Hi,
looks like the autoconf-archive is too old. I guess the best way to go
is to add the macro as a local macro into the m4 directory. I will do that.
Tommi
Am 27.10.2014 um 12:35 schrieb Leandro Santiago:
That's weird, because in my Ubuntu 12.04 I do have that package
installed. It's named autoconf-archive, but does not contain any macro
AX_CXX_COMPILE_STDCXX_11. The closest I have here is
AC_CXX_COMPILE_STDCXX_0X in file ax_cxx_compile_stdcxx_0x.m4. Perhaps
it's a bit outdated...
On 23 October 2014 14:34, Tommi Mäkitalo <[email protected]
<mailto:[email protected]>> wrote:
Hi,
right. I should have mentioned it. I added that macro to cxxtools,
tntnet and tntdb so that C++11 is used if available. They do not
yet use any features but using C++11 mode helps the compiler
optimizing the code. I benchmarked it and it really makes the code
faster. It do not affect compatibility to C++03 though.
The marco can be found in the autoconf-archive. You should install
that package on ubuntu. At least under fedora the package is named
exactly so.
Tommi
Am 23.10.2014 um 17:46 schrieb Leandro Santiago:
After pulling code from master branch, I have an error on
configure script. I am using Ubuntu 12.02 with gcc 4.8.1. If I
comment AX_CXX_COMPILE_STDCXX_11 on configure.ac
<http://configure.ac> and regenerate configure, everything works
fine.
...
checking if arm-linux-gnueabihf-g++ supports -c -o file.o... yes
checking if arm-linux-gnueabihf-g++ supports -c -o file.o...
(cached) yes
checking whether the arm-linux-gnueabihf-g++ linker
(/usr/arm-linux-gnueabihf/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
./configure: line 16222: syntax error near unexpected token `noext,'
./configure: line 16222: `AX_CXX_COMPILE_STDCXX_11(noext, optional)'
make: *** [config.status] Error 2
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