From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnout Vandecappelle (Essensium/Mind) Date: Wed, 12 Apr 2017 11:38:38 +0200 Subject: [Buildroot] [PATCH 04/53] Move $(HOST_DIR)/usr/lib to $(HOST_DIR)/lib In-Reply-To: <20170412093928.1006-1-arnout@mind.be> References: <20170412093928.1006-1-arnout@mind.be> Message-ID: <20170412093928.1006-5-arnout@mind.be> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net This is a step towards eliminating $(HOST_DIR)/usr. It allows us to convert all packages installing things into $(HOST_DIR)/usr/lib without affecting the rest. To allow compatibility with packages that still use $(HOST_DIR)/usr as the prefix, create a symlink from usr/lib to ../lib. Note that the symlink creation will break when $(HOST_DIR)/usr/lib already exists as a directory, i.e. when rebuilding in an existing output directory. This is necessary: if we don't break it now, the following commits (which remove the usr part from various variables) _will_ break it. At the same time as creating this symlink, we also have to update the check-host-rpath to accept both $(HOST_DIR)/usr/lib and $(HOST_DIR)/lib, because depending on how the package derives the path, it may be different. Since there are some dependency chains that involve $(STAGING_DIR), $(STAGING_DIR) may in fact be created before $(HOST_DIR). Since $(STAGING_DIR) is a subdirectory of $(HOST_DIR), it is possible that the newly added rule for $(HOST_DIR) never triggers. To make sure that the rule does trigger, add an order-only dependency from $(STAGING_DIR) to $(HOST_DIR). Signed-off-by: Arnout Vandecappelle (Essensium/Mind) --- Makefile | 10 +++++++--- support/scripts/check-host-rpath | 7 ++++--- 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/Makefile b/Makefile index f19e81f5c6..1cfc5695e3 100644 --- a/Makefile +++ b/Makefile @@ -236,7 +236,7 @@ LEGAL_REPORT = $(LEGAL_INFO_DIR)/README # dependencies anywhere else # ################################################################################ -$(BUILD_DIR) $(TARGET_DIR) $(HOST_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST): +$(BUILD_DIR) $(TARGET_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST): @mkdir -p $@ BR2_CONFIG = $(CONFIG_DIR)/.config @@ -552,11 +552,15 @@ world: target-post-image legal-info legal-info-prepare legal-info-clean printvars help \ list-defconfigs target-finalize target-post-image source-check +# When creating HOST_DIR, also symlink usr/lib -> ../lib +$(HOST_DIR): + @mkdir -p $@/usr $@/lib + @ln -snf ../lib $@/usr/lib + # Populating the staging with the base directories is handled by the skeleton package -$(STAGING_DIR): +$(STAGING_DIR): | $(HOST_DIR) @mkdir -p $(STAGING_DIR) @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging - @mkdir -p $(HOST_DIR)/usr @ln -snf ../$(GNU_TARGET_NAME) $(HOST_DIR)/usr/$(GNU_TARGET_NAME) RSYNC_VCS_EXCLUSIONS = \ diff --git a/support/scripts/check-host-rpath b/support/scripts/check-host-rpath index 6ce547cb04..29bec012fc 100755 --- a/support/scripts/check-host-rpath +++ b/support/scripts/check-host-rpath @@ -1,7 +1,7 @@ #!/usr/bin/env bash -# This script scans $(HOST_DIR)/{bin,sbin} for all ELF files, and checks -# they have an RPATH to $(HOST_DIR)/usr/lib if they need libraries from +# This script scans $(HOST_DIR)/{,usr/}{bin,sbin} for all ELF files, and checks +# they have an RPATH to $(HOST_DIR)/{,usr/}lib if they need libraries from # there. # Override the user's locale so we are sure we can parse the output of @@ -40,7 +40,7 @@ elf_needs_rpath() { local lib while read lib; do - [ -e "${hostdir}/usr/lib/${lib}" ] && return 0 + [ -e "${hostdir}/lib/${lib}" ] && return 0 done < <( readelf -d "${file}" \ |sed -r -e '/^.* \(NEEDED\) .*Shared library: \[(.+)\]$/!d;' \ -e 's//\1/;' \ @@ -58,6 +58,7 @@ check_elf_has_rpath() { for dir in ${rpath//:/ }; do # Remove duplicate and trailing '/' for proper match dir="$( sed -r -e 's:/+:/:g; s:/$::;' <<<"${dir}" )" + [ "${dir}" = "${hostdir}/lib" ] && return 0 [ "${dir}" = "${hostdir}/usr/lib" ] && return 0 done done < <( readelf -d "${file}" \ -- 2.11.0