2007/11/1, Jack Lloyd <lloyd@xxxxxxxxxxxxx> wrote: > > The .gch files are precompiled headers for C++ which speeds up > processing of the often large templates used in the STL. > > Please send questions about gcc to gcc-help@xxxxxxxxxxx, this > list is only for discussion of the development of GCC. > > Regards, > Jack > > On Thu, Nov 01, 2007 at 10:19:59PM +0100, J.C. Pizarro wrote: > > $ du -s /opt/gcc4*/include/c++/4.*/i686-pc-linux-gnu/bits/ > > 33793 /opt/gcc41320071029/include/c++/4.1.3/i686-pc-linux-gnu/bits/ > > 64743 /opt/gcc42320071031/include/c++/4.2.3/i686-pc-linux-gnu/bits/ > > 181 /opt/gcc43020071026/include/c++/4.3.0/i686-pc-linux-gnu/bits/ > > > > In /opt/gcc4*/include/c++/4.*/i686-pc-linux-gnu/bits/ there are > > * 33.65 MB of stdc++.h.gch/ from gcc-4.1-20071029 > > * 32.38 MB of stdc++.h.gch/ from gcc-4.2-20071031 > > * 32.20 MB of stdtr1c++.h.gch/ from gcc-4.2-20071031 > > * 0 MB of no such dir. stdc++.h.gch/ from gcc-4.3-20071026 > > > > O0g.gch and O2g.gch from these dirs eat many MBs of disk space. Why? > > > > What is there inside of fat .gch file? What means the .gch file? > > > > J.C. Pizarro Thanks, But why gcc-4.3 has not precompiled header for C++ and gcc-4.2 has two redundant precompiled headers for C++? Why not these precompiled headers for C++ in /var/cache/ instead of local dirs?
