cmakelists: fix libpam finding for base ubuntu (#1027)

Author: rsvzz

CMakeLists.txt

@@ -93,11 +93,16 @@ find_library(PAM_FOUND NAMES pam libpam)
 if(PAM_FOUND)
   set(PAM_LIB ${PAM_FOUND})
 else()
-  pkg_check_modules(PAM IMPORTED_TARGET pam libpam)
+  pkg_check_modules(PAM IMPORTED_TARGET libpam)
   if(PAM_FOUND)
     set(PAM_LIB PkgConfig::PAM)
   else()
-    message(FATAL_ERROR "The required library libpam was not found.")
+    pkg_check_modules(PAM IMPORTED_TARGET pam)
+      if(PAM_FOUND)
+        set(PAM_LIB PkgConfig::PAM)
+      else()
+        message(FATAL_ERROR "The required library libpam was not found.")
+      endif()
   endif()
 endif()