diff options
| author | Benjamin Berg <benjamin.berg@intel.com> | 2025-09-24 16:20:54 +0200 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2025-10-29 16:29:16 +0100 |
| commit | 3d66c4e14fbf4d59ca4665391d133655fa668042 (patch) | |
| tree | ce6859fde99095c2d4214b6e8e93dfdff1447d93 /tools/include/nolibc/stdlib.h | |
| parent | 2cb6cc8361da803ede847ed1ca8afeb3af6df6ff (diff) | |
tools/nolibc: add option to disable runtime
In principle, it is possible to use nolibc for only some object files in
a program. In that case, the startup code in _start and _start_c is not
going to be used. Add the NOLIBC_NO_RUNTIME compile time option to
disable it entirely and also remove anything that depends on it.
Doing this avoids warnings from modpost for UML as the _start_c code
references the main function from the .init.text section while it is not
inside .init itself.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Diffstat (limited to 'tools/include/nolibc/stdlib.h')
| -rw-r--r-- | tools/include/nolibc/stdlib.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/include/nolibc/stdlib.h b/tools/include/nolibc/stdlib.h index 5fd99a480f82..f184e108ed0a 100644 --- a/tools/include/nolibc/stdlib.h +++ b/tools/include/nolibc/stdlib.h @@ -100,6 +100,7 @@ void free(void *ptr) munmap(heap, heap->len); } +#ifndef NOLIBC_NO_RUNTIME /* getenv() tries to find the environment variable named <name> in the * environment array pointed to by global variable "environ" which must be * declared as a char **, and must be terminated by a NULL (it is recommended @@ -122,6 +123,7 @@ char *getenv(const char *name) } return NULL; } +#endif /* NOLIBC_NO_RUNTIME */ static __attribute__((unused)) void *malloc(size_t len) |