Hi! On Wed, 7 Jan 2015 17:00:59 +0100, Tristan Gingold <ging...@adacore.com> wrote: > > > On 07 Jan 2015, at 15:45, Joel Brobecker <brobec...@adacore.com> wrote: > > This patch enhances config/zlib.m4 to introduce an extra option > > --with-libz-prefix which allows us to provide the location of > > the zlib library we want to use during the build. > > I prefer the gcc way to provide external library: > > --with-zlib -> system zlib used > --with-zlib=pathname -> zlib from pathname is used > > I have never needed different include and lib paths, but > this is supported by gcc. > > (Furthermore, I think that --with-zlib vs --with-libz-prefix is confusing).
I'm not a GCC build machinery maintainer, but I do second Tristan's suggestion to stay compatible with the existing --with-[...] options that GCC already supports: > Cf: > > --with-gmp=pathname > --with-gmp-include=pathname > --with-gmp-lib=pathname > --with-mpfr=pathname > --with-mpfr-include=pathname > --with-mpfr-lib=pathname > --with-mpc=pathname > --with-mpc-include=pathname > --with-mpc-lib=pathname > If you want to build GCC but do not have the GMP library, the MPFR library > and/or the MPC library installed in a standard location and do not have their > sources present in the GCC source tree then you can explicitly specify the > directory where they are installed (‘--with-gmp=gmpinstalldir’, > ‘--with-mpfr=mpfrinstalldir’, ‘--with-mpc=mpcinstalldir’). The > --with-gmp=gmpinstalldir option is shorthand for > --with-gmp-lib=gmpinstalldir/lib and > --with-gmp-include=gmpinstalldir/include. Likewise the > --with-mpfr=mpfrinstalldir option is shorthand for > --with-mpfr-lib=mpfrinstalldir/lib and > --with-mpfr-include=mpfrinstalldir/include, also the --with-mpc=mpcinstalldir > option is shorthand for --with-mpc-lib=mpcinstalldir/lib and > --with-mpc-include=mpcinstalldir/include. If these shorthand assumptions are > not correct, you can use the explicit include and lib options directly. You > might also need to ensure the shared libraries can be found by the dynamic > linker when building and using GCC, for example by setting the runtime shared > library path variable (LD_LIBRARY_PATH on GNU/Linux and Solaris systems). > These flags are applicable to the host platform only. When building a cross > compiler, they will not be used to configure target libraries. Grüße, Thomas
signature.asc
Description: PGP signature
