newlib-cygwin/newlib/libc/sys/linux/configure.in

dnl This is the newlib/libc/sys/linux configure.in file.
dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.5)
AC_INIT(linux.c)

dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake. 
AC_CONFIG_AUX_DIR(../../../..)

NEWLIB_CONFIGURE(../../..)

dnl We have to enable libtool after NEWLIB_CONFIGURE because if we try and
dnl add it into NEWLIB_CONFIGURE, executable tests are made before the first
dnl line of the macro which fail because appropriate LDFLAGS are not set.

if test "${use_libtool}" = "yes"; then
AC_LIBTOOL_WIN32_DLL
AM_PROG_LIBTOOL
AC_PROG_AWK
fi

LINUX_MACH_LIB=
if test -n "${machine_dir}"; then
  if test "${use_libtool}" = "yes"; then
    LINUX_MACH_LIB=machine/${machine_dir}/liblinux${machine_dir}.${aext}
  else
    LINUX_MACH_LIB=machine/lib.${aext}
  fi
fi
AC_SUBST(LINUX_MACH_LIB)

AC_CONFIG_SUBDIRS(machine)

AC_OUTPUT(Makefile)