native_client_sdk/src/tools/host_gcc.mk

   1 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 #
   6 # GNU Make based build file.  For details on GNU Make see:
   7 #   http://www.gnu.org/software/make/manual/make.html
   8 #
   9
  10
  11 #
  12 # Macros for TOOLS
  13 #
  14 # We use the C++ compiler for everything and then use the -Wl,-as-needed flag
  15 # in the linker to drop libc++ unless it's actually needed.
  16 #
  17 CC ?= $(NACL_COMPILER_PREFIX) gcc
  18 CXX ?= $(NACL_COMPILER_PREFIX) g++
  19 LINK ?= $(CXX)
  20 AR ?= ar
  21 ARFLAGS = -crs
  22 STRIP ?= strip
  23
  24 ifeq (,$(findstring gcc,$(shell $(WHICH) gcc)))
  25 $(warning To skip the host build use:)
  26 $(warning "make all_versions NO_HOST_BUILDS=1")
  27 $(error Unable to find gcc in PATH while building Host build)
  28 endif
  29
  30 HOST_WARNINGS ?= -Wno-long-long -Wall -Werror
  31 HOST_CFLAGS = -fPIC -pthread $(HOST_WARNINGS) -I$(NACL_SDK_ROOT)/include
  32
  33 ifneq ($(OSNAME),mac)
  34 # Adding -Wl,-Bsymbolic means that symbols defined within the module are always
  35 # used by the module, and not shadowed by symbols already loaded in, for
  36 # exmaple, libc.  Without this the libc symbols (or anything injected with
  37 # LD_PRELOAD will take precedence).
  38 # -pthread is not needed on mac (libpthread is a symlink to libSystem) and
  39 # in fact generated a warning if passed at link time.
  40 HOST_LDFLAGS ?= -Wl,-Map,$(OUTDIR)/$(TARGET).map -Wl,-Bsymbolic -pthread
  41 HOST_CFLAGS += -I$(NACL_SDK_ROOT)/include/mac
  42 else
  43 HOST_LDFLAGS ?= -Wl,-map -Wl,$(OUTDIR)/$(TARGET).map
  44 HOST_CFLAGS += -I$(NACL_SDK_ROOT)/include/linux
  45 endif
  46
  47
  48 #
  49 # Individual Macros
  50 #
  51 # $1 = Source name
  52 # $2 = Compile flags
  53 #
  54 define C_COMPILER_RULE
  55 -include $(call SRC_TO_DEP,$(1))
  56 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
  57         $(call LOG,CC  ,$$@,$(CC) -o $$@ -c $$< -fPIC $(POSIX_CFLAGS) $(HOST_CFLAGS) $(CFLAGS) $(2))
  58         @$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
  59 endef
  60
  61 define CXX_COMPILER_RULE
  62 -include $(call SRC_TO_DEP,$(1))
  63 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
  64         $(call LOG,CXX ,$$@,$(CXX) -o $$@ -c $$< -fPIC $(POSIX_CFLAGS) $(HOST_CFLAGS) $(CXXFLAGS) $(2))
  65         @$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
  66 endef
  67
  68 #
  69 # Compile Macro
  70 #
  71 # $1 = Source name
  72 # $2 = POSIX compiler flags
  73 # $3 = VC compiler flags (unused)
  74 #
  75 define COMPILE_RULE
  76 ifeq ($(suffix $(1)),.c)
  77 $(call C_COMPILER_RULE,$(1),$(2) $(foreach inc,$(INC_PATHS),-I$(inc)))
  78 else
  79 $(call CXX_COMPILER_RULE,$(1),$(2) $(foreach inc,$(INC_PATHS),-I$(inc)))
  80 endif
  81 endef
  82
  83
  84 #
  85 # SO Macro
  86 #
  87 # $1 = Target name
  88 # $2 = list of source files
  89 #
  90 define SO_RULE
  91 $(error 'Shared libraries not supported by Host')
  92 endef
  93
  94
  95 #
  96 # LIB Macro
  97 #
  98 # $1 = Target name
  99 # $2 = List of source files
 100 #
 101 define LIB_RULE
 102 $(STAMPDIR)/$(1).stamp: $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a
 103         @echo "TOUCHED $$@" > $(STAMPDIR)/$(1).stamp
 104
 105 all: $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a
 106 $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a: $(foreach src,$(2),$(call SRC_TO_OBJ,$(src)))
 107         $(MKDIR) -p $$(dir $$@)
 108         $(RM) -f $$@
 109         $(call LOG,LIB,$$@,$(AR) $(ARFLAGS) $$@ $$^)
 110 endef
 111
 112
 113 #
 114 # Link Macro
 115 #
 116 # $1 = Target name
 117 # $2 = List of inputs
 118 # $3 = List of libs
 119 # $4 = List of deps
 120 # $5 = List of lib dirs
 121 # $6 = Linker flags
 122 #
 123 ifdef STANDALONE
 124 define LINKER_RULE
 125 all: $(1)
 126 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 127         $(call LOG,LINK,$$@,$(LINK) -o $(1) $(2) $(HOST_LDFLAGS) $(LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 128 endef
 129 else
 130 define LINKER_RULE
 131 all: $(1)
 132 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 133         $(call LOG,LINK,$$@,$(LINK) -shared -o $(1) $(2) $(HOST_LDFLAGS) $(LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 134 endef
 135 endif
 136
 137
 138 #
 139 # Link Macro
 140 #
 141 # $1 = Target Name
 142 # $2 = List of source files
 143 # $3 = List of LIBS
 144 # $4 = List of DEPS
 145 # $5 = POSIX linker flags
 146 # $6 = VC linker flags
 147 #
 148 define LINK_RULE
 149 $(call LINKER_RULE,$(OUTDIR)/$(1)$(HOST_EXT),$(foreach src,$(2),$(call SRC_TO_OBJ,$(src))),$(filter-out pthread,$(3)),$(4),$(LIB_PATHS),$(5))
 150 endef
 151
 152 all: $(LIB_LIST) $(DEPS_LIST)
 153
 154
 155 #
 156 # Strip Macro
 157 # The host build makes shared libraries, so the best we can do is -S, which
 158 # only strip debug symbols.  We don't strip the symbol names.
 159 #
 160 # $1 = Target name
 161 # $2 = Input name
 162 #
 163 define STRIP_RULE
 164 all: $(OUTDIR)/$(1)$(HOST_EXT)
 165 $(OUTDIR)/$(1)$(HOST_EXT): $(OUTDIR)/$(2)$(HOST_EXT)
 166         $(call LOG,STRIP,$$@,$(STRIP) -S -o $$@ $$^)
 167 endef
 168
 169
 170 #
 171 # Run standalone builds (command line builds outside of chrome)
 172 #
 173 ifdef STANDALONE
 174 run: all
 175         $(RUN_UNDER) $(OUTDIR)/$(TARGET)$(HOST_EXT) $(EXE_ARGS)
 176 endif