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 SRC_DIRS = $(addprefix $(srcdir)/,src/* crt ldso)
  21 BASE_GLOBS = $(addsuffix /*.c,$(SRC_DIRS))
  22 ARCH_GLOBS = $(addsuffix /$(ARCH)/*.[csS],$(SRC_DIRS))
  23 BASE_SRCS = $(sort $(wildcard $(BASE_GLOBS)))
  24 ARCH_SRCS = $(sort $(wildcard $(ARCH_GLOBS)))
  25 BASE_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(BASE_SRCS)))
  26 ARCH_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(ARCH_SRCS)))
  27 REPLACED_OBJS = $(sort $(subst /$(ARCH)/,/,$(ARCH_OBJS)))
  28 ALL_OBJS = $(addprefix obj/, $(filter-out $(REPLACED_OBJS), $(sort $(BASE_OBJS) $(ARCH_OBJS))))
  29
  30 LIBC_OBJS = $(filter obj/src/%,$(ALL_OBJS))
  31 LDSO_OBJS = $(filter obj/ldso/%,$(ALL_OBJS:%.o=%.lo))
  32 CRT_OBJS = $(filter obj/crt/%,$(ALL_OBJS))
  33
  34 AOBJS = $(LIBC_OBJS)
  35 LOBJS = $(LIBC_OBJS:.o=.lo)
  36 GENH = obj/include/bits/alltypes.h obj/include/bits/syscall.h
  37 GENH_INT = obj/src/internal/version.h
  38 IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/locale_impl.h src/internal/libc.h)
  39
  40 LDFLAGS =
  41 LDFLAGS_AUTO =
  42 LIBCC = -lgcc
  43 CPPFLAGS =
  44 CFLAGS =
  45 CFLAGS_AUTO = -Os -pipe
  46 CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
  47
  48 CFLAGS_ALL = $(CFLAGS_C99FSE)
  49 CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -I$(srcdir)/arch/generic -Iobj/src/internal -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
  50 CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
  51
  52 LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
  53
  54 AR      = $(CROSS_COMPILE)ar
  55 RANLIB  = $(CROSS_COMPILE)ranlib
  56 INSTALL = $(srcdir)/tools/install.sh
  57
  58 ARCH_INCLUDES = $(wildcard $(srcdir)/arch/$(ARCH)/bits/*.h)
  59 GENERIC_INCLUDES = $(wildcard $(srcdir)/arch/generic/bits/*.h)
  60 INCLUDES = $(wildcard $(srcdir)/include/*.h $(srcdir)/include/*/*.h)
  61 ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%) $(GENERIC_INCLUDES:$(srcdir)/arch/generic/%=include/%))
  62
  63 EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
  64 EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
  65 CRT_LIBS = $(addprefix lib/,$(notdir $(CRT_OBJS)))
  66 STATIC_LIBS = lib/libc.a
  67 SHARED_LIBS = lib/libc.so
  68 TOOL_LIBS = lib/musl-gcc.specs
  69 ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
  70 ALL_TOOLS = obj/musl-gcc
  71
  72 WRAPCC_GCC = gcc
  73 WRAPCC_CLANG = clang
  74
  75 LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
  76
  77 -include config.mak
  78
  79 ifeq ($(ARCH),)
  80
  81 all:
  82         @echo "Please set ARCH in config.mak before running make."
