From ec15841963ca3aab3bc88fb0932c014337284bfc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Wed, 10 Oct 2018 10:47:21 +0300
Subject: [PATCH 2/2] Prefer response files over linker scripts for mingw tools

The GCC/binutils tools support response files just fine, while
lld (impersonating GNU ld) only supports response files, not
linker scripts. Using a linker script as input just to pass a
list of files is overkill for cases when a response file is enough.
---
 build-aux/ltmain.in | 28 ++++++++++++++--------------
 m4/libtool.m4       |  2 ++
 2 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index e2fb263..db5d590 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -7932,20 +7932,7 @@ EOF
 	  last_robj=
 	  k=1
 
-	  if test -n "$save_libobjs" && test : != "$skipped_export" && test yes = "$with_gnu_ld"; then
-	    output=$output_objdir/$output_la.lnkscript
-	    func_verbose "creating GNU ld script: $output"
-	    echo 'INPUT (' > $output
-	    for obj in $save_libobjs
-	    do
-	      func_to_tool_file "$obj"
-	      $ECHO "$func_to_tool_file_result" >> $output
-	    done
-	    echo ')' >> $output
-	    func_append delfiles " $output"
-	    func_to_tool_file "$output"
-	    output=$func_to_tool_file_result
-	  elif test -n "$save_libobjs" && test : != "$skipped_export" && test -n "$file_list_spec"; then
+	  if test -n "$save_libobjs" && test : != "$skipped_export" && test -n "$file_list_spec"; then
 	    output=$output_objdir/$output_la.lnk
 	    func_verbose "creating linker input file list: $output"
 	    : > $output
@@ -7964,6 +7951,19 @@ EOF
 	    func_append delfiles " $output"
 	    func_to_tool_file "$output"
 	    output=$firstobj\"$file_list_spec$func_to_tool_file_result\"
+	  elif test -n "$save_libobjs" && test : != "$skipped_export" && test yes = "$with_gnu_ld"; then
+	    output=$output_objdir/$output_la.lnkscript
+	    func_verbose "creating GNU ld script: $output"
+	    echo 'INPUT (' > $output
+	    for obj in $save_libobjs
+	    do
+	      func_to_tool_file "$obj"
+	      $ECHO "$func_to_tool_file_result" >> $output
+	    done
+	    echo ')' >> $output
+	    func_append delfiles " $output"
+	    func_to_tool_file "$output"
+	    output=$func_to_tool_file_result
 	  else
 	    if test -n "$save_libobjs"; then
 	      func_verbose "creating reloadable object files..."
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index d9322d0..9046a84 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -5130,6 +5130,7 @@ _LT_EOF
       _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
       _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
       _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
+      _LT_TAGVAR(file_list_spec, $1)='@'
 
       if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
         _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
@@ -6706,6 +6707,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
 	  _LT_TAGVAR(always_export_symbols, $1)=no
 	  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+	  _LT_TAGVAR(file_list_spec, $1)='@'
 
 	  if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
 	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
-- 
2.7.4