* libltdl/config/ltmain.m4sh (func_mode_link): Recognize --sysroot
option.

Signed-off-by: Paolo Bonzini <bonz...@gnu.org>
---
 libltdl/config/ltmain.m4sh |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/libltdl/config/ltmain.m4sh b/libltdl/config/ltmain.m4sh
index 897a5e8..4f373db 100644
--- a/libltdl/config/ltmain.m4sh
+++ b/libltdl/config/ltmain.m4sh
@@ -4433,7 +4433,7 @@ func_mode_link ()
       # Tru64 UNIX uses -model [arg] to determine the layout of C++
       # classes, name mangling, and exception handling.
       # Darwin uses the -arch flag to determine output architecture.
-      -model|-arch|-isysroot)
+      -model|-arch|-isysroot|--sysroot)
        func_append compiler_flags " $arg"
        func_append compile_command " $arg"
        func_append finalize_command " $arg"
@@ -4630,8 +4630,9 @@ func_mode_link ()
       # -p, -pg, --coverage, -fprofile-*  profiling flags for GCC
       # @file                GCC response files
       # -tp=*                Portland pgcc target processor selection
+      # --sysroot=*          for sysroot support
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
-      -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*)
+      -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*)
         func_quote_for_eval "$arg"
        arg="$func_quote_for_eval_result"
         func_append compile_command " $arg"
-- 
1.7.1



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