1 files changed, 44 insertions, 0 deletions
diff --git a/build/autoconf/frameptr.m4 b/build/autoconf/frameptr.m4
new file mode 100644
index 000000000..e7e50330e
--- /dev/null
+++ b/build/autoconf/frameptr.m4
@@ -0,0 +1,44 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Set MOZ_FRAMEPTR_FLAGS to the flags that should be used for enabling or
+dnl disabling frame pointers in this architecture based on the configure
+dnl options
+
+AC_DEFUN([MOZ_SET_FRAMEPTR_FLAGS], [
+  case "$target" in
+  *android*)
+    unwind_tables="-funwind-tables"
+    ;;
+  esac
+  if test "$GNU_CC"; then
+    MOZ_ENABLE_FRAME_PTR="-fno-omit-frame-pointer $unwind_tables"
+    MOZ_DISABLE_FRAME_PTR="-fomit-frame-pointer"
+    if test "$CPU_ARCH" = arm; then
+      # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54398
+      MOZ_ENABLE_FRAME_PTR="$unwind_tables"
+    fi
+  else
+    case "$target" in
+    dnl Oy (Frame-Pointer Omission) is only support on x86 compilers
+    *-mingw32*)
+      MOZ_ENABLE_FRAME_PTR="-Oy-"
+      MOZ_DISABLE_FRAME_PTR="-Oy"
+    ;;
+    esac
+  fi
+
+  # If we are debugging, profiling, using sanitizers, or on win32 we want a
+  # frame pointer.
+  if test -z "$MOZ_OPTIMIZE" -o \
+          -n "$MOZ_PROFILING" -o \
+          -n "$MOZ_DEBUG" -o \
+          -n "$MOZ_MSAN" -o \
+          -n "$MOZ_ASAN" -o \
+          "$OS_ARCH:$CPU_ARCH" = "WINNT:x86"; then
+    MOZ_FRAMEPTR_FLAGS="$MOZ_ENABLE_FRAME_PTR"
+  else
+    MOZ_FRAMEPTR_FLAGS="$MOZ_DISABLE_FRAME_PTR"
+  fi
+])