  83         @exit 1
  84
  85 else
  86
  87 all: $(ALL_LIBS) $(ALL_TOOLS)
  88
  89 OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(GENH) $(GENH_INT))) obj/include)
  90
  91 $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(ALL_OBJS:%.o=%.lo) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
  92
  93 $(OBJ_DIRS):
  94         mkdir -p $@
  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/include/bits/syscall.h: $(srcdir)/arch/$(ARCH)/bits/syscall.h.in
 100         cp $< $@
 101         sed -n -e s/__NR_/SYS_/p < $< >> $@
 102
 103 obj/src/internal/version.h: $(wildcard $(srcdir)/VERSION $(srcdir)/.git)
 104         printf '#define VERSION "%s"\n' "$$(cd $(srcdir); sh tools/version.sh)" > $@
 105
 106 obj/src/internal/version.o obj/src/internal/version.lo: obj/src/internal/version.h
 107
 108 obj/crt/rcrt1.o obj/ldso/dlstart.lo obj/ldso/dynlink.lo: $(srcdir)/src/internal/dynlink.h $(srcdir)/arch/$(ARCH)/reloc.h
 109
 110 obj/crt/crt1.o obj/crt/scrt1.o obj/crt/rcrt1.o obj/ldso/dlstart.lo: $(srcdir)/arch/$(ARCH)/crt_arch.h
 111
 112 obj/crt/rcrt1.o: $(srcdir)/ldso/dlstart.c
 113
 114 obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
 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_OBJS = $(filter %/memcpy.o %/memmove.o %/memcmp.o %/memset.o, $(LIBC_OBJS))
 120 $(MEMOPS_OBJS) $(MEMOPS_OBJS:%.o=%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
 121
 122 NOSSP_OBJS = $(CRT_OBJS) $(LDSO_OBJS) $(filter \
 123         %/__libc_start_main.o %/__init_tls.o %/__stack_chk_fail.o \
 124         %/__set_thread_area.o %/memset.o %/memcpy.o \
 125         , $(LIBC_OBJS))
 126 $(NOSSP_OBJS) $(NOSSP_OBJS:%.o=%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
 127
 128 $(CRT_OBJS): CFLAGS_ALL += -DCRT
 129
 130 $(LOBJS) $(LDSO_OBJS): CFLAGS_ALL += -fPIC
 131
 132 CC_CMD = $(CC) $(CFLAGS_ALL) -c -o $@ $<
 133
 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 $@ -
 137 else
 138         AS_CMD = $(CC_CMD)
 139 endif
 140
 141 obj/%.o: $(srcdir)/%.s
 142         $(AS_CMD)
 143
 144 obj/%.o: $(srcdir)/%.S
 145         $(CC_CMD)
 146
 147 obj/%.o: $(srcdir)/%.c $(GENH) $(IMPH)
 148         $(CC_CMD)
 149
 150 obj/%.lo: $(srcdir)/%.s
 151         $(AS_CMD)
 152
 153 obj/%.lo: $(srcdir)/%.S
 154         $(CC_CMD)
 155
 156 obj/%.lo: $(srcdir)/%.c $(GENH) $(IMPH)
 157         $(CC_CMD)
 158
 159 lib/libc.so: $(LOBJS) $(LDSO_OBJS)
 160         $(CC) $(CFLAGS_ALL) $(LDFLAGS_ALL) -nostdlib -shared \
 161         -Wl,-e,_dlstart -o $@ $(LOBJS) $(LDSO_OBJS) $(LIBCC)
 162
 163 lib/libc.a: $(AOBJS)
 164         rm -f $@
 165         $(AR) rc $@ $(AOBJS)
 166         $(RANLIB) $@
 167
 168 $(EMPTY_LIBS):
 169         rm -f $@
 170         $(AR) rc $@
 171
 172 lib/%.o: obj/crt/$(ARCH)/%.o
 173         cp $< $@
 174
 175 lib/%.o: obj/crt/%.o
 176         cp $< $@
 177
 178 lib/musl-gcc.specs: $(srcdir)/tools/musl-gcc.specs.sh config.mak
 179         sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
 180
 181 obj/musl-gcc: config.mak
 182         printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
 183         chmod +x $@
 184
 185 obj/%-clang: $(srcdir)/tools/%-clang.in config.mak
 186         sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
 187         chmod +x $@
 188
 189 $(DESTDIR)$(bindir)/%: obj/%
 190         $(INSTALL) -D $< $@
 191
 192 $(DESTDIR)$(libdir)/%.so: lib/%.so
 193         $(INSTALL) -D -m 755 $< $@
 194
 195 $(DESTDIR)$(libdir)/%: lib/%
 196         $(INSTALL) -D -m 644 $< $@
 197
 198 $(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
 199         $(INSTALL) -D -m 644 $< $@
 200
 201 $(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/generic/bits/%
 202         $(INSTALL) -D -m 644 $< $@
 203
 204 $(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
 205         $(INSTALL) -D -m 644 $< $@
 206
 207 $(DESTDIR)$(includedir)/%: $(srcdir)/include/%
 208         $(INSTALL) -D -m 644 $< $@
 209
 210 $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
 211         $(INSTALL) -D -l $(libdir)/libc.so $@ || true
 212
 213 install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
 214
 215 install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
 216
 217 install-tools: $(ALL_TOOLS:obj/%=$(DESTDIR)$(bindir)/%)
 218
 219 install: install-libs install-headers install-tools
 220
 221 musl-git-%.tar.gz: .git
 222          git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
 223
 224 musl-%.tar.gz: .git
 225          git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
 226
 227 endif
 228
 229 clean:
 230         rm -rf obj lib
 231
 232 distclean: clean
 233         rm -f config.mak
 234
 235 .PHONY: all clean install install-libs install-headers install-tools