nsz Git - musl/blob - 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 exec_prefix = /usr/local
  12 bindir = $(exec_prefix)/bin
  13
  14 prefix = /usr/local/musl
  15 includedir = $(prefix)/include
  16 libdir = $(prefix)/lib
  17 syslibdir = /lib
  18
  19 SRCS = $(sort $(wildcard src/*/*.c))
  20 OBJS = $(SRCS:.c=.o)
  21 LOBJS = $(OBJS:.o=.lo)
  22 GENH = include/bits/alltypes.h
  23
  24 LDFLAGS =
  25 CPPFLAGS =
  26 CFLAGS = -Os -pipe
  27 CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
  28
  29 CFLAGS_ALL = $(CFLAGS_C99FSE)
  30 CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I./src/internal -I./include -I./arch/$(ARCH)
  31 CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS)
  32 CFLAGS_ALL_STATIC = $(CFLAGS_ALL)
  33 CFLAGS_ALL_SHARED = $(CFLAGS_ALL) -fPIC -DSHARED -O3
  34
  35 AR      = $(CROSS_COMPILE)ar
  36 RANLIB  = $(CROSS_COMPILE)ranlib
  37
  38 ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH))
  39
  40 EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
  41 EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
  42 CRT_LIBS = lib/crt1.o lib/crti.o lib/crtn.o
  43 STATIC_LIBS = lib/libc.a
  44 SHARED_LIBS = lib/libc.so
  45 TOOL_LIBS = lib/musl-gcc.specs
  46 ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
  47 ALL_TOOLS = tools/musl-gcc
  48
  49 LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH).so.1
  50
  51 -include config.mak
  52
  53 all: $(ALL_LIBS) $(ALL_TOOLS)
  54
  55 install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%) $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
  56
  57 clean:
  58         rm -f crt/*.o
  59         rm -f $(OBJS)
  60         rm -f $(LOBJS)
  61         rm -f $(ALL_LIBS) lib/*.[ao] lib/*.so
  62         rm -f $(ALL_TOOLS)
  63         rm -f $(GENH)
  64         rm -f include/bits
  65
  66 distclean: clean
  67         rm -f config.mak
  68
  69 include/bits:
  70         @test "$(ARCH)" || { echo "Please set ARCH in config.mak before running make." ; exit 1 ; }
  71         ln -sf ../arch/$(ARCH)/bits $@
  72
  73 include/bits/alltypes.h.sh: include/bits
  74
  75 include/bits/alltypes.h: include/bits/alltypes.h.sh
  76         sh $< > $@
  77
  78 %.o: $(ARCH)/%.s
  79         $(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $<
  80
  81 %.o: %.c $(GENH)
  82         $(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $<
  83
  84 %.lo: $(ARCH)/%.s
  85         $(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
  86
  87 %.lo: %.c $(GENH)
  88         $(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
  89
  90 lib/libc.so: $(LOBJS)
  91         $(CC) $(CFLAGS_ALL_SHARED) $(LDFLAGS) -nostdlib -shared \
  92         -Wl,-e,_start -Wl,-Bsymbolic-functions \
  93         -Wl,-soname=libc.so -o $@ $(LOBJS) -lgcc
  94
  95 lib/libc.a: $(OBJS)
  96         rm -f $@
  97         $(AR) rc $@ $(OBJS)
  98         $(RANLIB) $@
  99
 100 $(EMPTY_LIBS):
 101         rm -f $@
 102         $(AR) rc $@
 103
 104 lib/%.o: crt/%.o
 105         cp $< $@
 106
 107 lib/musl-gcc.specs: tools/musl-gcc.specs.sh config.mak
 108         sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
 109
 110 tools/musl-gcc: config.mak
 111         printf '#!/bin/sh\nexec gcc "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
 112         chmod +x $@
 113
 114 $(DESTDIR)$(bindir)/%: tools/%
 115         install -D $< $@
 116
 117 $(DESTDIR)$(libdir)/%.so: lib/%.so
 118         install -D -m 755 $< $@
 119
 120 $(DESTDIR)$(libdir)/%: lib/%
 121         install -D -m 644 $< $@
 122
 123 $(DESTDIR)$(includedir)/%: include/%
 124         install -D -m 644 $< $@
 125
 126 $(DESTDIR)$(LDSO_PATHNAME): lib/libc.so
 127         install -d -m 755 $(DESTDIR)$(syslibdir) || true
 128         ln -sf $(libdir)/libc.so $@ || true
 129
 130 .PRECIOUS: $(CRT_LIBS:lib/%=crt/%)
 131
 132 .PHONY: all clean install