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dnl __BEGIN_LICENSE__
dnl Copyright (c) 2009-2012, United States Government as represented by the
dnl Administrator of the National Aeronautics and Space Administration. All
dnl rights reserved.
dnl
dnl The NGT platform is licensed under the Apache License, Version 2.0 (the
dnl "License"); you may not use this file except in compliance with the
dnl License. You may obtain a copy of the License at
dnl http://www.apache.org/licenses/LICENSE-2.0
dnl
dnl Unless required by applicable law or agreed to in writing, software
dnl distributed under the License is distributed on an "AS IS" BASIS,
dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dnl See the License for the specific language governing permissions and
dnl limitations under the License.
dnl __END_LICENSE__
m4_ifdef([_AX_FIXUPS], [], [m4_include([m4/fixups.m4])])
dnl Usage: AX_PKG(<name>, <dependencies>, <libraries>, <headers>[, <relative include path>, <relative lib path>, <required-functions>, <optional-deps>])
AC_DEFUN([AX_PKG],
[
m4_divert_once([INIT_PREPARE], [dnl
AC_ARG_WITH(my_tolower([$1]),
AS_HELP_STRING([--with-]my_tolower([$1]), [look for the $1 package]),
[ HAVE_PKG_$1=$withval ]
)])
ADD_$1_CPPFLAGS="$PKG_$1_CPPFLAGS"
PKG_$1_CPPFLAGS=""
ADD_$1_LDFLAGS="$PKG_$1_LDFLAGS"
PKG_$1_LDFLAGS=""
if test -z "$ADD_$1_CPPFLAGS"; then :; else
AX_LOG([APPEND: ADD_]$1[_CPPFLAGS=$ADD_]$1[_CPPFLAGS])
fi
if test -z "$ADD_$1_LDFLAGS"; then :; else
AX_LOG([APPEND: ADD_]$1[_LDFLAGS=$ADD_]$1[_LDFLAGS])
fi
m4_ifval([$7],
[AC_MSG_CHECKING([for package $1 with functions ($7)])],
[AC_MSG_CHECKING([for package $1])])
AC_LANG_ASSERT(C++)
# We can skip searching if we're already at "no"
if test "no" = "$HAVE_PKG_$1"; then
AC_MSG_RESULT([no (disabled by user)])
elif test x"${HAVE_PKG_$1#no:}" != "x$HAVE_PKG_$1"; then # read as: if has_prefix(HAVE_PKG_$1, "no:")
dnl { and } break AC_MSG_RESULT
reason="${HAVE_PKG_$1#no:}"
AC_MSG_RESULT([no ($reason)])
HAVE_PKG_$1=no
else
if test -z "${PKG_$1_LIBS}"; then
PKG_$1_LIBS="$3"
else
AX_LOG([OVERRIDE: ]$1[ libs (]$3[) with $PKG_]$1[_LIBS])
fi
if test ! -z "${PKG_$1_MORE_LIBS}"; then
AX_LOG([APPEND: ]$1[ libs ($PKG_]$1[_LIBS) with $PKG_]$1[_MORE_LIBS])
PKG_$1_LIBS="$PKG_$1_LIBS $PKG_$1_MORE_LIBS"
fi
AS_VAR_PUSHDEF([missing], [ax_pkg_]$1[_missing])
AX_LOAD_DEPS([$1], [$2], [missing])
AS_IF([test -n "$missing"], [AC_MSG_RESULT([no ([missing] $missing)]); HAVE_PKG_$1=no])
AS_VAR_POPDEF([missing])
dnl load some optional deps
AX_LOAD_DEPS([$1], [$8])
if test "x$HAVE_PKG_$1" = "xno" ; then
# printed the result already
:
# We skip the search if the user has been explicit about "yes"
elif test "x$HAVE_PKG_$1" = "xyes" ; then
AC_MSG_RESULT([yes (using user-supplied flags)])
# Otherwise we look for a path that contains the needed headers and libraries
else
if test -n "${HAVE_PKG_$1}" && test "${HAVE_PKG_$1}" != "yes" && test "${HAVE_PKG_$1}" != "no"; then
PKG_PATHS_$1="${HAVE_PKG_$1}"
else
PKG_PATHS_$1="default ${PKG_PATHS}"
fi
HAVE_PKG_$1=no
ax_pkg_old_libs="$LIBS"
ax_pkg_old_cppflags="$CPPFLAGS"
ax_pkg_old_ldflags="$LDFLAGS"
LIBS="$PKG_$1_LIBS $LIBS"
for path in $PKG_PATHS_$1; do
AX_LOG([SEARCH: Checking $path for $PKG_]$1[_LIBS])
CPPFLAGS="$PKG_$1_CPPFLAGS $ax_pkg_old_cppflags"
LDFLAGS="$ax_pkg_old_ldflags"
echo > conftest.h
for header in $4 ; do
echo "#include <$header>" >> conftest.h
done
TRY_ADD_CPPFLAGS="$ADD_$1_CPPFLAGS"
TRY_ADD_LDFLAGS="$ADD_$1_LDFLAGS"
