From be0e44373d51c7d47291b8c6555ed2cc9ee8887e Mon Sep 17 00:00:00 2001
From: Matt Clarkson <mattyclarkson@gmail.com>
Date: Tue, 25 Apr 2017 16:46:47 +0100
Subject: [PATCH] Allow asmflags to pass through to GCC

This is especially useful when cross-compiling Boost.Context for
ARM32 as you need to pass the -mfpu=neon (or similar) to correctly
compile the assembly there
---
 src/tools/gcc.jam | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tools/gcc.jam b/src/tools/gcc.jam
index 0f346a501..e90088aff 100644
--- a/src/tools/gcc.jam
+++ b/src/tools/gcc.jam
@@ -500,6 +500,7 @@ if [ os.name ] = HPUX
 
 toolset.flags gcc.compile USER_OPTIONS <cflags> ;
 toolset.flags gcc.compile.c++ USER_OPTIONS <cxxflags> ;
+toolset.flags gcc.compile.asm USER_OPTIONS <asmflags> ;
 toolset.flags gcc.compile DEFINES <define> ;
 toolset.flags gcc.compile INCLUDES <include> ;
 toolset.flags gcc.compile.c++ TEMPLATE_DEPTH <c++-template-depth> ;
@@ -647,7 +648,7 @@ rule compile.asm ( targets * : sources * : properties * )
 
 actions compile.asm
 {
-    "$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
+    "$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
 }
 
 # Class checking that we do not try to use the <runtime-link>static property