From 856ea2bad3b3eac565215c0ac79f37a4ba4cd5b7 Mon Sep 17 00:00:00 2001 From: Rosen Penev Date: Fri, 13 Dec 2019 21:07:04 -0800 Subject: 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 --- package/libs/libcxx/files/g++-libcxx | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100755 package/libs/libcxx/files/g++-libcxx (limited to 'package/libs/libcxx/files/g++-libcxx') diff --git a/package/libs/libcxx/files/g++-libcxx b/package/libs/libcxx/files/g++-libcxx new file mode 100755 index 0000000000..81ca46eb0e --- /dev/null +++ b/package/libs/libcxx/files/g++-libcxx @@ -0,0 +1,19 @@ +#!/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++ -lsupc++ $WRAPPER_LIBS" + +exec CXX -fno-builtin -nostdinc++ -DGCC_HASCLASSVISIBILITY "$WRAPPER_INCLUDEDIR" "$@" $WRAPPER_OPTIONS + -- cgit v1.2.3