my $prefix_abs = abs_path($prefix);
my $srcdir_abs = abs_path($srcdir);
+my $builddir_abs = abs_path($builddir);
die("using an empty absolute prefix isn't allowed") unless $prefix_abs ne "";
die("using '/' as absolute prefix isn't allowed") unless $prefix_abs ne "/";
$ENV{PREFIX_ABS} = $prefix_abs;
$ENV{SRCDIR} = $srcdir;
$ENV{SRCDIR_ABS} = $srcdir_abs;
+$ENV{BUILDDIR} = $builddir;
+$ENV{BUILDDIR_ABS} = $builddir_abs;
+$ENV{EXEEXT} = $exeext;
if (defined($ENV{RUN_FROM_BUILD_FARM}) and
($ENV{RUN_FROM_BUILD_FARM} eq "yes")) {