ltmain.in: Pass through all warning flags to the linker.

When link-time optimization (LTO) is used, some warnings are reported
while linking, and the flags must be passed to the linker to enable or
disable them.

-W* also catches -Wl,* and -Wa,*, but the former is already accounted
for in an earlier switch case, and the latter is already passed through.

* build-aux/ltmain.in: Pass through all warning flags to the linker.

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index 294ed43c31e4018608c959c3bbdac320e18c466f..0f2c81f8b6192da60a56d89bf8ab5e8da2076b8d 100644 (file)
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -5664,7 +5664,7 @@ func_mode_link ()
       # --unwindlib=*        select unwinder library with clang
       # -f{file|debug|macro|profile}-prefix-map=* needed for lto linking
       # -Wa,*                Pass flags directly to the assembler
-      # -Werror, -Werror=*   Report (specified) warnings as errors
+      # -W*                  Warnings, needed for lto
       -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=*|--target=*| \
       -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-no-canonical-prefixes| \
@@ -5672,7 +5672,7 @@ func_mode_link ()
       -specs=*|-fsanitize=*|-fno-sanitize*|-shared-libsan|-static-libsan| \
       -ffile-prefix-map=*|-fdebug-prefix-map=*|-fmacro-prefix-map=*|-fprofile-prefix-map=*| \
       -fdiagnostics-color*|-frecord-gcc-switches| \
-      -fuse-ld=*|-static-*|-fcilkplus|-Wa,*|-Werror|-Werror=*)
+      -fuse-ld=*|-static-*|-fcilkplus|-W*)
         func_quote_arg pretty "$arg"
        arg=$func_quote_arg_result
         func_append compile_command " $arg"