-dnl FIXME: Replace `main' with a function in `-lnsl':
-AC_CHECK_LIB([nsl], [main])
-
-AC_CHECK_LIB([pcre], [main])
-
-# CURL
-LIBCURL_CHECK_CONFIG([yes], [], [have_libcurl="yes"], [have_libcurl="no"])
-if test "${have_libcurl}" != yes; then
- AC_MSG_ERROR([libcurl library not found, please install it])
-else
- CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
- LIBS="${LIBS} ${LIBCURL}"
-fi
-
-# libxml2
-AM_PATH_XML2([], [have_libxml="yes"], [have_libxml="no"])
-if test "${have_libxml}" != yes; then
- AC_MSG_ERROR([libxml not found, please install it])
-else
- CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
- LIBS="$LIBS $XML_LIBS"
-fi
-
-
-
-dnl Checks for header files.
-#AC_CHECK_HEADERS([fcntl.h stddef.h stdlib.h string.h unistd.h])
-
-dnl Checks for typedefs, structures, and compiler characteristics.
-#AC_TYPE_PID_T
-#AC_TYPE_SIZE_T
-#AC_TYPE_SSIZE_T
-
-dnl Checks for library functions.
-#AC_FUNC_ALLOCA
-#AC_FUNC_FORK
-#AC_FUNC_MALLOC
-#AC_FUNC_REALLOC
-#AC_CHECK_FUNCS([strcasecmp strchr strdup strncasecmp strndup])
+PKG_PROG_PKG_CONFIG()
+
+PKG_CHECK_MODULES(LIBOAUTH, oauth)
+PKG_CHECK_MODULES(LIBPCRE, libpcre)
+PKG_CHECK_MODULES([LIBCURL], [libcurl])
+PKG_CHECK_MODULES([XML], [libxml-2.0])
+
+AC_SEARCH_LIBS([dlopen], [dl])