C[omp]ute

From: andrew cooke <andrew@...>

Date: Tue, 28 Apr 2015 11:20:26 -0300

LIBXML2_DIR="/usr/include/libxml2"
AC_ARG_WITH(
  [libxml2],
  AS_HELP_STRING(
    [--with-libxml2@<:@=DIR@:>@],
    [libxml2 header location @<:@default DIR=/usr/include/libxml2@:>@]),
  [LIBXML2_DIR="{withval}"],
  [])
AC_CHECK_HEADER(
  ${LIBXML2_DIR}/libxml/xmlexports.h,
  [echo "Found xmlexports.h includes in ${LIBXML2_DIR}/libxml/, good"],
  [echo "================================================="
   echo "libxml2 library not found; Install libxml2: yum install libxml2"
   exit -1])
EXTRA_CPPFLAGS="-I ${LIBXML2_DIR}"

...

AC_SUBST(CPPFLAGS, "$CPPFLAGS $EXTRA_CPPFLAGS")


It's not perfect, because "with" is listed under optional packages, and the
idea isn't that it's optional, but that the location could have changed.  Bu
it seems to work.

Andrew