libtool upgrade to 2.4.6 - 15/n: -Xassembler and -Wa,* support :

http://git.savannah.gnu.org/gitweb/?p=libtool.git;a=commitdiff;h=86d71e869d998fb09bee543a2aaef7beb6d6f591
http://git.savannah.gnu.org/gitweb/?p=libtool.git;a=commitdiff;h=1b74d78401d7e09d5c31f4d479109d9b52984a32

build-scripts/ltmain.sh

@@ -3648,7 +3648,8 @@ This mode accepts the following additional options:
   -prefer-non-pic   try to build non-PIC objects only
   -shared           do not build a '.o' file suitable for static linking
   -static           only build a '.o' file suitable for static linking
-  -Wc,FLAG          pass FLAG directly to the compiler
+  -Wc,FLAG
+  -Xcompiler FLAG   pass FLAG directly to the compiler
 
 COMPILE-COMMAND is a command to be used in creating a 'standard' object file
 from the given SOURCEFILE.
@@ -3754,6 +3755,8 @@ The following components of LINK-COMMAND are treated specially:
   -weak LIBNAME     declare that the target provides the LIBNAME interface
   -Wc,FLAG
   -Xcompiler FLAG   pass linker-specific FLAG directly to the compiler
+  -Wa,FLAG
+  -Xassembler FLAG  pass linker-specific FLAG directly to the assembler
   -Wl,FLAG
   -Xlinker FLAG     pass linker-specific FLAG directly to the linker
   -XCClinker FLAG   pass link-specific FLAG to the compiler driver (CC)
@@ -6849,6 +6852,13 @@ func_mode_link ()
 	  prev=
 	  continue
 	  ;;
+	xassembler)
+	  func_append compiler_flags " -Xassembler $qarg"
+	  prev=
+	  func_append compile_command " -Xassembler $qarg"
+	  func_append finalize_command " -Xassembler $qarg"
+	  continue
+	  ;;
 	xcclinker)
 	  func_append linker_flags " $qarg"
 	  func_append compiler_flags " $qarg"
@@ -7237,6 +7247,11 @@ func_mode_link ()
 	arg=$func_stripname_result
 	;;
 
+      -Xassembler)
+        prev=xassembler
+        continue
+        ;;
+
       -Xcompiler)
 	prev=xcompiler
 	continue
@@ -7276,10 +7291,11 @@ func_mode_link ()
       # -stdlib=*            select c++ std lib with clang
       # -fsanitize=*         Clang/GCC memory and address sanitizer
       # -fuse-ld=*           Linker select flags for GCC
+      # -Wa,*                Pass flags directly to the assembler
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
       -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
-      -specs=*|-fsanitize=*|-fuse-ld=*)
+      -specs=*|-fsanitize=*|-fuse-ld=*|-Wa,*)
         func_quote_for_eval "$arg"
 	arg=$func_quote_for_eval_result
         func_append compile_command " $arg"