191 lines
5.8 KiB
Makefile
191 lines
5.8 KiB
Makefile
#
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# \brief Rules for building software that uses the GNU build tools
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# \author Norman Feske
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# \date 2011-02-02
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#
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# This file is meant to be included by 'target.mk' files. Instead of building
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# a normal Genode target, the 'target.mk' file will then trigger the build
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# of the contrib package specified with the 'PKG' variable. The build
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# consists to the following steps
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#
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# 1. Configuring the package by invoking the package's 'configure' script
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# with the arguments required for cross compiling the package for
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# Genode.
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# 2. Building the package by invoking the 'Makefile' generated by the
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# 'configure' script.
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#
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# Limitations
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# -----------
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#
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# In contrast to the Genode build system, library dependencies are not covered.
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# So if a library used by a package is changed, the package gets not relinked
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# automatically. In this case, 'make clean' must be invoked manually within the
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# build subdirectory of the package.
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#
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#
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# Use name of the directory hosting the 'target.mk' file as 'TARGET'
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# and 'PKG' by default.
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#
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TARGET ?= $(lastword $(subst /, ,$(PRG_DIR)))
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PKG ?= $(TARGET)
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LIBS += libc libm
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PWD = $(shell pwd)
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#
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# Detect missing preparation ofpackage
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#
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ifeq ($(PKG_DIR),)
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REQUIRES += prepare_$(PKG)
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endif
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#
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# Verbose build
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#
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ifeq ($(VERBOSE),)
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MAKE_VERBOSE = V=1
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CONFIGURE_VERBOSE =
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#
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# Non-verbose build
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#
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else
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MAKE_VERBOSE = -s
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CONFIGURE_VERBOSE = --quiet
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# filter for configure output of package
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CONFIGURE_OUTPUT_FILTER = > stdout.log 2> stderr.log ||\
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(echo "Error: configure script of $(PKG) failed" && \
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cat stderr.log && false)
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# filter for make output of package
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BUILD_OUTPUT_FILTER = 2>&1 | sed "s/^/ [$(PKG)] /"
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endif
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ifeq ($(findstring arm, $(SPECS)), arm)
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CONFIGURE_ARGS += --host arm-none-eabi
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else
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ifeq ($(findstring x86, $(SPECS)), x86)
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CONFIGURE_ARGS += --host x86_64-pc-elf
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endif
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endif
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CONFIGURE_ARGS += --srcdir=$(PKG_DIR)
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CONFIGURE_ARGS += --prefix /
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CONFIG_GUESS_SCRIPT = $(PKG_DIR)/config.guess
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ifneq ($(wildcard $(CONFIG_GUESS_SCRIPT)),)
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CONFIGURE_ARGS += --build $(shell $(CONFIG_GUESS_SCRIPT))
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else
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CONFIGURE_ARGS += --build x86-linux
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endif
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CONFIGURE_ARGS += $(CONFIGURE_VERBOSE)
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LDFLAGS += -nostdlib $(CXX_LINK_OPT) $(CC_MARCH) -Wl,-T$(LD_SCRIPT_DYN) \
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-Wl,--dynamic-linker=$(DYNAMIC_LINKER).lib.so \
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-Wl,--eh-frame-hdr
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LIBTOOLFLAGS = --preserve-dup-deps
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LIBGCC = $(shell $(CC) $(CC_MARCH) -print-libgcc-file-name)
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CPPFLAGS += -nostdinc $(INCLUDES)
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CPPFLAGS += -D_GNU_SOURCE=1
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# flags to be used in both CFLAGS and CXXFLAGS
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COMMON_CFLAGS_CXXFLAGS += -ffunction-sections $(CC_OLEVEL) $(CC_MARCH)
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COMMON_CFLAGS_CXXFLAGS += -g
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CFLAGS += $(COMMON_CFLAGS_CXXFLAGS)
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CXXFLAGS += $(COMMON_CFLAGS_CXXFLAGS)
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#
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# We have to specify 'LINK_ITEMS' twice to resolve inter-library dependencies.
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# Unfortunately, the use of '--start-group' and '--end-group' does not suffice
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# in all cases because 'libtool' strips those arguments from the 'LIBS' variable.
