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 ?= $(CXX)
  20 LIB ?= ar
  21 STRIP ?= strip
  22
  23 # Adding -Wl,-Bsymbolic means that symbols defined within the module are always
  24 # used by the moulde, and not shadowed by symbols already loaded in, for
  25 # exmaple, libc.  Without this the libc symbols (or anything injected with
  26 # LD_PRELOAD will take precedence).
  27 HOST_LDFLAGS ?= -Wl,-Map,$(OUTDIR)/$(TARGET).map -Wl,-Bsymbolic
  28
  29 ifeq (,$(findstring gcc,$(shell $(WHICH) gcc)))
  30 $(warning To skip the host build use:)
  31 $(warning "make all_versions NO_HOST_BUILDS=1")
  32 $(error Unable to find gcc in PATH while building Host build)
  33 endif
  34
  35 HOST_WARNINGS ?= -Wno-long-long -Wall -Werror
  36 HOST_CFLAGS = -fPIC -pthread $(HOST_WARNINGS) -I$(NACL_SDK_ROOT)/include -I$(NACL_SDK_ROOT)/include/linux
  37
  38
  39 #
  40 # Individual Macros
  41 #
  42 # $1 = Source Name
  43 # $2 = Compile Flags
  44 #
  45 define C_COMPILER_RULE
  46 -include $(call SRC_TO_DEP,$(1))
  47 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
  48         $(call LOG,CC  ,$$@,$(CC) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(HOST_CFLAGS) $(2))
  49         @$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
  50 endef
  51
  52 define CXX_COMPILER_RULE
  53 -include $(call SRC_TO_DEP,$(1))
  54 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
  55         $(call LOG,CXX ,$$@,$(CXX) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(HOST_CFLAGS) $(2))
  56         @$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
  57 endef
  58
  59 #
  60 # Compile Macro
  61 #
  62 # $1 = Source Name
  63 # $2 = POSIX Compile Flags
  64 # $3 = VC Flags (unused)
  65 #
  66 define COMPILE_RULE
  67 ifeq ($(suffix $(1)),.c)
  68 $(call C_COMPILER_RULE,$(1),$(2) $(foreach inc,$(INC_PATHS),-I$(inc)))
  69 else
  70 $(call CXX_COMPILER_RULE,$(1),$(2) $(foreach inc,$(INC_PATHS),-I$(inc)))
  71 endif
  72 endef
  73
  74
  75 #
  76 # SO Macro
  77 #
  78 # $1 = Target Name
  79 # $2 = List of Sources
  80 #
  81 #
  82 define SO_RULE
  83 $(error 'Shared libraries not supported by Host')
  84 endef
  85
  86
  87 #
  88 # LIB Macro
  89 #
  90 # $1 = Target Name
  91 # $2 = List of Sources
  92 #
  93 #
  94 define LIB_RULE
  95 $(STAMPDIR)/$(1).stamp: $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a
  96         @echo "TOUCHED $$@" > $(STAMPDIR)/$(1).stamp
  97
  98 all: $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a
  99 $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a: $(foreach src,$(2),$(call SRC_TO_OBJ,$(src)))
 100         $(MKDIR) -p $$(dir $$@)
 101         $(RM) -f $$@
 102         $(call LOG,LIB,$$@,$(LIB) -cr $$@ $$^)
 103 endef
 104
 105
 106 #
 107 # Link Macro
 108 #
 109 # $1 = Target Name
 110 # $2 = List of inputs
 111 # $3 = List of libs
 112 # $4 = List of deps
 113 # $5 = List of lib dirs
 114 # $6 = Linker Args
 115 #
 116 ifdef STANDALONE
 117 define LINKER_RULE
 118 all: $(1)
 119 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 120         $(call LOG,LINK,$$@,$(LINK) -o $(1) $(2) $(HOST_LDFLAGS) $(NACL_LDFLAGS) $(LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 121 endef
 122 else
 123 define LINKER_RULE
 124 all: $(1)
 125 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 126         $(call LOG,LINK,$$@,$(LINK) -shared -o $(1) $(2) $(HOST_LDFLAGS) $(NACL_LDFLAGS) $(LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 127 endef
 128 endif
 129
 130
 131 #
 132 # Link Macro
 133 #
 134 # $1 = Target Name
 135 # $2 = List of Sources
 136 # $3 = List of LIBS
 137 # $4 = List of DEPS
 138 # $5 = POSIX Linker Switches
 139 # $6 = VC Linker Switches
 140 #
 141 define LINK_RULE
 142 $(call LINKER_RULE,$(OUTDIR)/$(1)$(HOST_EXT),$(foreach src,$(2),$(call SRC_TO_OBJ,$(src))),$(filter-out pthread,$(3)),$(4),$(LIB_PATHS),$(5))
 143 endef
 144
 145 all: $(LIB_LIST) $(DEPS_LIST)
 146
 147
 148 #
 149 # Strip Macro
 150 # The host build makes shared libraries, so the best we can do is strip-debug.
 151 # We cannot strip the symbol names.
 152 #
 153 # $1 = Target Name
 154 # $2 = Input Name
 155 #
 156 define STRIP_RULE
 157 all: $(OUTDIR)/$(1)$(HOST_EXT)
 158 $(OUTDIR)/$(1)$(HOST_EXT): $(OUTDIR)/$(2)$(HOST_EXT)
 159         $(call LOG,STRIP,$$@,$(STRIP) --strip-debug -o $$@ $$^)
 160 endef
 161
 162
 163 #
 164 # Run standalone builds (command line builds outside of chrome)
 165 #
 166 ifdef STANDALONE
 167 run: all
 168         $(RUN_UNDER) $(OUTDIR)/$(TARGET)$(HOST_EXT) $(EXE_ARGS)
 169 endif