package/libffi/0002-Fix-use-of-compact-eh-frames-on-MIPS.patch

   1 From 31b6b6bc14197cd4183bdbd311fddeb36b5ae100 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?J=C3=B6rg=20Krause?= <joerg.krause@embedded.rocks>
   3 Date: Sat, 19 Sep 2015 22:53:29 +0200
   4 Subject: [PATCH] Fix use of compact eh frames on MIPS
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Newer MIPS toolchains use a different (compact) eh_frame format.
  10 libffi don't like them, so we have to switch to the older format.
  11
  12 This patch add -mno-compact-eh to CFLAGS when compiling for
  13 Mips and compiler support it.
  14
  15 Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
  16 [unfuzz for 3.2.1]
  17 Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
  18 ---
  19  configure.ac | 10 ++++++++++
  20  1 file changed, 10 insertions(+)
  21
  22 diff --git a/configure.ac b/configure.ac
  23 index a7bf5ee..36cd0d4 100644
  24 --- a/configure.ac
  25 +++ b/configure.ac
  26 @@ -469,6 +469,16 @@ esac
  27  AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
  28  AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
  29
  30 +if test x$TARGET = xMIPS; then
  31 +    save_CFLAGS="$CFLAGS"
  32 +    CFLAGS=-mno-compact-eh
  33 +    AC_MSG_CHECKING([whether the C compiler needs -mno-compact-eh])
  34 +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
  35 +                      [AC_MSG_RESULT([yes])]; [save_CFLAGS="$save_CFLAGS -mno-compact-eh"],
  36 +                      [AC_MSG_RESULT([no])])
  37 +    CFLAGS="$save_CFLAGS"
  38 +fi
  39 +
  40  if test x$TARGET = xX86_64; then
  41      AC_CACHE_CHECK([toolchain supports unwind section type],
  42         libffi_cv_as_x86_64_unwind_section_type, [
  43 --
  44 2.5.3
  45