Xen devel - Apr 2012 - [PATCH] autoconf: use python-config when present, if not switch to distutils

Use python-config utility when possible, and if it is not present switch to
distutils.

Should fix the bug reported by Olaf Hering on SuSE.

Rerun autoconf after applying the patch.

Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
Cc: Olaf Hering <olaf@aepfle.de>
---
 tools/m4/python_devel.m4 |   42 +++++++++++++++++++++++++-----------------
 1 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/tools/m4/python_devel.m4 b/tools/m4/python_devel.m4
index 8bfcd0c..0a2202c 100644
--- a/tools/m4/python_devel.m4
+++ b/tools/m4/python_devel.m4
@@ -1,23 +1,31 @@
 AC_DEFUN([AX_CHECK_PYTHON_DEVEL], [
-ac_python_version=`$PYTHON -c ''import distutils.sysconfig; \
-    print distutils.sysconfig.get_config_var("VERSION")''`
 ac_previous_cppflags=$CPPFLAGS
-CPPFLAGS="$CFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print "-I" +
distutils.sysconfig.get_config_var("INCLUDEPY")''`"
-CPPFLAGS="$CPPFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print
distutils.sysconfig.get_config_var("CFLAGS")''`"
 ac_previous_ldflags=$LDFLAGS
-LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print distutils.sysconfig.get_config_var("LIBS")''`"
-LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print
distutils.sysconfig.get_config_var("SYSLIBS")''`"
-LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print "-L" + distutils.sysconfig.get_python_lib(plat_specific=1,\
-    standard_lib=1) + "/config"''`"
-LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print
distutils.sysconfig.get_config_var("LINKFORSHARED")''`"
-LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
-    print
distutils.sysconfig.get_config_var("LDFLAGS")''`"
+ac_python_version=`$PYTHON -c ''import distutils.sysconfig; \
+    print distutils.sysconfig.get_config_var("VERSION")''`
+AC_PATH_PROG([pyconfig], [$PYTHON-config], [no])
+AS_IF([test x"$pyconfig" == x"no"], [
+    dnl For those that don''t have python-config
+    CPPFLAGS="$CFLAGS `$PYTHON -c ''import distutils.sysconfig; \
+        print "-I" +
distutils.sysconfig.get_config_var("INCLUDEPY")''`"
+    CPPFLAGS="$CPPFLAGS `$PYTHON -c ''import distutils.sysconfig;
\
+        print
distutils.sysconfig.get_config_var("CFLAGS")''`"
+    LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
+        print
distutils.sysconfig.get_config_var("LIBS")''`"
+    LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
+        print
distutils.sysconfig.get_config_var("SYSLIBS")''`"
+    LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
+        print "-L" +
distutils.sysconfig.get_python_lib(plat_specific=1,\
+        standard_lib=1) + "/config"''`"
+    LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
+        print
distutils.sysconfig.get_config_var("LINKFORSHARED")''`"
+    LDFLAGS="$LDFLAGS `$PYTHON -c ''import distutils.sysconfig; \
+        print
distutils.sysconfig.get_config_var("LDFLAGS")''`"
+], [
+    dnl If python-config is found use it
+    CPPFLAGS="$CFLAGS `$PYTHON-config --cflags`"
+    LDFLAGS="$LDFLAGS `$PYTHON-config --ldflags`"
+])
 
 AC_CHECK_HEADER([Python.h], [],
     [AC_MSG_ERROR([Unable to find Python development headers])],)
-- 
1.7.7.5 (Apple Git-26)

On Tue, Apr 10, Roger Pau Monne wrote:
> Use python-config utility when possible, and if it is not present switch to
> distutils.
> 
> Should fix the bug reported by Olaf Hering on SuSE.
> 
> Rerun autoconf after applying the patch.
Yes, this fixes the build on openSuSE 11.4 and later.

Olaf

Roger Pau Monne writes ("[Xen-devel] [PATCH] autoconf: use python-config
when present, if not switch to distutils"):
> Use python-config utility when possible, and if it is not present switch to
> distutils.
> 
> Should fix the bug reported by Olaf Hering on SuSE.
> 
> Rerun autoconf after applying the patch.
> 
> Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
> Cc: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>