[toolchain] introduce option to enable setjump()/longjump() based C++ exceptions...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27261 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
index c2d17cb..e6434d0 100644 (file)
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -66,6 +66,15 @@ config TLS_SUPPORT
        help
            Enable Thread-local storage support
 
+config SJLJ_EXCEPTIONS
+       bool
+       prompt "Use setjump()/longjump() exceptions" if TOOLCHAINOPTS
+       default n
+       help
+           Use old setjump()/longjump() exceptions instead of the newer
+           frame unwinding exceptions handling routines.  Warning: increases
+           code size and runtime memory usage.
+
 config INSTALL_LIBSTDCPP
        bool
        prompt "Build/install c++ compiler and libstdc++?" if TOOLCHAINOPTS

diff --git a/toolchain/gcc/final/Makefile b/toolchain/gcc/final/Makefile
index 1decc95..337f7ab 100644 (file)
--- a/toolchain/gcc/final/Makefile
+++ b/toolchain/gcc/final/Makefile
@@ -22,6 +22,11 @@ else
        --disable-tls
 endif
 
+ifneq ($(CONFIG_SJLJ_EXCEPTIONS),)
+  GCC_CONFIGURE += \
+       --enable-sjlj-exceptions
+endif
+
 define Host/Configure
        mkdir -p $(GCC_BUILD_DIR) $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)
        # Important!  Required for limits.h to be fixed.