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4da52517c1
This patch removes the component_entry_point library, which used to proved a hook for the libc to intercept the call of the 'Component::construct' function. The mechansim has several shortcomings (see the discussion in the associated issue) and was complex. So we eventually discarded the approach in favor of the explicit handling of the startup. A regular Genode component provides a 'Component::construct' function, which is determined by the dynamic linker via a symbol lookup. For the time being, the dynamic linker falls back to looking up a 'main' function if no 'Component::construct' function could be found. The libc provides an implementation of 'Component::construct', which sets up the libc's task handling and finally call the function 'Libc::Component::construct' from the context of the appllication task. This function is expected to be provided by the libc-using application. Consequently, Genode components that use the libc have to implement the 'Libc::Component::construct' function. The new 'posix' library provides an implementation of 'Libc::Component::construct' that calls a main function. Hence, POSIX programs that merely use the POSIX API merely have to add 'posix' to the 'LIBS' declaration in their 'target.mk' file. Their execution starts at 'main'. Issue #2199
130 lines
3.9 KiB
PHP
130 lines
3.9 KiB
PHP
# prevent import file to be included twice, for example via import-qt5_gui.mk
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# and import-qt5_core.mk
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ifeq ($(QT5_IMPORTED),)
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QT5_IMPORTED = true
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# hook for selectively skipping qt5 builds by the buildbot
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ifneq ($(INHIBIT_QT5),)
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REQUIRES += removal_of_INHIBIT_QT5_env_var
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endif
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# identify the qt5 repository by searching for a file that is unique for qt5
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QT5_REP_DIR := $(call select_from_repositories,lib/import/import-qt5.inc)
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QT5_REP_DIR := $(realpath $(dir $(QT5_REP_DIR))../..)
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include $(QT5_REP_DIR)/lib/mk/qt5_version.inc
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QT5_PORT_DIR := $(call select_from_ports,qt5)
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QT5_CONTRIB_DIR := $(QT5_PORT_DIR)/src/lib/qt5/$(QT5)
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QT5_INC_DIR := $(QT5_REP_DIR)/src/lib/qt5/qtbase/src/corelib/global \
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$(QT5_CONTRIB_DIR)/qtbase/src/corelib/global \
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$(QT5_REP_DIR)/include/qt5 \
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$(QT5_REP_DIR)/include/qt5/qtbase \
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$(QT5_CONTRIB_DIR)/qtbase/include \
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$(QT5_CONTRIB_DIR)/qtbase/mkspecs/genode-g++ \
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INC_DIR += $(QT5_INC_DIR)
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# extracted from qt.prf
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QT_DEFINES += -DQT_STATICPLUGIN
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QT_DEFINES += -D__GENODE__
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#
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# Prevent inclusion of non-existent 'features.h' from 'bits/os_defines.h'
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# header that comes with the Codesourcery ARM tool chain.
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#
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QT_DEFINES += -D_GLIBCXX_OS_DEFINES
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#
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# When using the Codesourcery tool chain for ARM, the compiler provides a
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# built-in definition for '__linux__', which is obviously wrong when using the
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# compiler for Genode. Unfortunately, Webkit tests for this definition in
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# 'JavaScriptCore/wtf/Platform.h'. To prevent webkit from drawing wrong
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# conclusions, we explicitly undefine '__linux__'.
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#
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QT_DEFINES += -U__linux__
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CC_OPT += $(QT_DEFINES)
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SOURCES_FILTERED = $(filter-out $(SOURCES_FILTER_OUT), $(SOURCES))
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HEADERS_FILTERED = $(filter-out $(HEADERS_FILTER_OUT), $(HEADERS))
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# add sources defined in qmake project files
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SRC_CC += $(SOURCES_FILTERED)
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# handle moc-headers, resources and ui descriptions
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$(addsuffix .o,$(basename $(SRC_CC))): $(addprefix ui_,$(FORMS:.ui=.h))
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SRC_CC_QT_GENERATED = $(addprefix moc_,$(HEADERS_FILTERED:.h=.cpp)) \
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$(addprefix qrc_,$(RESOURCES:.qrc=.cpp))
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.SECONDARY: $(SRC_CC_QT_GENERATED)
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SRC_CC += $(SRC_CC_QT_GENERATED)
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#
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# Locations of moc, rcc, and uic binaries
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#
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MOC = $(BUILD_BASE_DIR)/tool/qt5/moc/moc
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RCC = $(BUILD_BASE_DIR)/tool/qt5/rcc/rcc
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UIC = $(BUILD_BASE_DIR)/tool/qt5/uic/uic
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# moc rules
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moc_%.cpp: %.h $(MOC)
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$(MSG_CONVERT)$@
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$(VERBOSE) $(MOC) $(QT_DEFINES) $(addprefix -I,$(QT5_INC_DIR)) $< -o $@
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%.moc: %.cpp $(MOC)
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$(MSG_CONVERT)$@
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$(VERBOSE) $(MOC) $(QT_DEFINES) $(addprefix -I,$(QT5_INC_DIR)) $< -o $@
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# rcc rule
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qrc_%.cpp: %.qrc $(RCC)
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$(MSG_CONVERT)$@
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$(VERBOSE) $(RCC) -name $(basename $(notdir $<)) $< -o $@
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# uic rule
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ui_%.h: %.ui $(UIC)
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$(MSG_CONVERT)$@
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$(VERBOSE) $(UIC) $< -o $@
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# add include dirs for QT5-specific genode addons
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INC_DIR += $(QT5_REP_DIR)/include/qt5/genode
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# add C++ include dirs and libs
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#
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# We cannot just extend the 'LIBS' variable here because 'import-*.mk' are
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# included (in 'base/mk/lib.mk') by iterating through the elements of the
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# 'LIBS' variable. Hence, we also need to manually import the stdlib snippet.
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#
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LIBS += stdcxx gallium
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include $(call select_from_repositories,lib/import/import-stdcxx.mk)
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include $(call select_from_repositories,lib/import/import-gallium.mk)
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# custom main() thread stack size support via main() wrapper
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ifeq ($(findstring -DQT_MAIN_STACK_SIZE, $(CC_CXX_OPT)), -DQT_MAIN_STACK_SIZE)
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SRC_CC += qt_main.cc
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vpath qt_main.cc $(QT5_REP_DIR)/src/lib/qt5
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endif
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# set QT_ARCH definition according to the SPECS variable
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ifneq ($(filter x86_32,$(SPECS)),)
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QT_DEFINES += -DQT_ARCH_I386
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endif
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ifneq ($(filter x86_64,$(SPECS)),)
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QT_DEFINES += -DQT_ARCH_X86_64
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endif
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ifneq ($(filter arm,$(SPECS)),)
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QT_DEFINES += -DQT_ARCH_ARMV6
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endif
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# remove generated files in clean rules
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clean cleanall: clean_rule
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clean_rule:
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$(VERBOSE)$(RM) -f $(SRC_CC_QT_GENERATED)
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$(VERBOSE)$(RM) -f $(SOURCES_FILTERED:.cpp=.moc)
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$(VERBOSE)$(RM) -f $(addprefix ui_,$(FORMS:.ui=.h))
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endif
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