| Message ID | 1424186973-7838-3-git-send-email-patrickdepinguin@gmail.com |
|---|---|
| State | Superseded |
| Headers | show |
On Tue, Feb 17, 2015 at 4:29 PM, Thomas De Schampheleire <patrickdepinguin@gmail.com> wrote: > From: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> > > Currently, following symbolic links are created in both target and > staging directories: > - lib(32|64) --> lib > - usr/lib(32|64) --> lib > > The decision for lib32 or lib64 is based on the target architecture > configuration in buildroot (BR2_ARCH_IS_64). > > In at least one case this is not correct: when building for a Cavium Octeon III > processor using the toolchain from the Cavium Networks SDK, and specifying > -march=octeon3 in BR2_TARGET_OPTIMIZATION, libraries are expected in directory > 'lib32-fp' rather than 'lib32' (likewise for lib64-fp). These lines are a bit too long, seems my git-based workflow is not yet 100% ok :-o I will resubmit later...
On Tue, Feb 17, 2015 at 4:29 PM, Thomas De Schampheleire <patrickdepinguin@gmail.com> wrote: > From: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> > > Currently, following symbolic links are created in both target and > staging directories: > - lib(32|64) --> lib > - usr/lib(32|64) --> lib > > The decision for lib32 or lib64 is based on the target architecture > configuration in buildroot (BR2_ARCH_IS_64). > > In at least one case this is not correct: when building for a Cavium Octeon III > processor using the toolchain from the Cavium Networks SDK, and specifying > -march=octeon3 in BR2_TARGET_OPTIMIZATION, libraries are expected in directory > 'lib32-fp' rather than 'lib32' (likewise for lib64-fp). > > More generally, for external toolchains, the correct symbolic link is > from (usr/)${ARCH_LIB_DIR} to lib. For internal toolchains, current > toolchains always use either lib32 or lib64. > > Fix the problem as follows: > - create symlink creation helpers in toolchain/helpers.mk > - for external toolchains, call these helpers based on ARCH_LIB_DIR > - for internal toolchains, call these helpers based on the existing > fixed lib32/lib64 logic, moved from Makefile > - to fix build order problems, add the correct dependency on > $(BUILD_DIR) from $(BUILD_DIR)/.root > > Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> > > --- > v2: > - fix 'lib32-fp' leftover in toolchain-buildroot > - silence commands creating symlink with $(Q) > - fix case where ARCH_LIB_DIR is 'lib' > > Note: the handling in the internal toolchain is a bit awkward because it > explicitly adds a new target, but I don't see a much better way: it must > be done _before_ the toolchain is being built. The entire logic cannot > be done in Makefile as ARCH_LIB_DIR is not available there. > --- > Makefile | 14 +------------- > toolchain/helpers.mk | 16 ++++++++++++++++ > toolchain/toolchain-buildroot/toolchain-buildroot.mk | 11 +++++++++++ > toolchain/toolchain-external/toolchain-external.mk | 12 ++++++++++++ > 4 files changed, 40 insertions(+), 13 deletions(-) > > diff --git a/Makefile b/Makefile > index 338c992..9f4cf8a 100644 > --- a/Makefile > +++ b/Makefile > @@ -449,20 +449,10 @@ world: target-post-image > $(BUILD_DIR) $(HOST_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST): > @mkdir -p $@ > > -# We make a symlink lib32->lib or lib64->lib as appropriate > -# MIPS64/n32 requires lib32 even though it's a 64-bit arch. > -ifeq ($(BR2_ARCH_IS_64)$(BR2_MIPS_NABI32),y) > -LIB_SYMLINK = lib64 > -else > -LIB_SYMLINK = lib32 > -endif > - > $(STAGING_DIR): > @mkdir -p $(STAGING_DIR)/bin > @mkdir -p $(STAGING_DIR)/lib > - @ln -snf lib $(STAGING_DIR)/$(LIB_SYMLINK) > @mkdir -p $(STAGING_DIR)/usr/lib > - @ln -snf lib $(STAGING_DIR)/usr/$(LIB_SYMLINK) > @mkdir -p $(STAGING_DIR)/usr/include > @mkdir -p $(STAGING_DIR)/usr/bin > @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging > @@ -475,15 +465,13 @@ RSYNC_VCS_EXCLUSIONS = \ > --exclude .svn --exclude .git --exclude .hg --exclude .bzr \ > --exclude CVS > > -$(BUILD_DIR)/.root: > +$(BUILD_DIR)/.root: $(BUILD_DIR) And this should be an order-only dependency, because the addition of a new file in $(BUILD_DIR) (which is definitely happening after the creation of .root) causes a subsequent 'make' to re-execute this .root step. Hadn't seen that because I had only run 'make' once for each of my tests...
