openwrt/toolchain/gcc/Makefile

   1 # Makefile for to build a gcc/uClibc toolchain
   2 #
   3 # Copyright (C) 2002-2003 Erik Andersen <andersen@uclibc.org>
   4 # Copyright (C) 2004 Manuel Novoa III <mjn3@uclibc.org>
   5 # Copyright (C) 2005 Felix Fietkau <openwrt@nbd.name>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15 # General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20
  21 include $(TOPDIR)/rules.mk
  22
  23 GCC_VERSION:=$(strip $(GCC_VERSION))
  24
  25 #GCC_SITE:=ftp://ftp.gnu.org/gnu/gcc/releases/gcc-$(GCC_VERSION)
  26 GCC_SITE:=ftp://ftp.fu-berlin.de/unix/languages/gcc/releases/gcc-$(GCC_VERSION) \
  27         http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-$(GCC_VERSION)
  28
  29 GCC_SOURCE:=gcc-$(GCC_VERSION).tar.bz2
  30 GCC_DIR:=$(TOOL_BUILD_DIR)/gcc-$(GCC_VERSION)
  31 GCC_CAT:=bzcat
  32 GCC_STRIP_HOST_BINARIES:=true
  33
  34 #############################################################
  35 #
  36 # Setup some initial stuff
  37 #
  38 #############################################################
  39
  40 ifeq ($(BR2_INSTALL_LIBGCJ),y)
  41 TARGET_LANGUAGES:=c,c++,java
  42 else
  43 ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
  44 TARGET_LANGUAGES:=c,c++
  45 else
  46 TARGET_LANGUAGES:=c
  47 endif
  48 endif
  49
  50 #############################################################
  51 #
  52 # build the first pass gcc compiler
  53 #
  54 #############################################################
  55
  56 GCC_BUILD_DIR1:=$(TOOL_BUILD_DIR)/gcc-$(GCC_VERSION)-initial
  57
  58 $(DL_DIR)/$(GCC_SOURCE):
  59         mkdir -p $(DL_DIR)
  60         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(GCC_SOURCE) x $(GCC_SITE)
  61
  62 $(GCC_DIR)/.unpacked: $(DL_DIR)/$(GCC_SOURCE)
  63         mkdir -p $(TOOL_BUILD_DIR)
  64         $(GCC_CAT) $(DL_DIR)/$(GCC_SOURCE) | tar -C $(TOOL_BUILD_DIR) $(TAR_OPTIONS) -
  65         touch $(GCC_DIR)/.unpacked
  66
  67 $(GCC_DIR)/.patched: $(GCC_DIR)/.unpacked
  68         # Apply any files named gcc-*.patch from the source directory to gcc
  69         $(SCRIPT_DIR)/patch-kernel.sh $(GCC_DIR) ./$(GCC_VERSION) \*.patch
  70         # Note: The soft float situation has improved considerably with gcc 3.4.x.
  71         # We can dispense with the custom spec files, as well as libfloat for the arm case.
  72         # However, we still need a patch for arm.  There's a similar patch for gcc 3.3.x
  73         # which needs to be integrated so we can kill of libfloat for good.
  74 ifeq ($(BR2_SOFT_FLOAT),y)
  75 ifeq ("$(strip $(ARCH))","arm")
  76         $(SCRIPT_DIR)/patch-kernel.sh $(GCC_DIR) ./$(GCC_VERSION) arm-softfloat.patch.conditional
  77 endif
  78 ifeq ("$(strip $(ARCH))","armeb")
  79         $(SCRIPT_DIR)/patch-kernel.sh $(GCC_DIR) ./$(GCC_VERSION) arm-softfloat.patch.conditional
  80 endif
  81 endif
  82         touch $(GCC_DIR)/.patched
  83
  84 # The --without-headers option stopped working with gcc 3.0 and has never been
  85 # # fixed, so we need to actually have working C library header files prior to
  86 # # the step or libgcc will not build...
  87
  88 $(GCC_BUILD_DIR1)/.configured: $(GCC_DIR)/.patched
  89         mkdir -p $(GCC_BUILD_DIR1)
  90         (cd $(GCC_BUILD_DIR1); rm -f config.cache; PATH=$(TARGET_PATH) \
  91                 $(GCC_DIR)/configure \
  92                 --prefix=$(STAGING_DIR) \
  93                 --build=$(GNU_HOST_NAME) \
  94                 --host=$(GNU_HOST_NAME) \
  95                 --target=$(REAL_GNU_TARGET_NAME) \
  96                 --enable-languages=c \
  97                 --disable-shared \
  98                 --with-sysroot=$(TOOL_BUILD_DIR)/uClibc_dev/ \
  99                 --disable-__cxa_atexit \
 100                 --enable-target-optspace \
 101                 --with-gnu-ld \
 102                 $(DISABLE_NLS) \
 103                 $(MULTILIB) \
 104                 $(SOFT_FLOAT_CONFIG_OPTION) \
 105                 $(GCC_WITH_CPU) $(GCC_WITH_ARCH) $(GCC_WITH_TUNE) \
 106                 $(EXTRA_GCC_CONFIG_OPTIONS));
 107         touch $(GCC_BUILD_DIR1)/.configured
 108
 109 $(GCC_BUILD_DIR1)/.compiled: $(GCC_BUILD_DIR1)/.configured
 110         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR1) all-gcc
 111         touch $(GCC_BUILD_DIR1)/.compiled
 112
 113 $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc: $(GCC_BUILD_DIR1)/.compiled
 114         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR1) install-gcc
 115
 116 #############################################################
 117 #
 118 # second pass compiler build.  Build the compiler targeting
 119 # the newly built shared uClibc library.
