added perseverance in python-config selection during extension module build. Try python-config then python2-config and finally python3-config on the python2 branches.

git-svn-id: svn+ssh://svn.code.sf.net/p/migrid/code/trunk@6172 b75ad72c-e7d7-11dd-a971-7dbc132099af

Author: jonasbardino

mig/src/libnss-mig/Makefile

@@ -38,7 +38,7 @@ DEBUG_CFLAGS=
 CC = gcc
 INCLUDES=
 # NOTE: try python-config first: if 2 and 3 are installed default is there
-PYCONF = $(shell which python-config 2> /dev/null || which python3-config 2> /dev/null)
+PYCONF = $(shell which python-config 2> /dev/null || which python2-config 2> /dev/null || which python3-config 2> /dev/null)
 DEFINES=$(MIG_DEFAULTS) \
 		$(DEBUG_DEFINES)
 CFLAGS=${DEBUG_CFLAGS} -Wall -Wpedantic $(shell ${PYCONF} --cflags)

mig/src/libpam-mig/Makefile

@@ -41,7 +41,7 @@ DEBUG_CFLAGS=
 
 CC = gcc
 # NOTE: try python-config first: if 2 and 3 are installed default is there
-PYCONF = $(shell which python-config 2> /dev/null || which python3-config 2> /dev/null)
+PYCONF = $(shell which python-config 2> /dev/null || which python2-config 2> /dev/null || which python3-config 2> /dev/null)
 PYLDFLAGS = $(shell ${PYCONF} --ldflags --embed  | egrep -v '^Usage: ' || ${PYCONF} --ldflags)
 LIBPYTHON = $(shell echo ${PYLDFLAGS} | sed 's/.*-l\(python[^ ]\+\).*/lib\1.so/g')
 BUILD_DEFINES =	-D'LIBPYTHON="${LIBPYTHON}"'