if test "$path" != "default"; then
# ISIS is really stupid, and they use /foo/inc as their include file
# location instead of /foo/include. So we check for that. This sees
# about any other idiot libraries that use the same design as well.
AX_INCLUDE_DIR=include
if ! test -d $path/${AX_INCLUDE_DIR}; then
if test -d $path/inc; then
AX_INCLUDE_DIR=inc
fi
fi
m4_ifval([$5],
[TRY_ADD_CPPFLAGS="$TRY_ADD_CPPFLAGS -I$path/${AX_INCLUDE_DIR}/]$5["],
[TRY_ADD_CPPFLAGS="$TRY_ADD_CPPFLAGS -I$path/${AX_INCLUDE_DIR}"])
if test -d $path/${AX_LIBDIR}; then
m4_ifval([$6],
[TRY_ADD_LDFLAGS="$TRY_ADD_LDFLAGS -L$path/${AX_LIBDIR}/]$6["],
[TRY_ADD_LDFLAGS="$TRY_ADD_LDFLAGS -L$path/${AX_LIBDIR}"])
elif test x"${AX_OTHER_LIBDIR}" != "x"; then
m4_ifval([$6],
[TRY_ADD_LDFLAGS="$TRY_ADD_LDFLAGS -L$path/${AX_OTHER_LIBDIR}/]$6["],
[TRY_ADD_LDFLAGS="$TRY_ADD_LDFLAGS -L$path/${AX_OTHER_LIBDIR}"])
fi
fi
CPPFLAGS="$CPPFLAGS $TRY_ADD_CPPFLAGS"
LDFLAGS="$LDFLAGS $TRY_ADD_LDFLAGS"
dnl check for the headers and libs. if found, keep going.
dnl otherwise, check next path
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include "conftest.h"],[])],
[ HAVE_PKG_$1=yes ], [continue] )
m4_ifval([$7],
AX_CHECK_FUNCTIONS([$7], [$LDFLAGS $LIBS], [], [ HAVE_PKG_$1=no; echo "package $1 did not have function $func" >&AS_MESSAGE_LOG_FD ])
)
if test x"$HAVE_PKG_$1" = x"yes"; then
AC_MSG_RESULT([yes])
break
fi
TRY_ADD_CPPFLAGS=""
TRY_ADD_LDFLAGS=""
done
if test "x$HAVE_PKG_$1" = "xyes" ; then
# Append to CPPFLAGS, since that's the order we detected in
PKG_$1_CPPFLAGS="$PKG_$1_CPPFLAGS $TRY_ADD_CPPFLAGS"
# Prepend to LIBS, because dependencies need to be listed after all users
PKG_$1_LIBS="$TRY_ADD_LDFLAGS $PKG_$1_LIBS"
# But append the LDFLAGS here, so we don't break detection order
OTHER_CPPFLAGS="$OTHER_CPPFLAGS $TRY_ADD_CPPFLAGS"
OTHER_LDFLAGS="$OTHER_LDFLAGS $TRY_ADD_LDFLAGS"
else
AC_MSG_RESULT([no (not found)])
fi
CPPFLAGS="$ax_pkg_old_cppflags"
LDFLAGS="$ax_pkg_old_ldflags"
LIBS="$ax_pkg_old_libs"
fi
fi
if test "${HAVE_PKG_$1}" = "yes" ; then
ax_have_pkg_bool=1
else
ax_have_pkg_bool=0
PKG_$1_CPPFLAGS=
PKG_$1_LIBS=
fi
AC_DEFINE_UNQUOTED([HAVE_PKG_$1],
[$ax_have_pkg_bool],
[Define to 1 if the $1 package is available.])
AC_SUBST(PKG_$1_CPPFLAGS)
AC_SUBST(PKG_$1_LIBS)
AC_SUBST(HAVE_PKG_$1)
AX_LOG([HAVE_PKG_]$1[ = ${HAVE_PKG_]$1[}])
AX_LOG([PKG_]$1[_CPPFLAGS= $PKG_]$1[_CPPFLAGS])
AX_LOG([PKG_]$1[_LIBS= $PKG_]$1[_LIBS])
AX_LOG([CPPFLAGS= $CPPFLAGS])
AX_LOG([LDFLAGS= $LDFLAGS])
AX_LOG([OTHER_CPPFLAGS= $OTHER_CPPFLAGS])
AX_LOG([OTHER_LDFLAGS= $OTHER_LDFLAGS])
])
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