diff --git a/Makefile b/Makefile index 338c992..9f4cf8a 100644 --- a/Makefile +++ b/Makefile @@ -449,20 +449,10 @@ world: target-post-image $(BUILD_DIR) $(HOST_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST): @mkdir -p $@ -# We make a symlink lib32->lib or lib64->lib as appropriate -# MIPS64/n32 requires lib32 even though it's a 64-bit arch. -ifeq ($(BR2_ARCH_IS_64)$(BR2_MIPS_NABI32),y) -LIB_SYMLINK = lib64 -else -LIB_SYMLINK = lib32 -endif - $(STAGING_DIR): @mkdir -p $(STAGING_DIR)/bin @mkdir -p $(STAGING_DIR)/lib - @ln -snf lib $(STAGING_DIR)/$(LIB_SYMLINK) @mkdir -p $(STAGING_DIR)/usr/lib - @ln -snf lib $(STAGING_DIR)/usr/$(LIB_SYMLINK) @mkdir -p $(STAGING_DIR)/usr/include @mkdir -p $(STAGING_DIR)/usr/bin @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging @@ -475,15 +465,13 @@ RSYNC_VCS_EXCLUSIONS = \ --exclude .svn --exclude .git --exclude .hg --exclude .bzr \ --exclude CVS -$(BUILD_DIR)/.root: +$(BUILD_DIR)/.root: $(BUILD_DIR) mkdir -p $(TARGET_DIR) rsync -a --ignore-times $(RSYNC_VCS_EXCLUSIONS) \ --chmod=Du+w --exclude .empty --exclude '*~' \ $(TARGET_SKELETON)/ $(TARGET_DIR)/ $(INSTALL) -m 0644 support/misc/target-dir-warning.txt $(TARGET_DIR_WARNING_FILE) - @ln -snf lib $(TARGET_DIR)/$(LIB_SYMLINK) @mkdir -p $(TARGET_DIR)/usr - @ln -snf lib $(TARGET_DIR)/usr/$(LIB_SYMLINK) touch $@ $(TARGET_DIR): $(BUILD_DIR)/.root diff --git a/toolchain/helpers.mk b/toolchain/helpers.mk index 3121da4..b4879e0 100644 --- a/toolchain/helpers.mk +++ b/toolchain/helpers.mk @@ -1,5 +1,21 @@ # This Makefile fragment declares toolchain related helper functions. +# Create the necessary symlink from (usr/)lib32|lib64|lib32-fp|... to lib +# In general, for external toolchains, the correct link name is $ARCH_LIB_DIR. +create_staging_lib_symlink = \ + LIB_SYMLINK="$(strip $1)" ; \ + if [ "$${LIB_SYMLINK}" != "lib" ]; then \ + ln -snf lib $(STAGING_DIR)/$${LIB_SYMLINK} ; \ + ln -snf lib $(STAGING_DIR)/usr/$${LIB_SYMLINK} ; \ + fi + +create_target_lib_symlink = \ + LIB_SYMLINK="$(strip $1)" ; \ + if [ "$${LIB_SYMLINK}" != "lib" ]; then \ + ln -snf lib $(TARGET_DIR)/$${LIB_SYMLINK} ; \ + ln -snf lib $(TARGET_DIR)/usr/$${LIB_SYMLINK} ; \ + fi + # The copy_toolchain_lib_root function copies a toolchain library and # its symbolic links from the sysroot directory to the target # directory. Note that this function is used both by the external diff --git a/toolchain/toolchain-buildroot/toolchain-buildroot.mk b/toolchain/toolchain-buildroot/toolchain-buildroot.mk index b30cc33..3ccb030 100644 --- a/toolchain/toolchain-buildroot/toolchain-buildroot.mk +++ b/toolchain/toolchain-buildroot/toolchain-buildroot.mk @@ -12,6 +12,17 @@ BR_LIBC = $(call qstrip,$(BR2_TOOLCHAIN_BUILDROOT_LIBC)) TOOLCHAIN_BUILDROOT_DEPENDENCIES = host-gcc-final +ifeq ($(BR2_ARCH_IS_64)$(BR2_MIPS_NABI32),y) +LIB_SYMLINK = lib64 +else +LIB_SYMLINK = lib32 +endif + +host-gcc-final: create-lib-symlinks +create-lib-symlinks: $(STAGING_DIR) $(TARGET_DIR) + $(call create_staging_lib_symlink,$(LIB_SYMLINK)) + $(call create_target_lib_symlink,$(LIB_SYMLINK)) + TOOLCHAIN_BUILDROOT_ADD_TOOLCHAIN_DEPENDENCY = NO $(eval $(virtual-package)) diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk index e05957c..16e398c 100644 --- a/toolchain/toolchain-external/toolchain-external.mk +++ b/toolchain/toolchain-external/toolchain-external.mk @@ -600,6 +600,16 @@ define TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS $(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR},$${ARCH_LIB_DIR},$${SUPPORT_LIB_DIR}) endef +define TOOLCHAIN_EXTERNAL_CREATE_STAGING_LIB_SYMLINK + $(Q)ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \ + $(call create_staging_lib_symlink,$${ARCH_LIB_DIR}) +endef + +define TOOLCHAIN_EXTERNAL_CREATE_TARGET_LIB_SYMLINK + $(Q)ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \ + $(call create_target_lib_symlink,$${ARCH_LIB_DIR}) +endef + # Special installation target used on the Blackfin architecture when # FDPIC is not the primary binary format being used, but the user has # nonetheless requested the installation of the FDPIC libraries to the @@ -699,6 +709,7 @@ define TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT endef define TOOLCHAIN_EXTERNAL_INSTALL_STAGING_CMDS + $(TOOLCHAIN_EXTERNAL_CREATE_STAGING_LIB_SYMLINK) $(TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS) $(TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER) $(TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT) @@ -708,6 +719,7 @@ endef # and the target directory, we do everything within the # install-staging step, arbitrarily. define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_CMDS + $(TOOLCHAIN_EXTERNAL_CREATE_TARGET_LIB_SYMLINK) $(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LIBS) $(TOOLCHAIN_EXTERNAL_INSTALL_BFIN_FDPIC) $(TOOLCHAIN_EXTERNAL_INSTALL_BFIN_FLAT)