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856ea2bad3
Currently in OpenWrt, there are two libc++: libstdcpp and uClibc++. The former is huge and the latter supports only C++98 with some basic support for C++11. Those C++ versions seem to be specific to the compiler version libcxx supports C++11 and above while being much smaller than libstdcpp. On mt7621, these are the sizes of the ipks that I get: libstdcpp: 460786 libcxx: 182881 uClibc++:67720 libcxx is faster than uClibc++ and is under active development as part of the LLVM project while uClibc++ is effectively dead. This PR modifies uclibc++.mk to expose the make menuconfig option. Further cleanup is beyond the scope of this PR. What that means is, this is not used by default. A g++-libcxx wrapper based on the uClibc++ one was added. Works the same way. Compile tested with all packages that use uclibc++.mk in their Makefiles under mipsel_24kc. kismet fails compilation but that package needs to be cleaned up and updated. Runtime tested with gddrescue, gdisk, dcwapd, bonnie++, and aircrack-ng on a TP-Link Archer C7v2. Signed-off-by: Rosen Penev <rosenp@gmail.com>
63 lines
1.5 KiB
Makefile
63 lines
1.5 KiB
Makefile
#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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PKG_NAME:=libcxx
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PKG_VERSION:=9.0.1
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PKG_RELEASE:=1
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PKG_SOURCE_PROTO:=git
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PKG_SOURCE_URL:=https://git.llvm.org/git/libcxx
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PKG_SOURCE_VERSION:=2076f539f410805ef88692b9c0ce0a0b882a7680
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PKG_MIRROR_HASH:=6dff036660d478bfaa14e407fc5de26d22da1087118c897b1a3ad2e90cb7bf39
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PKG_MAINTAINER:=Rosen Penev <rosenp@gmail.com>
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PKG_LICENSE:=MIT
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PKG_LICENSE_FILES:=LICENSE.txt
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PKG_BUILD_PARALLEL:=1
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CMAKE_BINARY_SUBDIR:=build
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include $(INCLUDE_DIR)/package.mk
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include $(INCLUDE_DIR)/cmake.mk
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define Package/libcxx
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SECTION:=libs
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CATEGORY:=Libraries
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TITLE:=LLVM libstdc++
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URL:=https://libcxx.llvm.org/
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DEPENDS:=+libatomic +libpthread
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endef
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define Package/libcxx/description
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LLVM C++ library targeting C++11 and above
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endef
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CMAKE_OPTIONS += \
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-DLIBCXX_ENABLE_ASSERTIONS=OFF \
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-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
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-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
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-DLIBCXX_INCLUDE_DOCS=OFF \
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-DLIBCXX_INCLUDE_TESTS=OFF \
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-DLIBCXX_HAS_MUSL_LIBC=ON \
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-DLIBCXX_STANDALONE_BUILD=ON
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TARGET_CXXFLAGS += -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -Wno-attributes -flto
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TARGET_LDFLAGS += -Wl,--as-needed
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define Build/InstallDev
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$(call Build/InstallDev/cmake,$(1))
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$(CP) files/g++-libcxx $(TOOLCHAIN_DIR)/bin/
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$(SED) 's,CXX,$(TARGET_CXX),g' $(TOOLCHAIN_DIR)/bin/g++-libcxx
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endef
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define Package/libcxx/install
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$(INSTALL_DIR) $(1)/usr/lib
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$(CP) $(PKG_INSTALL_DIR)/usr/lib/libc++.so.* $(1)/usr/lib/
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endef
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$(eval $(call BuildPackage,libcxx))
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