Re: [Xen-devel] [PATCH] autoconf: fix python-dev detection on old python versions

["Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>]

The python-config error is fixed, but still get the following message:

checking Python.h presence... yes
checking for Python.h... yes
checking for PyArg_ParseTuple in -lpython2.4... no
configure: error: Unable to find a suitable python development library

best regards
yang


> -----Original Message-----
> From: Roger Pau Monné [mailto:royger@xxxxxxxxx] On Behalf Of Roger Pau
> Monne
> Sent: Thursday, March 29, 2012 9:55 PM
> To: xen-devel@xxxxxxxxxxxxx
> Cc: Roger Pau Monne; Zhang, Yang Z; KUWAMURA Shin'ya; Ian Campbell
> Subject: [PATCH] autoconf: fix python-dev detection on old python versions
> 
> Replaced the use of python-config (that is only present in Python > 2.5.x)
> with the distutils python module.
> 
> Please run ./autogen.sh after applying the patch.
> 
> Signed-off-by: Roger Pau Monne <roger.pau@xxxxxxxxxxxxx>
> Cc: Zhang, Yang Z <yang.z.zhang@xxxxxxxxx>
> Cc: KUWAMURA Shin'ya <kuwa@xxxxxxxxxxxxxx>
> Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
> ---
>  tools/m4/python_devel.m4 |   34 +++++++++++++++-------------------
>  1 files changed, 15 insertions(+), 19 deletions(-)
> 
> diff --git a/tools/m4/python_devel.m4 b/tools/m4/python_devel.m4
> index 3bcca7b..5f161f1 100644
> --- a/tools/m4/python_devel.m4
> +++ b/tools/m4/python_devel.m4
> @@ -1,27 +1,23 @@
>  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-config --includes`"
> +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=$LDFLAGS
> -for flag in `$PYTHON-config --ldflags`
> -do
> -    case $flag in
> -    -L*)
> -        LDFLAGS="$LDLFAGS $flag"
> -        ;;
> -    -lpython*)
> -        python_lib=`echo $flag | sed 's/^-l//'`
> -        ;;
> -    -l*)
> -        # Ignore other libraries, we are only interested in testing 
> python-dev
> -        ;;
> -    *)
> -        AC_MSG_WARN([Strange ldflag found in $PYTHON-config output:
> $flag])
> -        ;;
> -    esac
> -done
> +LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
> +    print distutils.sysconfig.get_config_var("LIBS")'`"
> +LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
> +    print "-L" + distutils.sysconfig.get_python_lib(plat_specific=1,\
> +    standard_lib=1) + "/config"'`"
> +LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
> +    print distutils.sysconfig.get_config_var("LINKFORSHARED")'`"
> +
>  AC_CHECK_HEADER([Python.h], [],
>      [AC_MSG_ERROR([Unable to find Python development headers])],)
> -AC_CHECK_LIB($python_lib, PyArg_ParseTuple, [],
> +AC_CHECK_LIB(python$ac_python_version, PyArg_ParseTuple, [],
>      [AC_MSG_ERROR([Unable to find a suitable python development
> library])])
>  CPPFLAGS=$ac_previous_cppflags
>  LDLFAGS=$ac_previous_ldflags
> --
> 1.7.7.5 (Apple Git-26)


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