build: Report gcc and binutils versions in debug log

Attempt to extract the gcc and binutils versions.  Report that
information in the debug log.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 43 insertions, 4 deletions

diff --git a/scripts/buildversion.py b/scripts/buildversion.py
index b948134..56bfcfa 100755
--- a/scripts/buildversion.py
+++ b/scripts/buildversion.py
@@ -4,11 +4,12 @@
 # Copyright (C) 2015  Kevin O'Connor <kevin@koconnor.net>
 #
 # This file may be distributed under the terms of the GNU GPLv3 license.
-import sys, os, subprocess, time, socket, optparse
+import sys, os, subprocess, time, socket, optparse, re
 
 VERSION_FORMAT = """
 /* DO NOT EDIT!  This is an autogenerated file.  See scripts/buildversion.py. */
 #define BUILD_VERSION "%s"
+#define BUILD_TOOLS "%s"
 """
 
 # Obtain version info from "git" program
@@ -35,23 +36,61 @@ def file_version():
     return ver
 
 # Generate an output file with the version information
-def write_version(outfile, version):
+def write_version(outfile, version, toolstr):
     sys.stdout.write("Version: %s\n" % (version,))
     f = open(outfile, 'w')
-    f.write(VERSION_FORMAT % (version,))
+    f.write(VERSION_FORMAT % (version, toolstr))
     f.close()
 
+re_gcc = re.compile(r'^(?P<prog>.*) \(GCC\) (?P<version>.*)$')
+re_binutils = re.compile(r'^GNU (?P<prog>.*) version (?P<version>.*)$')
+
+# Run "tool --version" for each specified tool and extract versions
+def tool_versions(tools):
+    tools = [t.strip() for t in tools.split(';')]
+    gcc = binutils = ""
+    success = 0
+    for tool in tools:
+        try:
+            ver = subprocess.check_output([tool, '--version']).decode()
+        except:
+            continue
+        ver = ver.split('\n')[0]
+        m = re_gcc.match(ver)
+        if m:
+            ver = m.group('version')
+            if gcc and gcc != ver:
+                gcc = "mixed"
+                continue
+            gcc = ver
+            success += 1
+            continue
+        m = re_binutils.match(ver)
+        if m:
+            ver = m.group('version')
+            if binutils and binutils != ver:
+                binutils = "mixed"
+                continue
+            binutils = ver
+            success += 1
+    cleanbuild = binutils and gcc and success == len(tools)
+    return cleanbuild, "gcc: %s binutils: %s" % (gcc, binutils)
+
 def main():
     usage = "%prog [options] <outputheader.h>"
     opts = optparse.OptionParser(usage)
     opts.add_option("-e", "--extra", dest="extra", default="",
                     help="extra version string to append to version")
+    opts.add_option("-t", "--tools", dest="tools", default="",
+                    help="list of build programs to extra version from")
 
     options, args = opts.parse_args()
     if len(args) != 1:
         opts.error("Incorrect arguments")
     outfile = args[0]
 
+    cleanbuild, toolstr = tool_versions(options.tools)
+
     ver = git_version()
     if not ver:
         ver = file_version()
@@ -60,7 +99,7 @@ def main():
     btime = time.strftime("%Y%m%d_%H%M%S")
     hostname = socket.gethostname()
     ver = "%s-%s-%s%s" % (ver, btime, hostname, options.extra)
-    write_version(outfile, ver)
+    write_version(outfile, ver, toolstr)
 
 if __name__ == '__main__':
     main()