[Buildroot] Several issues with building multiple "projects" forsame architecture
Ulf Samuelsson
ulf at atmel.com
Mon Oct 29 18:22:40 UTC 2007
From: "Jonathan Nalley" <buildroot at bluebot.org>
To: <buildroot at uclibc.org>
Sent: Monday, October 29, 2007 4:55 PM
Subject: [Buildroot] Several issues with building multiple "projects" forsame architecture
>I am using the buildroot to build for several different boards, some of them
> have the same CPU architecture (PPC405GP/EP). I have noticed some issues
> with the "project" concept in the buildroot. Since the builds are for the
> same architecture the toolchain is created under "build_powerpc".
> Everything works fine for the first board, but for subsequent builds for
> different "project" names things are missing under
> "project_build_powerpc/PROJECT_NAME/root". Specifically:
>
> /root/lib/libgcc_s.so
> /root/usr/lib/libstdc++.so
> /root/usr/sbin/ethtool
>
> This is because the make files that install those files check for:
>
> $(GCC_BUILD_DIR2)/.libs_installed
>
> and
>
> $(ETHTOOL_DIR)/.installed
>
> (There are several other packages whose make files also behave this way)
>
> The problem with this is that the files are only installed for the first
> project, subsequent projects see the .installed file in the BUILD directory
> and think that files have already been copied to the TARGET directory. Is
> there a reason that the buildroot relies on .installed files instead of the
> actual target file?
>
> For example to fix ethtool I made the following change:
>
> diff -r ff93bc269d3d buildroot/package/ethtool/ethtool.mk
> --- a/buildroot/package/ethtool/ethtool.mk Mon Oct 29 10:03:23 2007
> -0500
> +++ b/buildroot/package/ethtool/ethtool.mk Mon Oct 29 10:50:36 2007
> -0500
> @@ -33,11 +33,11 @@ ETHTOOL_CAT:=$(ZCAT)
> $(ETHTOOL_DIR)/ethtool: $(ETHTOOL_DIR)/.configured
> $(MAKE) CC=$(TARGET_CC) -C $(ETHTOOL_DIR)
>
> -$(ETHTOOL_DIR)/.installed: $(ETHTOOL_DIR)/ethtool
> +$(TARGET_DIR)/usr/sbin/ethtool: $(ETHTOOL_DIR)/ethtool
> cp $(ETHTOOL_DIR)/ethtool $(TARGET_DIR)/usr/sbin
> touch $@
>
> -ethtool: uclibc $(ETHTOOL_DIR)/.installed
> +ethtool: uclibc $(TARGET_DIR)/usr/sbin/ethtool
>
> ethtool-source: $(DL_DIR)/$(ETHTOOL_SOURCE)
It might be better to define a dependencies directory,
$(DEPENDENCIES_DIR) = project_build_dir/$(PROJECT)/depend
so you can install the ".*' files in this directory.
In many places, you just do
make DESTDIR=xxx -C <package_dir> install
Best Regards
Ulf Samuelsson
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