Properly check for availability of DES and improve build toolchain (#31)

* Fix testing for availability of DES
* Remove configure file, it should be in git anyway
* Update autoconf stuff
* Change Makefile.am to fix make dist
* Add bugfix version to version string and increase version

Author: RincewindsHat

.github/workflows/makefile.yml

@@ -20,7 +20,9 @@ jobs:
         sudo .github/prepare_ubuntu.sh
 
     - name: configure
-      run: ./configure
+      run: |
+        autoreconf
+        ./configure
 
     - name: Make
       run: make
@@ -39,7 +41,9 @@ jobs:
         sudo .github/prepare_ubuntu.sh
 
     - name: configure
-      run: ./configure
+      run: |
+        autoreconf
+        ./configure
 
     - name: Make
       run: make

INSTALL

@@ -1,5 +1,5 @@
-OBJS = snmp_bulkget.o utils.o
-
 libexec_PROGRAMS = check_interfaces
 
-check_interfaces_LDADD = $(OBJS)
+include_HEADERS = snmp_bulkget.h utils.h
+
+check_interfaces_SOURCES = check_interfaces.c snmp_bulkget.c utils.c