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openwrt/package/libs/libcxx/Makefile

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libcxx: Add package 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>
2019-12-14 05:07:04 +00:00
#
# 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:=9.0.1
libcxx: Build with the libsupc++ ABI Allows proper exception handling. This includes removing unimplemented warnings. File size increased as a result: Before: 182874 After: 211006 On mipsel_24kc. Note that this requires libsupc++ anyway. It's specified in g++-libcxx. Signed-off-by: Rosen Penev <rosenp@gmail.com>
2020-01-01 03:37:34 +00:00
PKG_RELEASE:=3
libcxx: Add package 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>
2019-12-14 05:07:04 +00:00
PKG_SOURCE_PROTO:=git
PKG_SOURCE_URL:=https://git.llvm.org/git/libcxx
PKG_SOURCE_VERSION:=2076f539f410805ef88692b9c0ce0a0b882a7680
libcxx: Depenency fixes Don't build with uClibc-ng. It's totally unsupported as several functions are missing. Make the musl libc support conditional. Fix hash with make check FIXUP=1. Apparently I based the Makefile off of libedit and forgot to fix the hash. Signed-off-by: Rosen Penev <rosenp@gmail.com> Fixes: 856ea2bad3b3 ("libcxx: Add package")
2019-12-23 01:41:15 +00:00
PKG_MIRROR_HASH:=d527880a18dec9109575c76717cf5288fb91c11381b9d261cae2e5bebcbdab2e
libcxx: Add package 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>
2019-12-14 05:07:04 +00:00
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/libcxx
SECTION:=libs
CATEGORY:=Libraries
TITLE:=LLVM libstdc++
URL:=https://libcxx.llvm.org/
DEPENDS:=+libatomic +libpthread
endef
define Package/libcxx/description
LLVM C++ library targeting C++11 and above
endef
CMAKE_OPTIONS += \
libcxx: Build with the libsupc++ ABI Allows proper exception handling. This includes removing unimplemented warnings. File size increased as a result: Before: 182874 After: 211006 On mipsel_24kc. Note that this requires libsupc++ anyway. It's specified in g++-libcxx. Signed-off-by: Rosen Penev <rosenp@gmail.com>
2020-01-01 03:37:34 +00:00
-DLIBCXX_CXX_ABI="libsupc++" \
libcxx: Add package 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>
2019-12-14 05:07:04 +00:00
-DLIBCXX_ENABLE_ASSERTIONS=OFF \
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
-DLIBCXX_INCLUDE_DOCS=OFF \
-DLIBCXX_INCLUDE_TESTS=OFF \
libcxx: Depenency fixes Don't build with uClibc-ng. It's totally unsupported as several functions are missing. Make the musl libc support conditional. Fix hash with make check FIXUP=1. Apparently I based the Makefile off of libedit and forgot to fix the hash. Signed-off-by: Rosen Penev <rosenp@gmail.com> Fixes: 856ea2bad3b3 ("libcxx: Add package")
2019-12-23 01:41:15 +00:00
-DLIBCXX_STANDALONE_BUILD=ON \
-DLIBCXX_HAS_MUSL_LIBC=$(if $(CONFIG_USE_MUSL),ON,OFF)
libcxx: Add package 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>
2019-12-14 05:07:04 +00:00
TARGET_CXXFLAGS += -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -Wno-attributes -flto
libcxx: Add size optimizations Changed standard to 2a. 2a (as well as 17) contain more constexpr functions, which are evaluated at compile time. This saves space. Added --gc-sections. With the CXXABI change, this now makes the package smaller. With these, size went down to 210845 on mipsel_24kc. Also fixed two small compiler warnings. No real change in behavior. Signed-off-by: Rosen Penev <rosenp@gmail.com>
2020-01-01 03:37:35 +00:00
TARGET_LDFLAGS += -Wl,--gc-sections,--as-needed -flto=jobserver
libcxx: Add package 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>
2019-12-14 05:07:04 +00:00
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))
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