ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-06-20 16:10:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

mk: link core to library archive instead of .o file

Browse Source 
Do not link base and core libraries into on large relocatable .o file,
which is linked later to core - causing long link times. Create an
independent library archive out of the base and core libraries that can
be linked faster.

issue #4027
This commit is contained in:
Sebastian Sumpf
2021-02-19 15:23:49 +01:00
committed by Norman Feske
parent 64165d829e
commit f68e655312
16 changed files with 49 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
repos/base/src/core/target.inc
View File

@ -1,27 +1,43 @@
TARGET ?= core
CORE_OBJ ?= core.o
CORE_LIB ?= core.a
$(TARGET):
@true
ifneq ($(INSTALL_DIR),)
ifneq ($(DEBUG_DIR),)
$(TARGET): $(INSTALL_DIR)/$(CORE_OBJ) $(DEBUG_DIR)/$(CORE_OBJ)
$(TARGET): $(INSTALL_DIR)/$(CORE_LIB) $(DEBUG_DIR)/$(CORE_LIB)
$(CORE_OBJ).stripped: $(CORE_OBJ)
$(VERBOSE)$(STRIP) --strip-debug -o $@ $<
$(CORE_LIB).stripped: $(CORE_LIB)
$(VERBOSE)$(STRIP) --strip-unneeded -o $@ $<
$(INSTALL_DIR)/$(CORE_OBJ) : $(CORE_OBJ).stripped
$(VERBOSE)ln -sf $(CURDIR)/$< $(INSTALL_DIR)/$(CORE_OBJ)
$(INSTALL_DIR)/$(CORE_LIB) : $(CORE_LIB).stripped
$(VERBOSE)ln -sf $(CURDIR)/$< $(INSTALL_DIR)/$(CORE_LIB)
$(DEBUG_DIR)/$(CORE_OBJ) : $(CORE_OBJ)
$(VERBOSE)ln -sf $(CURDIR)/$< $(DEBUG_DIR)/$(CORE_OBJ)
$(DEBUG_DIR)/$(CORE_LIB) : $(CORE_LIB)
$(VERBOSE)ln -sf $(CURDIR)/$< $(DEBUG_DIR)/$(CORE_LIB)
endif
endif
.PHONY: $(CORE_OBJ)
$(CORE_OBJ):
$(VERBOSE)$(LD) $(LD_MARCH) -u _start --whole-archive -r $(LINK_ITEMS) $(LIBCXX_GCC) -o $@
#
# Create an archive from base and core archive objects, this archive is
# later linked to core. This gives better performance than the old way where we
# would link the archives into a relocatable object file (ld -r) that in turn
# was linked to core - leading to a large object file with many relocations
# causing long link times (especially on base-hw)
#
# We create the archive by piping an MRI script to ar -M
# "create " - create library
# "addlib" - add $(LINK_ITEMS)
# "save" - save and overwrite library
.PHONY: $(CORE_LIB)
$(CORE_LIB):
$(VERBOSE)(echo "create $@"; \
echo -e "$(addprefix \naddlib ,$(LINK_ITEMS))"; \
echo "save"; \
echo "end"; \
) | $(AR) -M
clean cleanall:
$(VERBOSE)rm -f $(CORE_OBJ) $(CORE_OBJ).stripped
$(VERBOSE)rm -f $(CORE_LIB) $(CORE_LIB).stripped