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#
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# Furthermore, 'libtool' reorders library names on the command line in a way that
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# shared libraries appear before static libraries. This has the unfortunate effect
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# that the program's entry symbol 'Genode::component_entry_point' in the static
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# library 'component_entry_point.lib.a' is not found anymore. Passing the static
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# library names as linker arguments (-Wl,...) works around this problem, because
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# 'libtool' keeps command line arguments before the shared library names.
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#
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LDLIBS_A = $(filter %.a, $(sort $(LINK_ITEMS)) $(EXT_OBJECTS) $(LIBGCC))
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LDLIBS_SO = $(filter %.so,$(sort $(LINK_ITEMS)) $(EXT_OBJECTS) $(LIBGCC))
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comma := ,
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LDLIBS += $(addprefix -Wl$(comma),$(LDLIBS_A)) $(LDLIBS_SO) $(LDLIBS_A)
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#
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# Re-configure the Makefile if the Genode build environment changes
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#
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Makefile reconfigure: $(MAKEFILE_LIST)
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#
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# Invoke configure script with the Genode environment
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#
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Makefile reconfigure: env.sh
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@$(MSG_CONFIG)$(TARGET)
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$(VERBOSE)source env.sh && $(PKG_DIR)/configure $(ENV) $(CONFIGURE_ARGS) $(CONFIGURE_OUTPUT_FILTER)
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env.sh:
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$(VERBOSE)rm -f $@
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$(VERBOSE)echo "export CC='$(CC)'" >> $@
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$(VERBOSE)echo "export CXX='$(CXX)'" >> $@
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$(VERBOSE)echo "export LD='$(LD)'" >> $@
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$(VERBOSE)echo "export AR='$(AR)'" >> $@
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$(VERBOSE)echo "export NM='$(NM)'" >> $@
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$(VERBOSE)echo "export RANLIB='$(RANLIB)'" >> $@
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$(VERBOSE)echo "export STRIP='$(STRIP)'" >> $@
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$(VERBOSE)echo "export CPPFLAGS='$(CPPFLAGS)'" >> $@
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$(VERBOSE)echo "export CFLAGS='$(CFLAGS)'" >> $@
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$(VERBOSE)echo "export CXXFLAGS='$(CXXFLAGS)'" >> $@
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$(VERBOSE)echo "export LDFLAGS='$(LDFLAGS)'" >> $@
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$(VERBOSE)echo "export LIBS='$(LDLIBS)'" >> $@
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$(VERBOSE)echo "export LIBTOOLFLAGS='$(LIBTOOLFLAGS)'" >> $@
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$(VERBOSE)echo "export PS1='<gnu_build>'" >> $@
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#
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# Invoke the 'Makefile' generated by the configure script
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#
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# The 'MAN=' argument prevent manual pages from being created. This would
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# produce an error when the package uses the 'help2man' tool. This tool
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# tries to extract the man page of a program by executing it with the
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# '--help' argument on the host. However, we cannot run Genode binaries
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# this way.
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#
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built.tag: env.sh Makefile
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@$(MSG_BUILD)$(TARGET)
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$(VERBOSE)source env.sh && $(MAKE) $(MAKE_ENV) $(MAKE_VERBOSE) MAN= $(BUILD_OUTPUT_FILTER)
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@touch $@
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INSTALL_TARGET ?= install-strip
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installed.tag: built.tag
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@$(MSG_INST)$(TARGET)
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$(VERBOSE)source env.sh && $(MAKE) $(MAKE_ENV) $(MAKE_VERBOSE) $(INSTALL_TARGET) DESTDIR=$(PWD)/install MAN= >> stdout.log 2>> stderr.log
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$(VERBOSE)rm -f $(INSTALL_DIR)/$(TARGET)
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$(VERBOSE)ln -sf $(PWD)/install $(INSTALL_DIR)/$(TARGET)
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@touch $@
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$(TARGET): installed.tag
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@touch $@
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#
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# The clean rule is expected to be executed within the 3rd-party build
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# directory. The check should prevent serious damage if this condition
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# is violated (e.g., while working on the build system).
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#
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ifeq ($(notdir $(PWD)),$(notdir $(PRG_DIR)))
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clean_dir:
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$(VERBOSE)rm -rf $(PWD)/* $(PWD)/.*
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clean_prg_objects: clean_dir
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endif
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