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libcxx[abi]: remove

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This is a neat project, but offers no benefit to OpenWrt. The initial
reason for it was to be a replacement for libstdcpp as it is smaller
and lacks compatibility for C++98. Unfortunately, compiling several
packages with it results in larger ipk sizes.

While not a member of the packages feed, this will be moved to
packages-abandoned to keep it somewhere.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
This commit is contained in:
Rosen Penev 2020-12-05 01:21:05 -08:00 committed by Paul Spooren
parent 0ba83a7577
commit f7d7a3a18b
7 changed files with 2 additions and 210 deletions
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4
config/Config-build.in
View File

@ -215,10 +215,6 @@ menu "Global build settings"
config USE_UCLIBCXX
bool "uClibc++"
config USE_LIBCXX
bool "libc++"
depends on !USE_UCLIBC
config USE_LIBSTDCXX
bool "libstdc++"
endchoice

12
include/uclibc++.mk
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@ -4,8 +4,8 @@ ifndef DUMP
endif
endif
PKG_PREPARED_DEPENDS += CONFIG_USE_UCLIBCXX CONFIG_USE_LIBCXX
CXX_DEPENDS = +USE_UCLIBCXX:uclibcxx +USE_LIBCXX:libcxx +USE_LIBSTDCXX:libstdcpp
PKG_PREPARED_DEPENDS += CONFIG_USE_UCLIBCXX
CXX_DEPENDS = +USE_UCLIBCXX:uclibcxx +USE_LIBSTDCXX:libstdcpp
ifneq ($(CONFIG_USE_UCLIBCXX),)
ifneq ($(CONFIG_CCACHE),)
@ -14,11 +14,3 @@ ifneq ($(CONFIG_USE_UCLIBCXX),)
TARGET_CXX=g++-uc
endif
endif
ifneq ($(CONFIG_USE_LIBCXX),)
ifneq ($(CONFIG_CCACHE),)
TARGET_CXX_NOCACHE=g++-libcxx
else
TARGET_CXX=g++-libcxx
endif
endif

66
package/libs/libcxx/Makefile
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@ -1,66 +0,0 @@
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=libcxx
PKG_VERSION:=10.0.0
PKG_RELEASE:=1
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).src.tar.xz
PKG_SOURCE_URL:=https://github.com/llvm/llvm-project/releases/download/llvmorg-$(PKG_VERSION)
PKG_HASH:=270f8a3f176f1981b0f6ab8aa556720988872ec2b48ed3b605d0ced8d09156c7
PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION).src
PKG_MAINTAINER:=Rosen Penev <rosenp@gmail.com>
PKG_LICENSE:=MIT
PKG_LICENSE_FILES:=LICENSE.txt
PKG_BUILD_PARALLEL:=1
PKG_BUILD_DEPENDS:=libcxxabi
CMAKE_BINARY_SUBDIR:=build
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/cmake.mk
define Package/libcxx
SECTION:=libs
CATEGORY:=Libraries
TITLE:=LLVM libstdc++
URL:=https://libcxx.llvm.org/
DEPENDS:=+libatomic +libpthread
endef
define Package/libcxx/description
libc++ is an implementation of the C++ standard library, targeting C++11, C++14 and above.
endef
CMAKE_OPTIONS += \
-DLIBCXX_CXX_ABI="libcxxabi" \
-DLIBCXX_ENABLE_ASSERTIONS=OFF \
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
-DLIBCXX_INCLUDE_DOCS=OFF \
-DLIBCXX_INCLUDE_TESTS=OFF \
-DLIBCXX_LIBDIR_SUFFIX="" \
-DLIBCXX_STANDALONE_BUILD=ON \
-DLIBCXX_HAS_MUSL_LIBC=$(if $(CONFIG_USE_MUSL),ON,OFF)
TARGET_CXXFLAGS += -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -Wno-attributes -flto
TARGET_LDFLAGS += -Wl,--gc-sections,--as-needed
define Build/InstallDev
$(call Build/InstallDev/cmake,$(1))
$(CP) files/g++-libcxx $(TOOLCHAIN_DIR)/bin/
$(SED) 's,CXX,$(TARGET_CXX),g' $(TOOLCHAIN_DIR)/bin/g++-libcxx
endef
define Package/libcxx/install
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib/libc++.so.* $(1)/usr/lib/
endef
$(eval $(call BuildPackage,libcxx))

19
package/libs/libcxx/files/g++-libcxx
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@ -1,19 +0,0 @@
#!/bin/sh
WRAPPER_INCLUDEDIR="-I$STAGING_DIR/usr/include/c++/v1"
WRAPPER_LIBDIR="-L$STAGING_DIR/usr/lib"
WRAPPER_LIBS="-lc -lgcc_s -lssp_nonshared"
WRAPPER_OPTIONS=""
WRAPPER_INCLIB="Y"
for arg
do
case "$arg" in
-c|-E|-S) WRAPPER_INCLIB="N" ;;
-static) [ "$WRAPPER_LIBS" != "-lc -lgcc_s -lssp_nonshared -lgcc_eh" ] && WRAPPER_LIBS="-lc -lgcc_s -lssp_nonshared -lgcc_eh" ;;
esac
done
[ "$WRAPPER_INCLIB" = "Y" ] && WRAPPER_OPTIONS="-nodefaultlibs $WRAPPER_LIBDIR -lc++ -lc++abi $WRAPPER_LIBS"
exec CXX -nostdinc++ -DGCC_HASCLASSVISIBILITY "$WRAPPER_INCLUDEDIR" "$@" $WRAPPER_OPTIONS

