> [root@localhost etc]# cat ld.so.conf.d/*.conf > /usr/lib/mysql > /opt/meego/lib > /usr/lib/qt-3.3/lib > /usr/lib/xulrunner-1.9.2 Mine is: mahmood@pc:/etc$ cat ld.so.conf.d/*.conf /usr/lib/mesa # Multiarch support /lib/i686-linux-gnu /usr/lib/i686-linux-gnu /usr/lib/alsa-lib # libc default configuration /usr/local/lib The strange thing for me was that with the libc default configuration, and the presence of libmpc.so.2 in /usr/local/lib, it can not find the file. However, by running "export LD_LIBRARY_PATH=/usr/local/lib" that problem is now solved. Thanks, // Naderan *Mahmood; ----- Original Message ---- From: Kai Ruottu <kai.ruottu@xxxxxxxxxxx> To: gcc-help@xxxxxxxxxxx Sent: Thu, March 31, 2011 9:21:57 PM Subject: Re: fatal error: ppl_c.h: No such file or directory 31.3.2011 19:05, Kai Ruottu kirjoitti: > 31.3.2011 17:16, Mahmood Naderan kirjoitti: > >> /opt/gcc4.6build/./gcc/cc1: error while loading shared libraries: >> libmpc.so.2: >> cannot open shared object file: No such file or directory >> >> It complains about libmpc.so.2 however I have this file since I >> installed MPC from source: >> >> root@pc:/opt/gcc4.6build# ls -l /usr/local/lib/libmpc.* >> -rw-r--r-- 1 root root 147256 2011-03-31 12:37 /usr/local/lib/libmpc.a >> -rwxr-xr-x 1 root root 946 2011-03-31 12:37 /usr/local/lib/libmpc.la >> lrwxrwxrwx 1 root root 15 2011-03-31 12:37 /usr/local/lib/libmpc.so -> >> libmpc.so.2.0.0 >> lrwxrwxrwx 1 root root 15 2011-03-31 12:37 /usr/local/lib/libmpc.so.2 -> >> libmpc.so.2.0.0 >> -rwxr-xr-x 1 root root 89558 2011-03-31 12:37 >> /usr/local/lib/libmpc.so.2.0.0 >> >> As you can see in the config.log, I configured the gcc to install in >> /usr. What should I do in order to tell gcc where is libmpc.so.2 ? > > Aren't there any "linux-help" list for questions like this? Let's add some expected logic (common sense) into this issue : - when someone wants to add new shared libraries, new tools etc from sources into the "Linux system", one configures their sources using '--prefix=/usr' - if one doesn't want the "original system" being mixed with one's own local additions, then the default '--prefix=/usr/local' is one good choice. But one must take the local additions in '/usr/local/bin' and '/usr/local/lib' in use via modifying PATH and something else for the shared libraries, like adding a new '.conf' text file into the '/etc/ld.so.conf.d'. For instance my system has : [root@localhost etc]# cat ld.so.conf.d/*.conf /usr/lib/mysql /opt/meego/lib /usr/lib/qt-3.3/lib /usr/lib/xulrunner-1.9.2 Maybe the previous isn't the "official truth", but hopefully it is at least a little near it...
