[gentoo-python] [PATCH] Support python_get_library_path().

[Michał Górny]

Needed for dev-python/shiboken.
---
 gx86/eclass/python-utils-r1.eclass | 43 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/gx86/eclass/python-utils-r1.eclass b/gx86/eclass/python-utils-r1.eclass
index b425302..5facf33 100644
--- a/gx86/eclass/python-utils-r1.eclass
+++ b/gx86/eclass/python-utils-r1.eclass
@@ -124,6 +124,18 @@ _python_impl_supported() {
 # /usr/include/python2.6
 # @CODE
 
+# @ECLASS-VARIABLE: PYTHON_LIBPATH
+# @DESCRIPTION:
+# The path to Python library.
+#
+# Set and exported on request using python_export().
+# Valid only for CPython.
+#
+# Example value:
+# @CODE
+# /usr/lib64/libpython2.6.so
+# @CODE
+
 # @ECLASS-VARIABLE: PYTHON_PKG_DEP
 # @DESCRIPTION:
 # The complete dependency on a particular Python package as a string.
@@ -219,6 +231,22 @@ python_export() {
 				export PYTHON_INCLUDEDIR=${EPREFIX}${dir}
 				debug-print "${FUNCNAME}: PYTHON_INCLUDEDIR = ${PYTHON_INCLUDEDIR}"
 				;;
+			PYTHON_LIBPATH)
+				local libname
+				case "${impl}" in
+					python*)
+						libname=lib${impl}
+						;;
+					*)
+						die "${EPYTHON} lacks a dynamic library"
+						;;
+				esac
+
+				local path=${EPREFIX}/usr/$(get_libdir)
+
+				export PYTHON_LIBPATH=${path}/${libname}$(get_libname)
+				debug-print "${FUNCNAME}: PYTHON_LIBPATH = ${PYTHON_LIBPATH}"
+				;;
 			PYTHON_PKG_DEP)
 				local d
 				case ${impl} in
@@ -310,6 +338,21 @@ python_get_includedir() {
 	echo "${PYTHON_INCLUDEDIR}"
 }
 
+# @FUNCTION: python_get_library_path
+# @USAGE: [<impl>]
+# @DESCRIPTION:
+# Obtain and print the Python library path for the given implementation.
+# If no implementation is provided, ${EPYTHON} will be used.
+#
+# Please note that this function can be used with CPython only. Use
+# in another implementation will result in a fatal failure.
+python_get_library_path() {
+	debug-print-function ${FUNCNAME} "${@}"
+
+	python_export "${@}" PYTHON_LIBPATH
+	echo "${PYTHON_LIBPATH}"
+}
+
 # @FUNCTION: _python_rewrite_shebang
 # @INTERNAL
 # @USAGE: [<EPYTHON>] <path>...
-- 
1.8.1.2