[PATCH] configure.ac: honor --with-gcc-major-version in gcc-driver-name.h (PR jit/85384)

[Jakub Jelinek]

On Thu, Apr 12, 2018 at 04:51:21PM -0400, David Malcolm wrote:
> Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
> 
> OK for trunk?
> 
> config/ChangeLog:
> 	PR jit/85384
> 	* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.
> 
> gcc/ChangeLog:
> 	PR jit/85384
> 	* configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
> 	by using gcc_base_ver to generate a gcc_driver_version, and use
> 	it when generating GCC_DRIVER_NAME.
> 	* configure.ac: Regenerate.

I'd prefer not touching acx.m4 and instead just:
gcc_driver_version=$gcc_BASEVER
if test x$with_gcc_major_version_only = xyes ; then
  gcc_driver_version=`echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
fi
in configure.ac; after all, it is something what is done elsewhere in
configure.ac:
#define GCCPLUGIN_VERSION_MAJOR   `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
#define GCCPLUGIN_VERSION_MINOR   `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
#define GCCPLUGIN_VERSION_PATCHLEVEL   `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
and the $ is used in all similar sed patterns.

> --- a/gcc/configure.ac
> +++ b/gcc/configure.ac
> @@ -6499,8 +6499,10 @@ AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
>  
>  # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
>  # of jit/jit-playback.c.
> +gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
> +echo "gcc_driver_version: ${gcc_driver_version}"
>  cat > gcc-driver-name.h <<EOF
> -#define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
> +#define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
>  EOF
>  
>  # Check whether --enable-default-pie was given.

	Jakub