`add_sysrooted_hdrs_prefix` is only used in `find_fortran_preinclude_file`
when NATIVE_SYSTEM_HEADER_DIR is defined, while itself is defined
unconditionally. This generates the following warning when compiling GCC
with NATIVE_SYSTEM_HEADER_DIR not defined (e.g. on MinGW-w64):
../../gcc-16.1.0/gcc/gcc.cc:3231:1: warning: 'void
add_sysrooted_hdrs_prefix(path_prefix*, const char*, const char*, int, int,
int)' defined but not used [-Wunused-function]
3231 | add_sysrooted_hdrs_prefix (struct path_prefix *pprefix, const char
*prefix,
| ^~~~~~~~~~~~~~~~~~
gcc/ChangeLog:
PR driver/126506
* gcc.cc (add_sysrooted_hdrs_prefix): Guard with #ifdef
NATIVE_SYSTEM_HEADER_DIR.
Signed-off-by: Zhongteng Gui <[email protected]>
---
gcc/gcc.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index 43b0158ee02..bef80b239fc 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -3225,6 +3225,7 @@ add_sysrooted_prefix (struct path_prefix *pprefix, const
char *prefix,
require_machine_suffix, os_multilib);
}
+#ifdef NATIVE_SYSTEM_HEADER_DIR
/* Same as add_prefix, but prepending target_sysroot_hdrs_suffix to prefix. */
static void
@@ -3261,6 +3262,7 @@ add_sysrooted_hdrs_prefix (struct path_prefix *pprefix,
const char *prefix,
add_prefix (pprefix, prefix, component, priority,
require_machine_suffix, os_multilib);
}
+#endif
/* Execute the command specified by the arguments on the current line of spec.
--
2.55.0.windows.3
