gcc-4.9: move binaries to find build breakages

As per:
https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/master/GCC_4_9_DEPRECATION.md
We're about to remove gcc-4.9; move the binaries to see if we can spot
any build breakages in pre or post submit testing.

Build cops may revert this change if necessary.

Please report any unexpected build breakages to: android-llvm@googlegroups.com

Bug: 147240075
Change-Id: I9574505c60ccdf77d0b35ad6a03fd745ca9d7b86
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/bin/arm-linux-androideabi-gcc-broken b/bin/arm-linux-androideabi-gcc-broken
new file mode 100755
index 0000000..97c02a0
--- /dev/null
+++ b/bin/arm-linux-androideabi-gcc-broken
@@ -0,0 +1,77 @@
+#!/usr/bin/python
+
+from __future__ import print_function
+import os
+import sys
+import time
+
+class CompilerWrapper():
+  def __init__(self, argv):
+    self.args = argv
+    self.execargs = []
+    self.real_compiler = None
+    self.argv0 = None
+    self.append_flags = []
+    self.prepend_flags = []
+    self.custom_flags = {
+      '--gomacc-path': None
+    }
+
+  def set_real_compiler(self):
+    """Find the real compiler with the absolute path."""
+    compiler_path = os.path.dirname(os.path.abspath(__file__))
+    if os.path.islink(__file__):
+      compiler = os.path.basename(os.readlink(__file__))
+    else:
+      compiler = os.path.basename(os.path.abspath(__file__))
+    self.real_compiler = os.path.join(
+        compiler_path,
+        "40337694-a816-11e9-ad6c-9bcb01b061bd")
+    self.argv0 = self.real_compiler
+
+  def process_gomacc_command(self):
+    """Return the gomacc command if '--gomacc-path' is set."""
+    gomacc = self.custom_flags['--gomacc-path']
+    if gomacc and os.path.isfile(gomacc):
+      self.argv0 = gomacc
+      self.execargs += [gomacc]
+
+  def parse_custom_flags(self):
+    i = 0
+    args = []
+    while i < len(self.args):
+      if self.args[i] in self.custom_flags:
+        self.custom_flags[self.args[i]] = self.args[i + 1]
+        i = i + 2
+      else:
+        args.append(self.args[i])
+        i = i + 1
+    self.args = args
+
+  def add_flags(self):
+    self.args = self.prepend_flags + self.args + self.append_flags
+
+  def print_deprecation_warning(self):
+    print("Android GCC has been deprecated in favor of Clang, and will be removed from\n"
+          "Android in 2020-01 as per the deprecation plan in:\n"
+          "https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/master/GCC_4_9_DEPRECATION.md\n\n",
+          file=sys.stderr)
+
+
+  def invoke_compiler(self):
+    self.print_deprecation_warning()
+    self.set_real_compiler()
+    self.parse_custom_flags()
+    self.process_gomacc_command()
+    self.add_flags()
+    self.execargs += [self.real_compiler] + self.args
+    time.sleep(3)
+    os.execv(self.argv0, self.execargs)
+
+
+def main(argv):
+  cw = CompilerWrapper(argv[1:])
+  cw.invoke_compiler()
+
+if __name__ == "__main__":
+  main(sys.argv)