Generate the per-arch .map files at build time.

We shouldn't be checking in these generated files...

Bug: N/A
Test: ran tests
Change-Id: Ib67c1ba839eacd7acebd713e1dcd4dd2c25d67f0

2 files changed, 35 insertions, 0 deletions

diff --git a/tools/Android.bp b/tools/Android.bp
index b44c29601..c540c3cea 100644
--- a/tools/Android.bp
+++ b/tools/Android.bp
@@ -1 +1,6 @@
 subdirs = ["*"]
+
+filegroup {
+    name: "bionic-generate-version-script",
+    srcs: ["generate-version-script.py"],
+}
diff --git a/tools/generate-version-script.py b/tools/generate-version-script.py
new file mode 100755
index 000000000..acfe21859
--- /dev/null
+++ b/tools/generate-version-script.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+# This tool is used to generate the version scripts for libc, libm, libdl,
+# and libstdc++ for every architecture.
+
+# usage: generate-version-script.py ARCH INPUT OUTPUT
+
+import sys
+
+def has_arch_tags(tags):
+  for arch in ["arm", "arm64", "x86", "x86_64"]:
+    if arch in tags:
+      return True
+  return False
+
+def GenerateVersionScript(arch, in_filename, out_filename):
+  with open(out_filename, "w") as fout:
+    with open(in_filename, "r") as fin:
+      for line in fin:
+        index = line.find("#")
+        if index != -1:
+          tags = line[index+1:].split()
+          if arch not in tags and has_arch_tags(tags):
+            continue
+        fout.write(line)
+
+arch = sys.argv[1]
+in_filename = sys.argv[2]
+out_filename = sys.argv[3]
+GenerateVersionScript(arch, in_filename, out_filename)