[PATCH 1/3] ltmain.in: Handle prefix-map compiler options correctly

[Richard Purdie]

If lto is enabled, we need the prefix-map variables to be passed to the linker
to correctly link the objects using correctly mapped paths.

Add these to the list of options libtool passes through.

* build-aux/ltmain.in: Handle prefix-map compiler options
---
 build-aux/ltmain.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index d5157a8d..34784c8c 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -7,7 +7,6 @@
 # Copyright (C) 1996-2019, 2021-2024 Free Software Foundation, Inc.
 # This is free software; see the source for copying conditions.  There is NO
 # warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
 # GNU Libtool is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
@@ -5413,12 +5412,14 @@ func_mode_link ()
       # -shared-libsan       Link with shared sanitizer runtimes (Clang)
       # -static-libsan       Link with static sanitizer runtimes (Clang)
       # -fuse-ld=*           Linker select flags for GCC
+      # -f{file|debug|macro}-prefix-map* needed for lto linking
       # -Wa,*                Pass flags directly to the assembler
       # -Werror, -Werror=*   Report (specified) warnings as errors
       -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=*|-fno-sanitize*|-shared-libsan|-static-libsan| \
+      -ffile-prefix-map*|-fdebug-prefix-map*|-fmacro-prefix-map*| \
       -fdiagnostics-color*|-frecord-gcc-switches| \
       -fuse-ld=*|-Wa,*|-Werror|-Werror=*)
         func_quote_arg pretty "$arg"
-- 
2.39.2