*** /usr/portage/sys-devel/m4/m4-1.4.15.ebuild	Tue Aug 31 12:50:17 2010
--- m4-1.4.15.ebuild	Wed Sep  8 12:58:40 2010
***************
*** 11,22 ****
  LICENSE="GPL-3"
  SLOT="0"
  KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~sparc-fbsd ~x86-fbsd"
! IUSE="examples"
  
  # remember: cannot dep on autoconf since it needs us
  DEPEND="app-arch/xz-utils"
  RDEPEND=""
  
  src_configure() {
  	# Disable automagic dependency over libsigsegv; see bug #278026
  	export ac_cv_libsigsegv=no
--- 11,28 ----
  LICENSE="GPL-3"
  SLOT="0"
  KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~sparc-fbsd ~x86-fbsd"
! IUSE="examples elibc_uclibc"
  
  # remember: cannot dep on autoconf since it needs us
  DEPEND="app-arch/xz-utils"
  RDEPEND=""
  
+ src_prepare() {
+ 	if use elibc_uclibc ; then
+ 		sed -i '34 s/.*/\#if \!defined __GLIBC__ \|\| defined __UCLIBC__/' ${S}/lib/spawn.in.h || die "failed to patch spawn.in.h"
+ 	fi
+ }
+ 
  src_configure() {
  	# Disable automagic dependency over libsigsegv; see bug #278026
  	export ac_cv_libsigsegv=no