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Adapt to LLVM 15 trunk libc++ dropping std::unary_/binary_function
...for C++17 and beyond with
<681cde7dd8>
"[libc++] Complete the implementation of N4190". (Unless explicitly opted-in
with _LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION. This is similar to the
MSVC standard library needing _HAS_AUTO_PTR_ETC=1 to enable those zombie
functions for quite some time now. Only libstdc++ still supports them
unconditionally.)
Most uses of those zombie functions across LibreOffice itself and the bundled
external/* are indirectly within Boost include files. And many (but not all) of
those Boost include files only use those zombie functions conditionally, based
on BOOST_NO_CXX98_FUNCTION_BASE. For the (Dinkumware-derived) MSVC standard
library, workdir/UnpackedTarball/boost/boost/config/stdlib/dinkumware.hpp
already defined BOOST_NO_CXX98_FUNCTION_BASE. So add a patch to define that
also in workdir/UnpackedTarball/boost/boost/config/stdlib/libcpp.hpp (for all of
C++11 and beyond, even if those functions were still available as deprecated in
C++11 and C++14, but which shouldn't make a difference with our C++17 baseline
anyway; only make sure that things still work if those Boost include files ever
get used by code built with gb_CXX03FLAGS). (Patching our bundled
external/boost of course doesn't help when building with such a new libc++ and
--with-system-boost against an unpatched Boost, but lets consider that "not my
problem". Also, one could always use a sledgehammer like passing
CPPFLAGS=-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION into gbuild in
such a case.)
Then there are two places that include boost/multi_array.hpp, which indirectly
includes workdir/UnpackedTarball/boost/boost/functional.hpp, which still uses
those zombie functions for non-MSVC builds (at least in the bundled
Boost 1.79.0). Lets do a targeted
_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION in those cases.
(Alternatively, we could patch
workdir/UnpackedTarball/boost/boost/functional.hpp. Also, I decided to make
loplugin:reservedid support the new suppression mechanism, rather than extending
its existing ignorelist even further.)
And then there is external/clucene using those zombie functions even outside of
a Boost include file, so extend the existing hack there that was already needed
for MSVC. (And adapt the accompanying comment: For one, we are unconditionally
"in C++17 mode" by now. And for another, the exact places where
external/clucene uses those functions have apparently changed over time.)
Change-Id: Id0eec3bedcfddae86b16d33c02c7b5d3b3f8a16f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136579
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
This commit is contained in:
Stephan Bergmann
@ -113,7 +113,7 @@ void ReservedId::postRun() {
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for (;;) {
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if (d->getKind() == MacroDirective::MD_Define) {
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auto loc = d->getLocation();
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if (loc.isValid() && !ignoreLocation(loc)) {
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if (loc.isValid() && !ignoreLocation(loc) && !suppressWarningAt(loc)) {
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auto file = getFilenameOfLocation(loc);
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if (!loplugin::isSameUnoIncludePathname(
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file,
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2
external/boost/UnpackedTarball_boost.mk
vendored
2
external/boost/UnpackedTarball_boost.mk
vendored
@ -31,6 +31,8 @@ boost_patches += windows-no-utf8-locales.patch.0
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boost_patches += msvc2017.patch.0
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boost_patches += libc++.patch.0
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$(eval $(call gb_UnpackedTarball_UnpackedTarball,boost))
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$(eval $(call gb_UnpackedTarball_set_tarball,boost,$(BOOST_TARBALL)))
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12
external/boost/libc++.patch.0
vendored
Normal file
12
external/boost/libc++.patch.0
vendored
Normal file
@ -0,0 +1,12 @@
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--- boost/config/stdlib/libcpp.hpp
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+++ boost/config/stdlib/libcpp.hpp
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@@ -167,5 +167,9 @@
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#if !defined(BOOST_NO_CXX14_HDR_SHARED_MUTEX) && (_LIBCPP_VERSION < 5000)
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# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
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#endif
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+
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+#if __cplusplus >= 201103
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+# define BOOST_NO_CXX98_FUNCTION_BASE
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+#endif
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// --- end ---
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10
external/clucene/Library_clucene.mk
vendored
10
external/clucene/Library_clucene.mk
vendored
@ -31,11 +31,17 @@ $(eval $(call gb_Library_add_defs,clucene,\
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-Dclucene_contribs_lib_EXPORTS \
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))
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# Needed when building against MSVC in C++17 mode, as
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# workdir/UnpackedTarball/clucene/src/core/CLucene/util/Equators.h uses std::binary_function:
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# Needed when building against either libc++ or MSVC's standard library (including clang-cl builds),
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# as e.g. workdir/UnpackedTarball/clucene/src/core/CLucene/util/_Arrays.h uses std::binary_function:
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ifeq ($(HAVE_LIBCPP),TRUE)
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$(eval $(call gb_Library_add_defs,clucene, \
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-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION \
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))
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else ifeq ($(COM),MSC)
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$(eval $(call gb_Library_add_defs,clucene, \
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-D_HAS_AUTO_PTR_ETC=1 \
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))
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endif
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ifeq ($(OS),LINUX)
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$(eval $(call gb_Library_add_libs,clucene,\
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10
external/libmspub/ExternalProject_libmspub.mk
vendored
10
external/libmspub/ExternalProject_libmspub.mk
vendored
@ -22,6 +22,14 @@ $(eval $(call gb_ExternalProject_use_externals,libmspub,\
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zlib \
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))
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libmspub_CPPFLAGS := $(CPPFLAGS) $(ICU_UCHAR_TYPE) $(BOOST_CPPFLAGS)
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# Needed when workdir/UnpackedTarball/libmspub/src/lib/MSPUBCollector.cpp includes Boost 1.79.0
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# boost/multi_array.hpp, which indirectly includes
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# workdir/UnpackedTarball/boost/boost/functional.hpp using std::unary_/binary_function:
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ifeq ($(HAVE_LIBCPP),TRUE)
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libmspub_CPPFLAGS += -D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION
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endif
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$(call gb_ExternalProject_get_state_target,libmspub,build) :
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$(call gb_Trace_StartRange,libmspub,EXTERNAL)
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$(call gb_ExternalProject_run,build,\
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@ -37,7 +45,7 @@ $(call gb_ExternalProject_get_state_target,libmspub,build) :
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--disable-weffc \
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$(if $(verbose),--disable-silent-rules,--enable-silent-rules) \
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CXXFLAGS="$(gb_CXXFLAGS) $(call gb_ExternalProject_get_build_flags,libmspub)" \
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CPPFLAGS="$(CPPFLAGS) $(ICU_UCHAR_TYPE) $(BOOST_CPPFLAGS)" \
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CPPFLAGS="$(libmspub_CPPFLAGS)" \
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LDFLAGS="$(call gb_ExternalProject_get_link_flags,libmspub)" \
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$(gb_CONFIGURE_PLATFORMS) \
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&& $(MAKE) \
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@ -9,6 +9,23 @@
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#include <sal/config.h>
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// Needed since LLVM 15 libc++ (hence the ignored -Wunused-macros for older libc++) when
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// #include <boost/multi_array.hpp> below includes Boost 1.79.0
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// workdir/UnpackedTarball/boost/boost/functional.hpp using std::unary_function, but must
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// come very early here in case <functional> is already (indirectly) included earlier:
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#include <config_libcxx.h>
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#if HAVE_LIBCPP
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#if defined __clang__
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunused-macros"
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#endif
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// [-loplugin:reservedid]:
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#define _LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION
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#if defined __clang__
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#pragma clang diagnostic pop
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#endif
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#endif
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#include <string_view>
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#include <config_features.h>
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