When I compile C/C++ program with popen in php... I got this error:
g++: error trying to exec 'cc1plus': execvp: No such file or directory
but if I run php code in shell.. it works fine..
in Arch Linux..
PHP Code:
<?php
function rfile($fp) {
$out="";
while (!feof($fp)) {
$out.= fgets($fp, 1024000);
}
return $out;
}
$p = popen('g++ -Wall -g aplusb.cc -o aplusb 2>&1', 'r');
$result = rfile($p);
pclose($p);
echo $result;
?>
thanks
You may have this issue as well if you have environment variable GCC_ROOT pointing to a wrong location. Probably simplest fix could be (on *nix like system):
unset GCC_ROOT
in more complicated cases you may need to repoint it to proper location
I had the same issue when forking with 'python'; the main reason is that the search path is relative, if you don't call g++ as /usr/bin/g++, it will not be able to work out the canonical paths to call cc1plus.
I don't know why but i just renamed my source file COLARR.C to colarr.c and the error vanished! probably you need this
sudo apt-get install g++
Something went wrong with your GCC installation. Try reinstalling the it like this:
sudo apt-get install --reinstall g++-5
In Ubuntu the g++ is a dependency package that installs the default version of g++ for your OS version. So simply removing and installing the package again won't work, cause it will install the default version. That's why you need to reinstall.
Note: You can replace the g++-5 with your desired g++ version. To find your current g++ version run this:
g++ --version
Install g++ on openSuSE run
zypper in gcc-c++
This problem can happen if different versions of g++ and gcc are installed.
g++ --version
gcc --version
If these don't give the result, you probably have multiple versions of gcc installed. You can check by using:
dpkg -l | grep gcc | awk '{print $2}'
Usually, /usr/bin/gcc will be sym-linked to /etc/alternatives/gcc which is again sym-linked to say /usr/bin/gcc-4.6 or /usr/bin/gcc-4.8 (In case you have gcc-4.6, gcc-4.8 installed.)
By changing this link you can make gcc and g++ run in the same version and this may resolve your issue!
I had the same issue with gcc "gnat1" and it was due to the path being wrong. Gnat1 was on version 4.6 but I was executing version 4.8.1, which I had installed. As a temporary solution, I copied gnat1 from 4.6 and pasted under the 4.8.1 folder.
The path to gcc on my computer is /usr/lib/gcc/i686-linux-gnu/
You can find the path by using the find command:
find /usr -name "gnat1"
In your case you would look for cc1plus:
find /usr -name "cc1plus"
Of course, this is a quick solution and a more solid answer would be fixing the broken path.
Each compiler has its own libexec/ directory. Normally libexec directory contains small helper programs called by other programs. In this case, gcc is looking for its own 'cc1' compiler. Your machine may contains different versions of gcc, and each version should have its own 'cc1'. Normally these compilers are located on:
/usr/local/libexec/gcc/<architecture>/<compiler>/<compiler_version>/cc1
Similar path for g++. Above error means, that the current gcc version used is not able to find its own 'cc1' compiler. This normally points to a PATH issue.
Source: Stackoverflow.com