configure.ac: Use pkg-config to check for python

Using python-config does not work when cross-compiling, since it
can only be run on the host system.

diff --git a/configure.ac b/configure.ac
index 88855e010a0b10144a5a695733150f8f23564677..deedd5c697dfc82f4ad8a9354a7eddeea8332a93 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -89,10 +89,11 @@ AM_PATH_GLIB_2_0([2.24.0],
         [CFLAGS="$CFLAGS $GLIB_CFLAGS"; LIBS="$LIBS $GLIB_LIBS"])
 
 # Python support. We require at least Python >= 3.0.
-AC_ARG_VAR([PYTHON3_CONFIG], [path to python3-config utility])
-AC_CHECK_PROGS([PYTHON3_CONFIG], [python3-config python3.3-config python-config-3.3 python3.2-config python-config-3.2 python3.1-config python-config-3.1 python3.0-config python-config-3.0])
 CPPFLAGS_PYTHON=""
 LDFLAGS_PYTHON=""
+PKG_CHECK_MODULES([python3], [python3 >= 3.0],
+       [have_python3="yes"; CPPFLAGS_PYTHON="$python3_CFLAGS";
+       LDFLAGS_PYTHON="$python3_LIBS"], [have_python3="no"])
 case "$build" in
 *mingw*)
        # We currently hardcode the paths to the Python 3.2 default install
@@ -103,17 +104,8 @@ case "$build" in
        LDFLAGS_PYTHON="-L/c/Python32/libs -Lc:/Python32/libs -lpython32"
        ;;
 *)
-       # We know that Linux has 'python3-config'.
-       # On Darwin, Macports has python3.x-config, fink has python3-config.
-       # Mac OS X (Snow Leopard) ships with 'python-config' per default, but
-       # that's Python 2.x, so not useful for us.
-       # Everything else is untested, we just hope some $PYTHON3_CONFIG
-       # (i.e., any of the tools we check for above) is available.
-       if test -n "$PYTHON3_CONFIG"; then
-               CPPFLAGS_PYTHON="$($PYTHON3_CONFIG --includes)"
-               LDFLAGS_PYTHON="$($PYTHON3_CONFIG --ldflags)"
-       else
-               AC_MSG_ERROR([python3-config not found])
+       if test x"$have_python3" = xno; then
+               AC_MSG_ERROR([python3 not found])
        fi
        ;;
 esac