13
package/libs/libcxx/patches/010-ssp.patch
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@ -1,13 +0,0 @@
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -760,6 +760,10 @@ function(cxx_link_system_libraries targe
target_link_libraries(${target} PRIVATE atomic)
endif()
+ if (LIBCXX_HAS_MUSL_LIBC)
+ target_link_libraries(${target} PRIVATE ssp_nonshared)
+ endif()
+
if (MINGW)
target_link_libraries(${target} PRIVATE "${MINGW_LIBRARIES}")
endif()

71
package/libs/libcxxabi/Makefile
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@ -1,71 +0,0 @@
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=libcxxabi
PKG_VERSION:=10.0.0
PKG_RELEASE:=1
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).src.tar.xz
PKG_SOURCE_URL:=https://github.com/llvm/llvm-project/releases/download/llvmorg-$(PKG_VERSION)
PKG_HASH:=e71bac75a88c9dde455ad3f2a2b449bf745eafd41d2d8432253b2964e0ca14e1
PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION).src
PKG_MAINTAINER:=Rosen Penev <rosenp@gmail.com>
PKG_LICENSE:=MIT
PKG_LICENSE_FILES:=LICENSE.txt
PKG_BUILD_PARALLEL:=1
CMAKE_BINARY_SUBDIR:=build
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/cmake.mk
define Package/libcxxabi
SECTION:=libs
CATEGORY:=Libraries
TITLE:=LLVM lib++abi
URL:=https://libcxxabi.llvm.org/
DEPENDS:=+libpthread
BUILDONLY:=1
endef
define Package/libcxxabi/description
libc++abi is a new implementation of low level support for a standard C++ library.
endef
CMAKE_OPTIONS += \
-DLIBCXXABI_ENABLE_EXCEPTIONS=ON \
-DLIBCXXABI_ENABLE_PEDANTIC=OFF \
-DLIBCXXABI_ENABLE_PIC=ON \
-DLIBCXXABI_ENABLE_WERROR=OFF \
-DLIBCXXABI_USE_LLVM_UNWINDER=OFF \
-DLIBCXXABI_USE_COMPILER_RT=OFF \
-DLIBCXXABI_ENABLE_THREADS=ON \
-DLIBCXXABI_HAS_PTHREAD_API=ON \
-DLIBCXXABI_INCLUDE_TESTS=OFF \
-DLIBCXXABI_LIBDIR_SUFFIX="" \
-DLIBCXXABI_INSTALL_LIBRARY=ON \
-DLIBCXXABI_ENABLE_SHARED=OFF \
-DLIBCXXABI_LIBCXX_SRC_DIR=$(BUILD_DIR)/libcxx-$(PKG_VERSION).src \
-DLIBCXXABI_LIBCXX_INCLUDES=$(BUILD_DIR)/libcxx-$(PKG_VERSION).src/include
TARGET_CXXFLAGS += -flto
TARGET_LDFLAGS += -Wl,--gc-sections,--as-needed
define Build/Prepare
$(MAKE) -C $(TOPDIR)/package/libs/libcxx prepare
$(call Build/Prepare/Default)
endef
define Build/InstallDev
$(call Build/InstallDev/cmake,$(1))
$(INSTALL_DIR) $(1)/usr/include/
$(INSTALL_DATA) $(PKG_BUILD_DIR)/include/*.h $(1)/usr/include/
endef
$(eval $(call BuildPackage,libcxxabi))

27
package/libs/libcxxabi/patches/010-arm.patch
View File

@ -1,27 +0,0 @@
--- a/src/cxa_exception.h
+++ b/src/cxa_exception.h
@@ -27,6 +27,13 @@ _LIBCXXABI_HIDDEN uint64_t __getExceptio
_LIBCXXABI_HIDDEN void __setExceptionClass ( _Unwind_Exception*, uint64_t);
_LIBCXXABI_HIDDEN bool __isOurExceptionClass(const _Unwind_Exception*);
+#if defined(__arm__) && defined(__GNUC__)
+// missing values from _Unwind_Reason_Code enum
+#define _URC_FATAL_PHASE2_ERROR ((_Unwind_Reason_Code)2)
+#define _URC_FATAL_PHASE1_ERROR ((_Unwind_Reason_Code)3)
+#define _URC_NORMAL_STOP ((_Unwind_Reason_Code)4)
+#endif
+
struct _LIBCXXABI_HIDDEN __cxa_exception {
#if defined(__LP64__) || defined(_WIN64) || defined(_LIBCXXABI_ARM_EHABI)
// Now _Unwind_Exception is marked with __attribute__((aligned)),
--- a/src/cxa_personality.cpp
+++ b/src/cxa_personality.cpp
@@ -1108,7 +1108,7 @@ __gxx_personality_v0(_Unwind_State state
// Check the undocumented force unwinding behavior
bool is_force_unwinding = state & _US_FORCE_UNWIND;
- state &= ~_US_FORCE_UNWIND;
+ state = (_Unwind_State)(state & ~_US_FORCE_UNWIND);
scan_results results;
switch (state) {