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         $(SED) 's,\(version_string.. = "[0-9\.]*\).*\(";\),\1 (OpenWrt-2.0)\2,' $(GCC_DIR)/gcc/version.c
  83         $(SED) 's,\(bug_report_url.. = "\).*\(";\),\1<URL:https://dev.openwrt.org/>\2,' $(GCC_DIR)/gcc/version.c
  84         touch $(GCC_DIR)/.patched
  85
  86 # The --without-headers option stopped working with gcc 3.0 and has never been
  87 # # fixed, so we need to actually have working C library header files prior to
  88 # # the step or libgcc will not build...
  89
  90 $(GCC_BUILD_DIR1)/.configured: $(GCC_DIR)/.patched
  91         mkdir -p $(GCC_BUILD_DIR1)
  92         (cd $(GCC_BUILD_DIR1); rm -f config.cache; PATH=$(TARGET_PATH) \
  93                 $(GCC_DIR)/configure \
  94                 --prefix=$(STAGING_DIR) \
  95                 --build=$(GNU_HOST_NAME) \
  96                 --host=$(GNU_HOST_NAME) \
  97                 --target=$(REAL_GNU_TARGET_NAME) \
  98                 --enable-languages=c \
  99                 --disable-shared \
 100                 --with-sysroot=$(TOOL_BUILD_DIR)/uClibc_dev/ \
 101                 --disable-__cxa_atexit \
 102                 --enable-target-optspace \
 103                 --with-gnu-ld \
 104                 $(DISABLE_NLS) \
 105                 $(MULTILIB) \
 106                 $(SOFT_FLOAT_CONFIG_OPTION) \
 107                 $(GCC_WITH_CPU) $(GCC_WITH_ARCH) $(GCC_WITH_TUNE) \
 108                 $(EXTRA_GCC_CONFIG_OPTIONS));
 109         touch $(GCC_BUILD_DIR1)/.configured
 110
 111 $(GCC_BUILD_DIR1)/.compiled: $(GCC_BUILD_DIR1)/.configured
 112         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR1) all-gcc
 113         touch $(GCC_BUILD_DIR1)/.compiled
 114
 115 $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc: $(GCC_BUILD_DIR1)/.compiled
 116         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR1) install-gcc
 117
 118 #############################################################
 119 #
 120 # second pass compiler build.  Build the compiler targeting
 121 # the newly built shared uClibc library.
 122 #
 123 #############################################################
 124 #
 125 # Sigh... I had to rework things because using --with-gxx-include-dir
 126 # causes issues with include dir search order for g++.  This seems to
 127 # have something to do with "path translations" and possibly doesn't
 128 # affect gcc-target.  However, I haven't tested gcc-target yet so no
 129 # guarantees.  mjn3
 130
 131 GCC_BUILD_DIR2:=$(TOOL_BUILD_DIR)/gcc-$(GCC_VERSION)-final
 132 $(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.patched $(STAGING_DIR)/lib/libc.a
 133         mkdir -p $(GCC_BUILD_DIR2)
 134         # Important!  Required for limits.h to be fixed.
 135         rm -rf $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
 136         ln -sf ../include $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
 137         rm -rf $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/lib
 138         ln -sf ../lib $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/lib
 139         (cd $(GCC_BUILD_DIR2); rm -f config.cache; PATH=$(TARGET_PATH) \
 140                 $(GCC_DIR)/configure \
 141                 --prefix=$(STAGING_DIR) \
 142                 --build=$(GNU_HOST_NAME) \
 143                 --host=$(GNU_HOST_NAME) \
 144                 --target=$(REAL_GNU_TARGET_NAME) \
 145                 --enable-languages=$(TARGET_LANGUAGES) \
 146                 --enable-shared \
 147                 --disable-__cxa_atexit \
 148                 --enable-target-optspace \
 149                 --with-gnu-ld \
 150                 $(DISABLE_NLS) \
 151                 $(MULTILIB) \
 152                 $(SOFT_FLOAT_CONFIG_OPTION) \
 153                 $(GCC_WITH_CPU) $(GCC_WITH_ARCH) $(GCC_WITH_TUNE) \
 154                 $(GCC_USE_SJLJ_EXCEPTIONS) \
 155                 $(EXTRA_GCC_CONFIG_OPTIONS));
 156         touch $(GCC_BUILD_DIR2)/.configured
 157
 158 $(GCC_BUILD_DIR2)/.compiled: $(GCC_BUILD_DIR2)/.configured
 159         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR2) all
 160         touch $(GCC_BUILD_DIR2)/.compiled
 161
 162 gcc-install: $(GCC_BUILD_DIR2)/.compiled
 163         PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR2) install
 164         echo $(GCC_VERSION) > $(STAGING_DIR)/gcc_version
 165         # Set up the symlinks to enable lying about target name.
 166         set -e; \
 167         (cd $(STAGING_DIR); \
 168                 ln -sf $(REAL_GNU_TARGET_NAME) $(GNU_TARGET_NAME); \
 169                 cd bin; \
 170                 for app in $(REAL_GNU_TARGET_NAME)-* ; do \
 171                         ln -sf $${app} \
 172                         $(GNU_TARGET_NAME)$${app##$(REAL_GNU_TARGET_NAME)}; \
 173                 done; \
 174         );
 175         #
 176         # Now for the ugly 3.3.x soft float hack...
 177         #
 178 ifeq ($(BR2_SOFT_FLOAT),y)
 179 ifeq ($(findstring 3.3.,$(GCC_VERSION)),3.3.)
 180         # Make sure we have a soft float specs file for this arch
 181         if [ ! -f ./$(GCC_VERSION)/specs-$(ARCH)-soft-float ] ; then \
 182                 echo soft float configured but no specs file for this arch ; \
 183                 /bin/false ; \
 184         fi;
 185         # Replace specs file with one that defaults to soft float mode.
 186         if [ ! -f $(STAGING_DIR)/lib/gcc-lib/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs ] ; then \
 187                 echo staging dir specs file is missing ; \
 188                 /bin/false ; \
 189         fi;
 190         cp ./$(GCC_VERSION)/specs-$(ARCH)-soft-float $(STAGING_DIR)/lib/gcc-lib/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs
 191 endif
 192 endif
 193 # We do another ugly hack here because the standard behaviour is
 194 # to include a reference to libgcc.so.1 in all binaries. For flash space
 195 # saving, we change the specs file to link in a static libgcc here.
 196         if [ ! -f $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs ] ; then \
 197                 echo staging dir specs file is missing ; \
 198                 /bin/false ; \
 199         fi;
 200         if grep -q as-needed $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs; then \
 201                 patch -d $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/ -p0 < ./$(GCC_VERSION)/static-libgcc.patch.conditional ; \
 202         fi;
 203
 204 source: $(DL_DIR)/$(GCC_SOURCE)
 205 prepare: $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc
 206 compile: gcc-install
 207 install:
 208 clean: gcc-clean
 209         rm -rf $(GCC_DIR)
 210         rm -rf $(GCC_BUILD_DIR1)
 211         rm -rf $(GCC_BUILD_DIR2)
 212         rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gc*
 213         rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-c*