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Build-system support for building a single library 

This patch equips the build system with the feature of building an
individual library with its dependencies by specifying the library
as 'LIB' argument. E.g., 'make LIB=libc' builds the libc.
This commit is contained in:
Norman Feske 2016-05-17 20:28:44 +02:00
parent a9e9d9e499
commit a15a86b024
1 changed files with 25 additions and 2 deletions
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27
tool/builddir/build.mk
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@ -195,7 +195,7 @@ endif
# we would need to spawn one additional shell per target, which would take
# 10-20 percent more time.
#
traverse_dependencies: $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
traverse_target_dependencies: $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
$(VERBOSE_MK) \
for target in $(TARGETS_TO_VISIT); do \
for rep in $(REPOSITORIES); do \
@ -209,8 +209,31 @@ traverse_dependencies: $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
done; \
done; $$result;
#
# Generate content of libdep file if manually building a single library
# specified via the 'LIB' argument.
#
traverse_lib_dependencies: $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
$(VERBOSE_MK) \
$(MAKE) $(VERBOSE_DIR) -f $(BASE_DIR)/mk/dep_lib.mk \
REP_DIR=$$rep LIB=$(LIB) \
BUILD_BASE_DIR=$(BUILD_BASE_DIR) \
SHELL=$(SHELL) \
DARK_COL="$(DARK_COL)" DEFAULT_COL="$(DEFAULT_COL)"; \
echo "all: $(LIB).lib" >> $(LIB_DEP_FILE); \
.PHONY: $(LIB_DEP_FILE)
$(LIB_DEP_FILE): traverse_dependencies
#
# Depending on whether the top-level target is a list of targets or a
# single library, we populate the LIB_DEP_FILE differently.
#
ifeq ($(LIB),)
$(LIB_DEP_FILE): traverse_target_dependencies
else
$(LIB_DEP_FILE): traverse_lib_dependencies
endif
##
## Second stage: build targets based on the result of the first stage