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