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>
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>
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: 856ea2bad3 ("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>
Rosen Penev