From 077d84f543b36d27d1d8aa5f759d6eed6c6a65b2 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <​jk@ozlabs.org>
Date: Sat, 12 Apr 2008 23:14:42 +0000
Subject: [PATCH] provide a cleaner way to specify a biarch toolchain build
Currently, to build a biarch toolchain, we need to explicitly give
options to the binutils and gcc configure commands:
CONFIG_EXTRA_BINUTILS_CONFIG_OPTIONS="--enable-targets=powerpc64-linux-uclibc"
CONFIG_EXTRA_GCC_CONFIG_OPTIONS="--enable-biarch --enable-targets=powerpc64-linux-uclibc"
This change replaces the command line options with an 'extra arch'
configure option:
CONFIG_EXTRA_TARGET_ARCH=y
CONFIG_EXTRA_TARGET_ARCH_NAME="powerpc64"
And a way to invoke this extra arch on the compiler command-line:
CONFIG_EXTRA_TARGET_ARCH_OPTS="-m64"
In this case, this results in an extra compiler:
'powerpc64-linux-uclibc-gcc', which invokes
'powerpc-linux-uclibc-gcc -m64'
This is a more standard way of building biarch toolchains, and allows
the packages to not have to care about how to invoke the 64-bit
compiler.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
SVN-Revision: 10802
---
toolchain/Config.in | 29 ++++++++++++++++++++++++
toolchain/binutils/Makefile | 3 +++
toolchain/gcc/Makefile | 18 +++++++++++++++
toolchain/gcc/files/alternate-arch-cc.in | 3 +++
4 files changed, 53 insertions(+)
create mode 100644 toolchain/gcc/files/alternate-arch-cc.in
diff --git a/toolchain/Config.in b/toolchain/Config.in
index 192818f942..c4f6e14f57 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -10,6 +10,35 @@ menuconfig TOOLCHAINOPTS
bool "Toolchain Options" if DEVEL
depends !NATIVE_TOOLCHAIN
+menuconfig EXTRA_TARGET_ARCH
+ bool
+ prompt "Enable an extra toolchain target architecture" if TOOLCHAINOPTS
+ default n
+ help
+ Some builds may require a 'biarch' toolchain. This option
+ allows you to specify an additional target arch.
+
+ Most people will answer N here.
+
+ config EXTRA_TARGET_ARCH_NAME
+ string
+ prompt "Extra architecture name" if EXTRA_TARGET_ARCH
+ help
+ Specify the cpu name (eg powerpc64 or x86_64) of the
+ additional target architecture.
+
+ config EXTRA_TARGET_ARCH_OPTS
+ string
+ prompt "Extra architecture compiler options" if EXTRA_TARGET_ARCH
+ help
+ If you're specifying an addition target architecture,
+ you'll probably need to also provide options to make
+ the compiler use this alternate arch.
+
+ For example, if you're building a compiler that can build
+ both powerpc and powerpc64 binaries, you'll need to
+ specify -m64 here.
+
source "toolchain/binutils/Config.in"
source "toolchain/gcc/Config.in"
source "toolchain/uClibc/Config.in"
diff --git a/toolchain/binutils/Makefile b/toolchain/binutils/Makefile
index b3161b3155..8682fa5969 100644
--- a/toolchain/binutils/Makefile
+++ b/toolchain/binutils/Makefile
@@ -24,6 +24,8 @@ BUILD_DIR_HOST:=$(BUILD_DIR_TOOLCHAIN)
include $(INCLUDE_DIR)/host-build.mk
+EXTRA_TARGET=$(if $(CONFIG_EXTRA_TARGET_ARCH),--enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-uclibc)
+
define Build/Configure
$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(PKG_BUILD_DIR)/
(cd $(PKG_BUILD_DIR); \
@@ -34,6 +36,7 @@ define Build/Configure
--target=$(REAL_GNU_TARGET_NAME) \
--disable-werror \
--disable-nls \
+ $(EXTRA_TARGET) \
$(SOFT_FLOAT_CONFIG_OPTION) \
$(call qstrip,$(CONFIG_EXTRA_BINUTILS_CONFIG_OPTIONS)) \
);
diff --git a/toolchain/gcc/Makefile b/toolchain/gcc/Makefile
index a1d1baa400..875c37582d 100644
--- a/toolchain/gcc/Makefile
+++ b/toolchain/gcc/Makefile
@@ -40,6 +40,8 @@ BUILD_DIR2:=$(BUILD_DIR_HOST)/gcc-$(PKG_VERSION)-final
SEP:=,
TARGET_LANGUAGES:="c$(if $(CONFIG_INSTALL_LIBSTDCPP),$(SEP)c++)$(if $(CONFIG_INSTALL_LIBGCJ),$(SEP)java)"
+EXTRA_TARGET=$(if $(CONFIG_EXTRA_TARGET_ARCH),--enable-biarch --enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-uclibc)
+
define Stage1/Configure
$(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk
$(SED) 's,GCC_VERSION=.*,GCC_VERSION=$(PKG_VERSION),' $(TOOLCHAIN_DIR)/info.mk
@@ -60,6 +62,7 @@ define Stage1/Configure
--disable-nls \
--disable-libmudflap \
--disable-multilib \
+ $(EXTRA_TARGET) \
$(SOFT_FLOAT_CONFIG_OPTION) \
$(call qstrip,$(CONFIG_EXTRA_GCC_CONFIG_OPTIONS)) \
);
@@ -93,6 +96,7 @@ define Stage2/Configure
--disable-nls \
--disable-libmudflap \
--disable-multilib \
+ $(EXTRA_TARGET) \
$(SOFT_FLOAT_CONFIG_OPTION) \
$(call qstrip,$(CONFIG_EXTRA_GCC_CONFIG_OPTIONS)) \
);
@@ -102,6 +106,19 @@ define Stage2/Compile
export SHELL="\$(BASH)"; \$(MAKE) -C \$(BUILD_DIR2) all
endef
+define SetupExtraArch
+ for app in $(TOOLCHAIN_DIR)/bin/$(OPTIMIZE_FOR_CPU)*-{gcc,gcc-*,g++}; do \
+ [ -e $$$$app ] || continue; \
+ old_base=$$$$(basename $$$$app); \
+ new_base=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-$$$${old_base##$(OPTIMIZE_FOR_CPU)-}; \
+ sed -e "s/@CC_BASE@/$$$$old_base/" \
+ -e 's/@EXTRA_ARCH_OPTS@/$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_OPTS))/' \
+ ./files/alternate-arch-cc.in > \
+ $(TOOLCHAIN_DIR)/bin/$$$$new_base; \
+ chmod a+x $(TOOLCHAIN_DIR)/bin/$$$$new_base; \
+ done
+endef
+
define Stage2/Install
$(MAKE) -C $(BUILD_DIR2) \
SHELL="$(BASH)" \
@@ -116,6 +133,7 @@ define Stage2/Install
$(GNU_TARGET_NAME)$$$${app##$(REAL_GNU_TARGET_NAME)}; \
done; \
);
+ $(if $(CONFIG_EXTRA_TARGET_ARCH),$(call SetupExtraArch))
endef
define Build/Prepare
diff --git a/toolchain/gcc/files/alternate-arch-cc.in b/toolchain/gcc/files/alternate-arch-cc.in
new file mode 100644
index 0000000000..e169951ebe
--- /dev/null
+++ b/toolchain/gcc/files/alternate-arch-cc.in
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec @CC_BASE@ @EXTRA_ARCH_OPTS@ "$@"
--
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