dnl
dnl SZDG_DCAPI
dnl
dnl Check for the Distributed Computing Platform development files
dnl

AC_DEFUN([_SZDG_DCAPI_COMMON], [
	AC_ARG_WITH([dcapi_flavor], AS_HELP_STRING([--with-dcapi-flavor],
		[DCAPI flavor to use @<:@boinc@:>@]),,
		[with_dcapi_flavor=boinc])
	PKG_PROG_PKG_CONFIG([0.17])
])

AC_DEFUN([SZDG_DCAPI_CLIENT], [
	AC_REQUIRE([_SZDG_DCAPI_COMMON])

	PKG_CHECK_MODULES([DCAPI_CLIENT], [dcapi-${with_dcapi_flavor}-client],,
		[AC_MSG_ERROR([DC-API client implementation not found])])
	
	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS $DCAPI_CLIENT_CFLAGS"
	save_LIBS="$LIBS"
	LIBS="$LIBS $DCAPI_CLIENT_LIBS"
	AC_CHECK_HEADERS([dc_client.h], [],
		[AC_MSG_ERROR([DC-API client headers are missing or unusable])])
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <dc_client.h>]],
		[[(void)DC_initClient()]])],
		[true],
		[AC_MSG_ERROR([DC-API client libraries are missing or unusable])])
	CPPFLAGS="$save_CPPFLAGS"
	LIBS="$save_LIBS"
])

AC_DEFUN([SZDG_DCAPI_MASTER], [
	AC_REQUIRE([_SZDG_DCAPI_COMMON])

	PKG_CHECK_MODULES([DCAPI_MASTER], [dcapi-${with_dcapi_flavor}-master],,
		[AC_MSG_ERROR([DC-API master implementation not found])])

	dnl Minimal check to see if the headers are usable
	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS $DCAPI_MASTER_CFLAGS"
	save_LIBS="$LIBS"
	LIBS="$LIBS $DCAPI_MASTER_LIBS"
	AC_CHECK_HEADERS([dc.h], [],
		[AC_MSG_ERROR([DC-API master headers are missing or unusable])])
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <dc.h>]],
		[[(void)DC_initMaster((char *)0)]])],
		[true],
		[AC_MSG_ERROR([DC-API master libraries are missing or unusable])])
	CPPFLAGS="$save_CPPFLAGS"
	LIBS="$save_LIBS"
])