 120 #
 121 #############################################################
 122 #
 123 # Sigh... I had to rework things because using --with-gxx-include-dir
 124 # causes issues with include dir search order for g++.  This seems to
 125 # have something to do with "path translations" and possibly doesn't
 126 # affect gcc-target.  However, I haven't tested gcc-target yet so no
 127 # guarantees.  mjn3
 128
 129 GCC_BUILD_DIR2:=$(TOOL_BUILD_DIR)/gcc-$(GCC_VERSION)-final
 130 $(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.patched $(STAGING_DIR)/lib/libc.a
 131         mkdir -p $(GCC_BUILD_DIR2)
 132         # Important!  Required for limits.h to be fixed.
 133         rm -rf $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
 134         ln -sf ../include $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
 135         rm -rf $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/lib
 136         ln -sf ../lib $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/lib
 137         (cd $(GCC_BUILD_DIR2); rm -f config.cache; PATH=$(TARGET_PATH) \
 138                 $(GCC_DIR)/configure \
 139                 --prefix=$(STAGING_DIR) \
 140                 --build=$(GNU_HOST_NAME) \
 141                 --host=$(GNU_HOST_NAME) \
 142                 --target=$(REAL_GNU_TARGET_NAME) \
 143                 --enable-languages=$(TARGET_LANGUAGES) \
 144                 --enable-shared \
 145                 --disable-__cxa_atexit \
 146                 --enable-target-optspace \
 147                 --with-gnu-ld \
 148                 $(DISABLE_NLS) \
 149                 $(MULTILIB) \
 150                 $(SOFT_FLOAT_CONFIG_OPTION) \
 151                 $(GCC_WITH_CPU) $(GCC_WITH_ARCH) $(GCC_WITH_TUNE) \
 152                 $(GCC_USE_SJLJ_EXCEPTIONS) \
 153                 $(EXTRA_GCC_CONFIG_OPTIONS));
 154         touch $(GCC_BUILD_DIR2)/.configured
 155
 156 $(GCC_BUILD_DIR2)/.compiled: $(GCC_BUILD_DIR2)/.configured
 157         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR2) all
 158         touch $(GCC_BUILD_DIR2)/.compiled
 159
 160 gcc-install: $(GCC_BUILD_DIR2)/.compiled
 161         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR2) install
 162         echo $(GCC_VERSION) > $(STAGING_DIR)/gcc_version
 163         # Set up the symlinks to enable lying about target name.
 164         set -e; \
 165         (cd $(STAGING_DIR); \
 166                 ln -sf $(REAL_GNU_TARGET_NAME) $(GNU_TARGET_NAME); \
 167                 cd bin; \
 168                 for app in $(REAL_GNU_TARGET_NAME)-* ; do \
 169                         ln -sf $${app} \
 170                         $(GNU_TARGET_NAME)$${app##$(REAL_GNU_TARGET_NAME)}; \
 171                 done; \
 172         );
 173         #
 174         # Now for the ugly 3.3.x soft float hack...
 175         #
 176 ifeq ($(BR2_SOFT_FLOAT),y)
 177 ifeq ($(findstring 3.3.,$(GCC_VERSION)),3.3.)
 178         # Make sure we have a soft float specs file for this arch
 179         if [ ! -f ./$(GCC_VERSION)/specs-$(ARCH)-soft-float ] ; then \
 180                 echo soft float configured but no specs file for this arch ; \
 181                 /bin/false ; \
 182         fi;
 183         # Replace specs file with one that defaults to soft float mode.
 184         if [ ! -f $(STAGING_DIR)/lib/gcc-lib/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs ] ; then \
 185                 echo staging dir specs file is missing ; \
 186                 /bin/false ; \
 187         fi;
 188         cp ./$(GCC_VERSION)/specs-$(ARCH)-soft-float $(STAGING_DIR)/lib/gcc-lib/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs
 189 endif
 190 endif
 191 # We do another ugly hack here because the standard behaviour is
 192 # to include a reference to libgcc.so.1 in all binaries. For flash space
 193 # saving, we change the specs file to link in a static libgcc here.
 194         if [ ! -f $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs ] ; then \
 195                 echo staging dir specs file is missing ; \
 196                 /bin/false ; \
 197         fi;
 198         if grep -q as-needed $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs; then \
 199                 patch -d $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/ -p0 < ./$(GCC_VERSION)/static-libgcc.patch.conditional ; \
 200         fi;
 201
 202 source: $(DL_DIR)/$(GCC_SOURCE)
 203 prepare: $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc
 204 compile: gcc-install
 205 install:
 206 clean: gcc-clean
 207         rm -rf $(GCC_DIR)
 208         rm -rf $(GCC_BUILD_DIR1)
 209         rm -rf $(GCC_BUILD_DIR2)
 210         rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gc*
 211         rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-c*