3d7b92ea50
This patch make the ABI mechanism available to shared libraries other than Genode's dynamic linker. It thereby allows us to introduce intermediate ABIs at the granularity of shared libraries. This is useful for slow-moving ABIs such as the libc's interface but it will also become handy for the package management. To implement the feature, the build system had to be streamlined a bit. In particular, archive dependencies and shared-lib dependencies are now handled separately, and the global list of 'SHARED_LIBS' is no more. Now, the variable with the same name holds the per-target list of shared libraries used by the target.
99 lines
3.4 KiB
Makefile
99 lines
3.4 KiB
Makefile
#
|
|
# Prevent execution of any rule contained in $(TARGET_MK) as default rule
|
|
#
|
|
all:
|
|
|
|
ACCUMULATE_MISSING_PORTS = 1
|
|
|
|
#
|
|
# Include common utility functions
|
|
#
|
|
include $(BASE_DIR)/mk/util.inc
|
|
|
|
#
|
|
# Include target build instructions to aquire library dependecies
|
|
#
|
|
PRG_DIR := $(dir $(TARGET_MK))
|
|
include $(TARGET_MK)
|
|
|
|
#
|
|
# Include lib-import description files
|
|
#
|
|
include $(foreach LIB,$(LIBS),$(call select_from_repositories,lib/import/import-$(LIB).mk))
|
|
|
|
#
|
|
# Add globally defined library supplements
|
|
#
|
|
include $(SPEC_FILES)
|
|
|
|
#
|
|
# Determine location of $(TARGET_MK) within 'src/', remove trailing slash
|
|
#
|
|
PRG_REL_DIR := $(subst $(REP_DIR)/src/,,$(PRG_DIR))
|
|
PRG_REL_DIR := $(PRG_REL_DIR:/=)
|
|
|
|
#
|
|
# Prevent generation of program rule if requirements are unsatisfied
|
|
#
|
|
UNSATISFIED_REQUIREMENTS = $(filter-out $(SPECS),$(REQUIRES))
|
|
ifneq ($(UNSATISFIED_REQUIREMENTS),)
|
|
all:
|
|
@$(ECHO) "Skip target $(PRG_REL_DIR) because it requires $(DARK_COL)$(UNSATISFIED_REQUIREMENTS)$(DEFAULT_COL)"
|
|
else
|
|
all: gen_prg_rule
|
|
endif
|
|
|
|
include $(LIB_PROGRESS_LOG)
|
|
LIBS_TO_VISIT = $(filter-out $(LIBS_READY),$(LIBS))
|
|
|
|
#
|
|
# Generate program rule
|
|
#
|
|
gen_prg_rule:
|
|
ifneq ($(LIBS),)
|
|
@for i in $(LIBS_TO_VISIT); do \
|
|
$(MAKE) $(VERBOSE_DIR) -f $(BASE_DIR)/mk/dep_lib.mk REP_DIR=$(REP_DIR) LIB=$$i; done
|
|
@(echo "DEP_A_$(TARGET).prg = $(foreach l,$(LIBS),\$${ARCHIVE_NAME($l)} \$$(DEP_A_$l))"; \
|
|
echo "DEP_SO_$(TARGET).prg = $(foreach l,$(LIBS),\$${SO_NAME($l)} \$$(DEP_SO_$l))"; \
|
|
echo "") >> $(LIB_DEP_FILE)
|
|
endif
|
|
ifneq ($(DEP_MISSING_PORTS),)
|
|
@(echo "MISSING_PORTS += $(DEP_MISSING_PORTS)"; \
|
|
echo "") >> $(LIB_DEP_FILE)
|
|
endif
|
|
@(echo "$(TARGET).prg: check_ports $(addsuffix .lib,$(LIBS))"; \
|
|
echo " @\$$(MKDIR) -p $(PRG_REL_DIR)"; \
|
|
echo " \$$(VERBOSE_MK)\$$(MAKE) $(VERBOSE_DIR) -C $(PRG_REL_DIR) -f \$$(BASE_DIR)/mk/prg.mk \\"; \
|
|
echo " REP_DIR=$(REP_DIR) \\"; \
|
|
echo " PRG_REL_DIR=$(PRG_REL_DIR) \\"; \
|
|
echo " BUILD_BASE_DIR=$(BUILD_BASE_DIR) \\"; \
|
|
echo " ARCHIVES=\"\$$(sort \$$(DEP_A_$(TARGET).prg))\" \\"; \
|
|
echo " SHARED_LIBS=\"\$$(sort \$$(DEP_SO_$(TARGET).prg))\" \\"; \
|
|
echo " SHELL=$(SHELL) \\"; \
|
|
echo " INSTALL_DIR=\"\$$(INSTALL_DIR)\""; \
|
|
echo "") >> $(LIB_DEP_FILE)
|
|
#
|
|
# Make 'all' depend on the target, which triggers the building of the target
|
|
# and the traversal of the target's library dependencies. But we only do so
|
|
# if the target does not depend on any library with unsatisfied build
|
|
# requirements. In such a case, the target cannot be linked anyway.
|
|
#
|
|
@(echo "ifeq (\$$(filter \$$(DEP_A_$(TARGET).prg:.lib.a=) \$$(DEP_SO_$(TARGET).prg:.lib.so=) $(LIBS),\$$(INVALID_DEPS)),)"; \
|
|
echo "all: $(TARGET).prg"; \
|
|
echo "endif") >> $(LIB_DEP_FILE)
|
|
#
|
|
# Normally, if the target depends on a library, which cannot be built (such
|
|
# libraries get recorded in the 'INVALID_DEPS' variable), we skip the target
|
|
# altogether. In some cases, however, we want to build all non-invalid
|
|
# libraries of a target regardless of whether the final target can be created
|
|
# or not. (i.e., for implementing the mechanism for building all libraries,
|
|
# see 'base/src/lib/target.mk'). This use case is supported via the
|
|
# 'FORCE_BUILD_LIBS' variable. If the 'target.mk' file assigns the value
|
|
# 'yes' to this variable, we build all non-invalid libraries regardless of
|
|
# the validity of the final target.
|
|
#
|
|
ifeq ($(FORCE_BUILD_LIBS),yes)
|
|
@(echo ""; \
|
|
echo "all: \$$(addsuffix .lib,\$$(filter-out \$$(INVALID_DEPS), $(LIBS)))") >> $(LIB_DEP_FILE)
|
|
endif
|