# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*- # # This file is part of the LibreOffice project. # # This Source Code Form is subject to the terms of the Mozilla Public # License, v. 2.0. If a copy of the MPL was not distributed with this # file, You can obtain one at http://mozilla.org/MPL/2.0/. # $(eval $(call gb_ExternalProject_ExternalProject,cairo)) $(eval $(call gb_ExternalProject_use_external_project,cairo,pixman)) $(eval $(call gb_ExternalProject_use_externals,cairo,\ fontconfig \ freetype \ libpng \ zlib \ )) $(eval $(call gb_ExternalProject_register_targets,cairo,\ build \ )) # Including -rtlib=compiler-rt in pixman_LIBS is a BAD HACK: At least when compiling with Clang # -fsanitize=undefined on Linux x86-64, the generated code references __muloti4, which is an # extension provided by libclang_rt.builtins-x86_64.a runtime, but not by GCC's libgcc_s.so.1 (which # ultimately boils down to a bug in LLVM, I would say). I am not sure whether it should in general # work to mix uses of the (default on Linux, at least) GCC libgcc_s and LLVM's libclang_rt.builtins # runtime libraries in one process, but for this specific case of libcairo.so it appears to work # well: For one, the only symbol referenced by libcairo.so from the runtime library is __muloti4; # for another, at least in my LLVM build, lib/clang/12.0.0/lib/linux/libclang_rt.builtins-x86_64.a # is only provided as a static archive; so libcairo.so will only contain a "harmless" copy of # __muloti4 and not have a DT_NEEDED of any libclang_rt.builtins dynamic library that it would pull # in at runtime. # But passing -rtlib=compiler-rt into cairo's configure via the more obvious LDFLAGS would fail at # least when building with -fsanitize=address and -fsanitize=undefined, as then the executable # compiled by configure when "checking whether the C compiler works" would reference # _Unwind_Backtrace etc. that are provided by GCC's libgcc_s.so.1 but not by LLVM's # libclang_rt.builtins-x86_64.a (and whatever the reason for that inconsistency). So # -rtlib=compiler-rt must be passed just into the linking of libcairo.so, but not generally into # cairo's configure. And pixman_LIBS happens to offer that. (The -Wc is necessary so that libtool # does not throw away the -rtlib=compiler-rt which it does not understand.) $(call gb_ExternalProject_get_state_target,cairo,build) : $(call gb_Trace_StartRange,cairo,EXTERNAL) $(call gb_ExternalProject_run,build,\ $(gb_RUN_CONFIGURE) ./configure \ $(if $(debug),STRIP=" ") \ $(if $(filter ANDROID iOS,$(OS)),CFLAGS="$(if $(debug),-g) $(ZLIB_CFLAGS) $(gb_VISIBILITY_FLAGS)") \ $(if $(filter EMSCRIPTEN,$(OS)),CFLAGS=" $(ZLIB_CFLAGS) -Wno-enum-conversion $(gb_EMSCRIPTEN_CPPFLAGS)" --enable-pthread=yes PTHREAD_LIBS="") \ $(if $(filter-out EMSCRIPTEN ANDROID iOS,$(OS)), \ CFLAGS="$(CFLAGS) $(call gb_ExternalProject_get_build_flags,cairo) $(ZLIB_CFLAGS)" \ LDFLAGS="$(call gb_ExternalProject_get_link_flags,cairo)" \ ) \ $(if $(filter ANDROID iOS,$(OS)),PKG_CONFIG=./dummy_pkg_config) \ LIBS="$(ZLIB_LIBS)" \ $(if $(filter -fsanitize=%,$(LDFLAGS)),LDFLAGS="$(LDFLAGS) -fuse-ld=bfd") \ pixman_CFLAGS="-I$(call gb_UnpackedTarball_get_dir,pixman)/pixman -pthread" \ pixman_LIBS="-L$(call gb_UnpackedTarball_get_dir,pixman)/pixman/.libs -lpixman-1 \ $(if $(filter LINUX,$(OS)),-Wl$(COMMA)-z$(COMMA)origin \ -Wl$(COMMA)-rpath$(COMMA)\\\$$\$$ORIGIN) \ $(if $(filter -fsanitize=%,$(CC)), \ $(if $(filter LINUX-X86_64-TRUE,$(OS)-$(CPUNAME)-$(COM_IS_CLANG)), \ -Wc$(COMMA)-rtlib=compiler-rt))" \ png_REQUIRES="trick_configure_into_using_png_CFLAGS_and_LIBS" \ png_CFLAGS="$(LIBPNG_CFLAGS)" png_LIBS="$(LIBPNG_LIBS)" \ $(if $(SYSTEM_FREETYPE),,FREETYPE_CFLAGS="-I$(call gb_UnpackedTarball_get_dir,freetype)/include") \ $(if $(SYSTEM_FONTCONFIG),,FONTCONFIG_CFLAGS="-I$(call gb_UnpackedTarball_get_dir,fontconfig)") \ $(if $(verbose),--disable-silent-rules,--enable-silent-rules) \ $(if $(filter TRUE,$(DISABLE_DYNLOADING)),--disable-shared,--disable-static) \ $(if $(filter EMSCRIPTEN ANDROID iOS,$(OS)),--disable-xlib --disable-xcb,$(if $(filter TRUE,$(DISABLE_GUI)),--disable-xlib --disable-xcb,--enable-xlib --enable-xcb)) \ $(if $(filter iOS,$(OS)),--enable-quartz --enable-quartz-font) \ --disable-valgrind \ $(if $(filter iOS,$(OS)),--disable-ft,--enable-ft --enable-fc) \ --disable-svg --enable-gtk-doc=no --enable-test-surfaces=no \ $(gb_CONFIGURE_PLATFORMS) \ $(if $(CROSS_COMPILING),$(if $(filter INTEL ARM,$(CPUNAME)),ac_cv_c_bigendian=no ax_cv_c_float_words_bigendian=no)) \ $(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO) \ && cd src && $(MAKE) \ ) $(call gb_Trace_EndRange,cairo,EXTERNAL) # vim: set noet sw=4 ts=4: office-7-6+backports'>distro/collabora/libreoffice-7-6+backports LibreOffice 核心代码仓库文档基金会
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