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From 31b6b6bc14197cd4183bdbd311fddeb36b5ae100 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?J=C3=B6rg=20Krause?= <joerg.krause@embedded.rocks>

Date: Sat, 19 Sep 2015 22:53:29 +0200

Subject: [PATCH] Fix use of compact eh frames on MIPS

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​

Newer MIPS toolchains use a different (compact) eh_frame format.

libffi don't like them, so we have to switch to the older format.

​

This patch add -mno-compact-eh to CFLAGS when compiling for

Mips and compiler support it.

​

Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>

[unfuzz for 3.2.1]

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>

---

 configure.ac | 10 ++++++++++

 1 file changed, 10 insertions(+)

​

diff --git a/configure.ac b/configure.ac

index a7bf5ee..36cd0d4 100644

--- a/configure.ac

+++ b/configure.ac

@@ -469,6 +469,16 @@ esac

 AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)

 AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)

+if test x$TARGET = xMIPS; then

+    save_CFLAGS="$CFLAGS"

+    CFLAGS=-mno-compact-eh

+    AC_MSG_CHECKING([whether the C compiler needs -mno-compact-eh])

+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],

+                      [AC_MSG_RESULT([yes])]; [save_CFLAGS="$save_CFLAGS -mno-compact-eh"],

+                      [AC_MSG_RESULT([no])])

+    CFLAGS="$save_CFLAGS"

+fi

+

 if test x$TARGET = xX86_64; then

     AC_CACHE_CHECK([toolchain supports unwind section type],

    libffi_cv_as_x86_64_unwind_section_type, [

-- 

2.5.3

​