The following commands are a recipe bsmedberg uses to compile 32-bit Firefox on an x86-64 Fedora Core 7 system. This is not technically cross-compiling, because the "target" binaries being produced will run on the native system; this means that a lot of the complexities of cross-compiling can be avoided.
The following extra packages must be installed (using <tt>sudo yum install packagename</tt>):
- fontconfig-devel.i386 - Unfortunately, <tt>yum</tt> refuses to install this package at the same time as fontconfig-devel.x86_64 - I had to download the RPM and install it manually using <tt>rpm -i --replacefiles fontconfig-devel-2.4.2-3.fc7.i386.rpm</tt>
The list of additional packages given above requires modifications for Fedora 8:
- xorg-x11-proto-devel.i386 is no more present in Fedora 8. .noarch RPM package is used instead and it was installed automatically at least for me. This RPM package (xorg-x11-proto-devel.noarch) has pkg-config files in a different location (/usr/share/pkgconfig).
- popt-devel.386 - Unfortunately, <tt>yum</tt> refuses to install this package at the same time as popt-devel.x86_64 - I had to download the RPM and install it manually using <tt>rpm -i --replacefiles popt-devel-1.12-3.fc8.i386.rpm</tt>
- dbus-glib-devel.i386 may also need to be installed
To configure by hand in a bash-like shell, use the following command:
PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig CC="gcc -m32" CXX="g++ -m32" ../mozilla/configure --x-libraries=/usr/lib --target=i686-pc-linux --other-options-here
To do the same thing with a mozconfig file:
export PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig CC="gcc -m32" CXX="g++ -m32" ac_add_options --x-libraries=/usr/lib ac_add_options --target=i686-pc-linux
For Fedora 8 it is necessary to add /usr/share/pkgconfig to PKG_CONFIG_LIBDIR: