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 $$< -fPIC $(POSIX_CFLAGS) $(HOST_CFLAGS) $(2))
  58         @$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
  59 endef
  60
  61 define CXX_COMPILER_RULE
  62 -include $(call SRC_TO_DEP,$(1))
  63 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
  64         $(call LOG,CXX ,$$@,$(CXX) -o $$@ -c $$< -fPIC $(POSIX_CFLAGS) $(HOST_CFLAGS) $(2))
  65         @$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
  66 endef
  67
  68 #
  69 # Compile Macro
  70 #
  71 # $1 = Source Name
  72 # $2 = POSIX Compile Flags
  73 # $3 = VC Flags (unused)
  74 #
  75 define COMPILE_RULE
  76 ifeq ($(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 Sources
  89 #
  90 #
  91 define SO_RULE
  92 $(error 'Shared libraries not supported by Host')
  93 endef
  94
  95
  96 #
  97 # LIB Macro
  98 #
  99 # $1 = Target Name
 100 # $2 = List of Sources
 101 #
 102 #
 103 define LIB_RULE
 104 $(STAMPDIR)/$(1).stamp: $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a
 105         @echo "TOUCHED $$@" > $(STAMPDIR)/$(1).stamp
 106
 107 all: $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a
 108 $(LIBDIR)/$(OSNAME)_host/$(CONFIG)/lib$(1).a: $(foreach src,$(2),$(call SRC_TO_OBJ,$(src)))
 109         $(MKDIR) -p $$(dir $$@)
 110         $(RM) -f $$@
 111         $(call LOG,LIB,$$@,$(AR) $(ARFLAGS) $$@ $$^)
 112 endef
 113
 114
 115 #
 116 # Link Macro
 117 #
 118 # $1 = Target Name
 119 # $2 = List of inputs
 120 # $3 = List of libs
 121 # $4 = List of deps
 122 # $5 = List of lib dirs
 123 # $6 = Linker Args
 124 #
 125 ifdef STANDALONE
 126 define LINKER_RULE
 127 all: $(1)
 128 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 129         $(call LOG,LINK,$$@,$(LINK) -o $(1) $(2) $(HOST_LDFLAGS) $(LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 130 endef
 131 else
 132 define LINKER_RULE
 133 all: $(1)
 134 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 135         $(call LOG,LINK,$$@,$(LINK) -shared -o $(1) $(2) $(HOST_LDFLAGS) $(LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 136 endef
 137 endif
 138
 139
 140 #
 141 # Link Macro
 142 #
 143 # $1 = Target Name
 144 # $2 = List of Sources
 145 # $3 = List of LIBS
 146 # $4 = List of DEPS
 147 # $5 = POSIX Linker Switches
 148 # $6 = VC Linker Switches
 149 #
 150 define LINK_RULE
 151 $(call LINKER_RULE,$(OUTDIR)/$(1)$(HOST_EXT),$(foreach src,$(2),$(call SRC_TO_OBJ,$(src))),$(filter-out pthread,$(3)),$(4),$(LIB_PATHS),$(5))
 152 endef
 153
 154 all: $(LIB_LIST) $(DEPS_LIST)
 155
 156
 157 #
 158 # Strip Macro
 159 # The host build makes shared libraries, so the best we can do is -S, which
 160 # only strip debug symbols.  We don't strip the symbol names.
 161 #
 162 # $1 = Target Name
 163 # $2 = Input Name
 164 #
 165 define STRIP_RULE
 166 all: $(OUTDIR)/$(1)$(HOST_EXT)
 167 $(OUTDIR)/$(1)$(HOST_EXT): $(OUTDIR)/$(2)$(HOST_EXT)
 168         $(call LOG,STRIP,$$@,$(STRIP) -S -o $$@ $$^)
 169 endef
 170
 171
 172 #
 173 # Run standalone builds (command line builds outside of chrome)
 174 #
 175 ifdef STANDALONE
 176 run: all
 177         $(RUN_UNDER) $(OUTDIR)/$(TARGET)$(HOST_EXT) $(EXE_ARGS)
 178 endif