build_analyzer.py bails after first build error

build_analyzer.py

@@ -1,7 +1,8 @@
+# Python 3 script to build the analyzer
+
 import os, glob, platform
 
 #find out if we're running on mac or linux and set the dynamic library extension
-dylib_ext = ""
 if platform.system().lower() == "darwin":
     dylib_ext = ".dylib"
 else:
@@ -45,6 +46,12 @@ link_dependencies = [ "-lAnalyzer" ] #refers to libAnalyzer.dylib or libAnalyzer
 debug_compile_flags = "-O0 -w -c -fpic -g"
 release_compile_flags = "-O3 -w -c -fpic"
 
+def run_command(cmd):
+    "Display cmd, then run it in a subshell, raise if there's an error"
+    print(cmd)
+    if os.system(cmd):
+        raise Exception("Shell execution returned nonzero status")
+
 #loop through all the cpp files, build up the gcc command line, and attempt to compile each cpp file
 for cpp_file in cpp_files:
 
@@ -66,10 +73,8 @@ for cpp_file in cpp_files:
     debug_command += "\"" + "source/" + cpp_file + "\"" #the cpp file to compile
 
     #run the commands from the command line
-    print(release_command)
-    os.system( release_command )
-    print(debug_command)
-    os.system( debug_command )
+    run_command(release_command)
+    run_command(debug_command)
     
 #lastly, link
 #g++
@@ -111,9 +116,5 @@ for cpp_file in cpp_files:
     debug_command += "debug/" + cpp_file.replace( ".cpp", ".o" ) + " "
     
 #run the commands from the command line
-print(release_command)
-os.system( release_command )
-print(debug_command)
-os.system( debug_command )
-
-        
+run_command(release_command)
+run_command(debug_command)