From f8c2029ef0bf83ceb2bb10ee28362305cfa9cdf2 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Thu, 18 Aug 2011 14:43:16 +0300
Subject: [PATCH] Improve detection of Python 3.2 installations

Because of ABI tagging, the library version number might no longer be
exactly the Python version number, so do extra lookups.  This affects
installations without a shared library, such as ActiveState's
installer.

Also update the way to detect the location of the 'config' directory,
which can also be versioned.

Ashesh Vashi
---
 config/python.m4 | 9 +++++++--
 configure        | 9 +++++++--
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/config/python.m4 b/config/python.m4
index ec357c2e48..1ef77a91dd 100644
--- a/config/python.m4
+++ b/config/python.m4
@@ -32,7 +32,7 @@ fi
 AC_MSG_CHECKING([Python configuration directory])
 python_majorversion=`${PYTHON} -c "import sys; print(sys.version[[0]])"`
 python_version=`${PYTHON} -c "import sys; print(sys.version[[:3]])"`
-python_configdir=`${PYTHON} -c "from distutils.sysconfig import get_python_lib as f; import os; print(os.path.join(f(plat_specific=1,standard_lib=1),'config'))"`
+python_configdir=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBPL'))))"`
 python_includespec=`${PYTHON} -c "import distutils.sysconfig; print('-I'+distutils.sysconfig.get_python_inc())"`
 
 AC_SUBST(python_majorversion)[]dnl
@@ -69,7 +69,12 @@ then
 else
 	# Old way: use libpython from python_configdir
 	python_libdir="${python_configdir}"
-	python_libspec="-L${python_libdir} -lpython${python_version}"
+	# LDVERSION was introduced in Python 3.2.
+	python_ldversion=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LDVERSION'))))"`
+	if test x"${python_ldversion}" = x""; then
+		python_ldversion=$python_version
+	fi
+	python_libspec="-L${python_libdir} -lpython${python_ldversion}"
 fi
 
 python_additional_libs=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBS','LIBC','LIBM','BASEMODLIBS'))))"`
diff --git a/configure b/configure
index ddc25d53ac..2e764fbbd0 100755
--- a/configure
+++ b/configure
@@ -7242,7 +7242,7 @@ fi
 $as_echo_n "checking Python configuration directory... " >&6; }
 python_majorversion=`${PYTHON} -c "import sys; print(sys.version[0])"`
 python_version=`${PYTHON} -c "import sys; print(sys.version[:3])"`
-python_configdir=`${PYTHON} -c "from distutils.sysconfig import get_python_lib as f; import os; print(os.path.join(f(plat_specific=1,standard_lib=1),'config'))"`
+python_configdir=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBPL'))))"`
 python_includespec=`${PYTHON} -c "import distutils.sysconfig; print('-I'+distutils.sysconfig.get_python_inc())"`
 
 # This should be enough of a message.
@@ -7266,7 +7266,12 @@ then
 else
 	# Old way: use libpython from python_configdir
 	python_libdir="${python_configdir}"
-	python_libspec="-L${python_libdir} -lpython${python_version}"
+	# LDVERSION was introduced in Python 3.2.
+	python_ldversion=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LDVERSION'))))"`
+	if test x"${python_ldversion}" = x""; then
+		python_ldversion=$python_version
+	fi
+	python_libspec="-L${python_libdir} -lpython${python_ldversion}"
 fi
 
 python_additional_libs=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBS','LIBC','LIBM','BASEMODLIBS'))))"`