Make the discovery of the build .so file more robust.

Different versions of Python apparently generate different
directory names, there doesn't seem to be any more reliable
method of the .so file discovery than brutal force of the shell
find command.

Author: mcepl

Makefile

@@ -42,15 +42,13 @@ PY_BIN  := python3
 VERSION := $(shell cd src;$(PY_BIN) -c "from setup_common import *; print(get_version());")
 PACKAGE := python-dmidecode
 PY_VER  := $(shell $(PY_BIN) -c 'import sys; print("%d.%d"%sys.version_info[0:2])')
-PY_VER_DL := $(shell echo $(PY_VER) | tr -d '.')
 PY_MV   := $(shell echo $(PY_VER) | cut -b 1)
 PY      := python$(PY_VER)
-SO_PATH := build/lib.linux-$(shell uname -m)-cpython-$(PY_VER_DL)
 ifeq ($(PY_MV),2)
-	SO  := $(SO_PATH)/dmidecodemod.so
+	SOLIB  := dmidecodemod.so
 else
 	SOABI := $(shell $(PY_BIN) -c 'import sysconfig; print(sysconfig.get_config_var("SOABI"))')
-	SO  := $(SO_PATH)/dmidecodemod.$(SOABI).so
+	SOLIB  := dmidecodemod.$(SOABI).so
 endif
 SHELL	:= /bin/bash
 
@@ -60,10 +58,10 @@ SHELL	:= /bin/bash
 all : build dmidump
 
 build: $(PY)-dmidecodemod.so
-$(PY)-dmidecodemod.so: $(SO)
-	cp $< $@
-$(SO):
+
+$(PY)-dmidecodemod.so:
 	$(PY) src/setup.py build
+	cp $$(find build -name $(SOLIB)) $@
 
 dmidump : src/util.o src/efi.o src/dmilog.o
 	$(CC) -o $@ src/dmidump.c $^ -g -Wall -D_DMIDUMP_MAIN_