[Buildroot] [RFC] First hack for external toolchain support based on sysroot
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Wed Dec 10 08:24:57 UTC 2008
Hi,
Any reaction to this patch ?
Thanks,
Thomas
Le Tue, 2 Dec 2008 23:21:32 +0100,
Thomas Petazzoni <thomas.petazzoni at free-electrons.com> a écrit :
> Hi,
>
> This evening, I had a quick look at implementing support for external
> toolchain based on --sysroot. It seems to work, see the included
> patch. It's very hacky at the moment, I'm waiting for your
> suggestions to improve the patch.
>
> Sincerly,
>
> Thomas
>
> ---
>
> Another external toolchain support solution
>
> * In toolchain/external-toolchain/ext-tool.mk, copy the contents of
> the sysroot directory to the staging dir.
>
> * In package/Makefile.in, add a --sysroot CFLAGS pointing to the
> staging dir
>
> * Remove the CFLAGS and LDFLAGS definition from
> TARGET_CONFIGURE_OPTS. I haven't investigated exactly why, but with
> these options, DirectFB fails to build because it cannot find
> PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP, even if DirectFB's Makefile
> properly sets -D_GNU_SOURCE.
>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> ---
> package/Makefile.in | 4 +---
> toolchain/external-toolchain/ext-tool.mk | 6 ++++++
> 2 files changed, 7 insertions(+), 3 deletions(-)
>
> Index: buildroot2/package/Makefile.in
> ===================================================================
> --- buildroot2.orig/package/Makefile.in
> +++ buildroot2/package/Makefile.in
> @@ -89,7 +89,7 @@
> # else it's an external toolchain
> #########################################################################
> else
> -TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
> -I$(STAGING_DIR)/include -I$(STAGING_DIR)/usr/include
> -I$(TOOLCHAIN_EXTERNAL_PATH)/$(TOOLCHAIN_EXTERNAL_PREFIX)/include
> +TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
> -I$(STAGING_DIR)/include -I$(STAGING_DIR)/usr/include
> -I$(TOOLCHAIN_EXTERNAL_PATH)/$(TOOLCHAIN_EXTERNAL_PREFIX)/include
> --sysroot $(STAGING_DIR)/ TARGET_CXXFLAGS=$(TARGET_CFLAGS)
> TARGET_LDFLAGS=-L$(STAGING_DIR)/lib -L$(STAGING_DIR)/usr/lib endif @@
> -210,8 +210,6 @@ AR="$(TARGET_AR)" \ AS="$(TARGET_AS)" \
> LD="$(TARGET_LD)" \
> - CFLAGS="$(TARGET_CFLAGS)" \
> - LDFLAGS="$(TARGET_LDFLAGS)" \
> NM="$(TARGET_NM)" \
> CC="$(TARGET_CC) $(TARGET_CFLAGS)" \
> GCC="$(TARGET_CC) $(TARGET_CFLAGS)" \
> Index: buildroot2/toolchain/external-toolchain/ext-tool.mk
> ===================================================================
> --- buildroot2.orig/toolchain/external-toolchain/ext-tool.mk
> +++ buildroot2/toolchain/external-toolchain/ext-tool.mk
> @@ -44,6 +44,11 @@
> \
> echo -n
>
> +copy_toolchain_sysroot = \
> + SYSROOT_DIR=`$(TARGET_CC) -v 2>&1 | grep ^Configured | tr "
> " "\n" | grep -- "--with-sysroot" | cut -f2 -d=`; \
> + cp -a $${SYSROOT_DIR}/* $(STAGING_DIR)/ ; \
> + find $(STAGING_DIR) -type d | xargs chmod 755
> +
> uclibc: dependencies $(TARGET_DIR)/lib/$(strip $(subst ",,
> $(BR2_TOOLCHAIN_EXTERNAL_LIB_C)))
> $(TARGET_DIR)/lib/$(strip $(subst ",,
> $(BR2_TOOLCHAIN_EXTERNAL_LIB_C))): @@ -54,3 +59,4 @@
> for libs in $(strip $(subst ",,
> $(BR2_TOOLCHAIN_EXTERNAL_LIBS))); do \ $(call
> copy_toolchain_lib_root, $$libs, /lib,
> $(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ done
> + $(call copy_toolchain_sysroot)
> \ No newline at end of file
>
>
--
Thomas Petazzoni, Free Electrons
Kernel, drivers and embedded Linux development,
consulting, training and support.
http://free-electrons.com
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