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openwrt/include/uclibc++.mk

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build: add a config option for choosing the prefered standard c++ library and add uclibc++.mk to make this easy to handle in packages SVN-Revision: 32369
2012-06-14 22:26:04 +02:00
ifndef DUMP
ifdef __package_mk
$(error uclibc++.mk must be included before package.mk)
endif
endif
libcxx: Add package Currently in OpenWrt, there are two libc++: libstdcpp and uClibc++. The former is huge and the latter supports only C++98 with some basic support for C++11. Those C++ versions seem to be specific to the compiler version libcxx supports C++11 and above while being much smaller than libstdcpp. On mt7621, these are the sizes of the ipks that I get: libstdcpp: 460786 libcxx: 182881 uClibc++:67720 libcxx is faster than uClibc++ and is under active development as part of the LLVM project while uClibc++ is effectively dead. This PR modifies uclibc++.mk to expose the make menuconfig option. Further cleanup is beyond the scope of this PR. What that means is, this is not used by default. A g++-libcxx wrapper based on the uClibc++ one was added. Works the same way. Compile tested with all packages that use uclibc++.mk in their Makefiles under mipsel_24kc. kismet fails compilation but that package needs to be cleaned up and updated. Runtime tested with gddrescue, gdisk, dcwapd, bonnie++, and aircrack-ng on a TP-Link Archer C7v2. Signed-off-by: Rosen Penev <rosenp@gmail.com>
2019-12-14 06:07:04 +01:00
PKG_PREPARED_DEPENDS += CONFIG_USE_UCLIBCXX CONFIG_USE_LIBCXX
CXX_DEPENDS = +USE_UCLIBCXX:uclibcxx +USE_LIBCXX:libcxx +USE_LIBSTDCXX:libstdcpp
build: add a config option for choosing the prefered standard c++ library and add uclibc++.mk to make this easy to handle in packages SVN-Revision: 32369
2012-06-14 22:26:04 +02:00
ifneq ($(CONFIG_USE_UCLIBCXX),)
uclibc++.mk: override the cc binary instead of the wrapper command when ccache is used SVN-Revision: 32383
2012-06-15 14:57:29 +02:00
ifneq ($(CONFIG_CCACHE),)
fix ccache related build breakage SVN-Revision: 32421
2012-06-18 10:50:26 +02:00
TARGET_CXX_NOCACHE=g++-uc
uclibc++.mk: override the cc binary instead of the wrapper command when ccache is used SVN-Revision: 32383
2012-06-15 14:57:29 +02:00
else
fix ccache related build breakage SVN-Revision: 32421
2012-06-18 10:50:26 +02:00
TARGET_CXX=g++-uc
uclibc++.mk: override the cc binary instead of the wrapper command when ccache is used SVN-Revision: 32383
2012-06-15 14:57:29 +02:00
endif
build: add a config option for choosing the prefered standard c++ library and add uclibc++.mk to make this easy to handle in packages SVN-Revision: 32369
2012-06-14 22:26:04 +02:00
endif
libcxx: Add package Currently in OpenWrt, there are two libc++: libstdcpp and uClibc++. The former is huge and the latter supports only C++98 with some basic support for C++11. Those C++ versions seem to be specific to the compiler version libcxx supports C++11 and above while being much smaller than libstdcpp. On mt7621, these are the sizes of the ipks that I get: libstdcpp: 460786 libcxx: 182881 uClibc++:67720 libcxx is faster than uClibc++ and is under active development as part of the LLVM project while uClibc++ is effectively dead. This PR modifies uclibc++.mk to expose the make menuconfig option. Further cleanup is beyond the scope of this PR. What that means is, this is not used by default. A g++-libcxx wrapper based on the uClibc++ one was added. Works the same way. Compile tested with all packages that use uclibc++.mk in their Makefiles under mipsel_24kc. kismet fails compilation but that package needs to be cleaned up and updated. Runtime tested with gddrescue, gdisk, dcwapd, bonnie++, and aircrack-ng on a TP-Link Archer C7v2. Signed-off-by: Rosen Penev <rosenp@gmail.com>
2019-12-14 06:07:04 +01:00
ifneq ($(CONFIG_USE_LIBCXX),)
ifneq ($(CONFIG_CCACHE),)
TARGET_CXX_NOCACHE=g++-libcxx
else
TARGET_CXX=g++-libcxx
endif
endif
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