Merge tag 'nolibc-20251130-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc

Pull nolibc updates from Thomas Weißschuh:

 - Preparations to the use of nolibc in UML:
     - Cleanup of sparse warnings
     - Library mode without _start()
     - More consistency when disabling errno

 - Unconditional installation of all architecture support files

 - Always 64-bit wide ino_t and off_t

 - Various cleanups and bug fixes

* tag 'nolibc-20251130-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (25 commits)
  selftests/nolibc: error out on linker warnings
  selftests/nolibc: use lld to link loongarch binaries
  tools/nolibc: remove more __nolibc_enosys() fallbacks
  tools/nolibc: remove now superfluous overflow check in llseek
  tools/nolibc: use 64-bit off_t
  tools/nolibc: prefer the llseek syscall
  tools/nolibc: handle 64-bit off_t for llseek
  tools/nolibc: use 64-bit ino_t
  tools/nolibc: avoid using plain integer as NULL pointer
  tools/nolibc: add support for fchdir()
  tools/nolibc: clean up outdated comments in generic arch.h
  tools/nolibc: make the "headers" target install all supported archs
  tools/nolibc: add the more portable inttypes.h
  tools/nolibc: provide the portable sys/select.h
  tools/nolibc: add missing memchr() to string.h
  tools/nolibc: fix misleading help message regarding installation path
  tools/nolibc: add uio.h with readv and writev
  tools/nolibc: add option to disable runtime
  tools/nolibc: use __fallthrough__ rather than fallthrough
  tools/nolibc: implement %m if errno is not defined
  ...

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)