f config.mak
  95
  96 obj/include/bits/alltypes.h: $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in $(srcdir)/tools/mkalltypes.sed
  97         sed -f $(srcdir)/tools/mkalltypes.sed $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in > $@
  98
  99 obj/src/internal/version.h: $(wildcard $(srcdir)/VERSION $(srcdir)/.git)
 100         printf '#define VERSION "%s"\n' "$$(cd $(srcdir); sh tools/version.sh)" > $@
 101
 102 obj/src/internal/version.o obj/src/internal/version.lo: obj/src/internal/version.h
 103
 104 obj/crt/rcrt1.o obj/src/ldso/dlstart.lo obj/src/ldso/dynlink.lo: $(srcdir)/src/internal/dynlink.h $(srcdir)/arch/$(ARCH)/reloc.h
 105
 106 obj/crt/crt1.o obj/crt/scrt1.o obj/crt/rcrt1.o obj/src/ldso/dlstart.lo: $(srcdir)/arch/$(ARCH)/crt_arch.h
 107
 108 obj/crt/rcrt1.o: $(srcdir)/src/ldso/dlstart.c
 109
 110 obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
 111
 112 obj/crt/$(ARCH)/crti.o: $(srcdir)/crt/$(ARCH)/crti.s
 113
 114 obj/crt/$(ARCH)/crtn.o: $(srcdir)/crt/$(ARCH)/crtn.s
 115
 116 OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
 117 $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
 118
 119 MEMOPS_SRCS = src/string/memcpy.c src/string/memmove.c src/string/memcmp.c src/string/memset.c
 120 $(MEMOPS_SRCS:%.c=obj/%.o) $(MEMOPS_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
 121
 122 NOSSP_SRCS = $(wildcard crt/*.c) \
 123         src/env/__libc_start_main.c src/env/__init_tls.c \
 124         src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
 125         src/string/memset.c src/string/memcpy.c \
 126         src/ldso/dlstart.c src/ldso/dynlink.c
 127 $(NOSSP_SRCS:%.c=obj/%.o) $(NOSSP_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
 128
 129 $(CRT_LIBS:lib/%=obj/crt/%): CFLAGS_ALL += -DCRT
 130
 131 # This incantation ensures that changes to any subarch asm files will
 132 # force the corresponding object file to be rebuilt, even if the implicit
 133 # rule below goes indirectly through a .sub file.
 134 define mkasmdep
 135 $(patsubst $(srcdir)/%,obj/%,$(dir $(patsubst %/,%,$(dir $(1))))$(ARCH)$(ASMSUBARCH)/$(notdir $(1:.s=.o))): $(1)
 136 endef
 137 $(foreach s,$(wildcard $(srcdir)/src/*/$(ARCH)*/*.s),$(eval $(call mkasmdep,$(s))))
 138
 139 $(LOBJS): CFLAGS_ALL += -fPIC -DSHARED
 140
 141 # Choose invocation of assembler to be used
 142 # $(1) is input file, $(2) is output file, $(3) is assembler flags
 143 ifeq ($(ADD_CFI),yes)
 144         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 $@ -
 145 else
 146         AS_CMD = $(CC) $(CFLAGS_ALL) -c -o $@ $<
 147 endif
 148
 149 obj/%.o: $(srcdir)/%.sub
 150         $(CC) $(CFLAGS_ALL) -c -o $@ $(dir $<)$$(cat $<)
 151
 152 obj/%.o: $(srcdir)/%.s
 153         $(AS_CMD) $(CFLAGS_ALL)
 154
 155 obj/%.o: $(srcdir)/%.S
 156         $(CC) $(CFLAGS_ALL) -c -o $@ $<
 157
 158 obj/%.o: $(srcdir)/%.c $(GENH) $(IMPH)
 159         $(CC) $(CFLAGS_ALL) -c -o $@ $<
 160
 161 obj/%.lo: $(srcdir)/%.sub
 162         $(CC) $(CFLAGS_ALL) -c -o $@ $(dir $<)$$(cat $<)
 163
 164 obj/%.lo: $(srcdir)/%.s
 165         $(AS_CMD) $(CFLAGS_ALL)
 166
 167 obj/%.lo: $(srcdir)/%.S
 168         $(CC) $(CFLAGS_ALL) -c -o $@ $<
 169
 170 obj/%.lo: $(srcdir)/%.c $(GENH) $(IMPH)
 171         $(CC) $(CFLAGS_ALL) -c -o $@ $<
 172
 173 lib/libc.so: $(LOBJS)
 174         $(CC) $(CFLAGS_ALL) $(LDFLAGS_ALL) -nostdlib -shared \
 175         -Wl,-e,_dlstart -Wl,-Bsymbolic-functions \
 176         -o $@ $(LOBJS) $(LIBCC)
 177
 178 lib/libc.a: $(OBJS)
 179         rm -f $@
 180         $(AR) rc $@ $(OBJS)
 181         $(RANLIB) $@
 182
 183 $(EMPTY_LIBS):
 184         rm -f $@
 185         $(AR) rc $@
 186
 187 lib/%.o: obj/crt/%.o
 188         cp $< $@
 189
 190 lib/crti.o: obj/crt/$(ARCH)/crti.o
 191         cp $< $@
 192
 193 lib/crtn.o: obj/crt/$(ARCH)/crtn.o
 194         cp $< $@
 195
 196 lib/musl-gcc.specs: $(srcdir)/tools/musl-gcc.specs.sh config.mak
 197         sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
 198
 199 obj/musl-gcc: config.mak
 200         printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
 201         chmod +x $@
 202
 203 obj/%-clang: $(srcdir)/tools/%-clang.in config.mak
 204         sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
 205         chmod +x $@
 206
 207 $(DESTDIR)$(bindir)/%: obj/%
 208         $(INSTALL) -D $< $@
 209
 210 $(DESTDIR)$(libdir)/%.so: lib/%.so
 211         $(INSTALL) -D -m 755 $< $@
 212
 213 $(DESTDIR)$(libdir)/%: lib/%
 214         $(INSTALL) -D -m 644 $< $@
 215
 216 $(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
 217         $(INSTALL) -D -m 644 $< $@
 218
 219 $(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
 220         $(INSTALL) -D -m 644 $< $@
 221
 222 $(DESTDIR)$(includedir)/%: $(srcdir)/include/%
 223         $(INSTALL) -D -m 644 $< $@
 224
 225 $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
 226         $(INSTALL) -D -l $(libdir)/libc.so $@ || true
 227
 228 install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
 229
 230 install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
 231
 232 install-tools: $(ALL_TOOLS:obj/%=$(DESTDIR)$(bindir)/%)
 233
 234 musl-git-%.tar.gz: .git
 235          git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
 236
 237 musl-%.tar.gz: .git
 238          git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
 239
 240 .PHONY: all clean install install-libs install-headers install-tools