Simple cross build fails out of the box on Fedora

[Maciej W. Rozycki]

On Thu, 12 Mar 2026, Rot127 wrote:

> But --with-build-sysroot should probably be removed. Since it obviously
> doesn't do what it promises.

 The top-level `configure' script is shared with the GCC project.  Here's 
what GCC installation documentations says about `--with-build-sysroot':

'--with-build-sysroot'
'--with-build-sysroot=DIR'
     Tells GCC to consider DIR as the system root (see '--with-sysroot')
     while building target libraries, instead of the directory specified
     with '--with-sysroot'.  This option is only useful when you are
     already using '--with-sysroot'.  You can use '--with-build-sysroot'
     when you are configuring with '--prefix' set to a directory that is
     different from the one in which you are installing GCC and your
     target libraries.

     This option affects the system root for the compiler used to build
     target libraries (which runs on the build system); it does not
     affect the compiler which is used to build GCC itself.

     If you specify the '--with-native-system-header-dir=DIRNAME' option
     then the compiler will search that directory within DIRNAME for
     native system headers rather than the default '/usr/include'.

Since no target libraries are built in the course of building binutils, 
this option is irrelevant.  You might consider passing `--sysroot=...' 
directly to your cross-compiler via $CC in `configure' invocation if it 
hasn't been configured to use the intended directory automatically.

  Maciej