From 689230b674188163fe56b3aecd7d01f79ca518e6 Mon Sep 17 00:00:00 2001 From: Rodrigo Campos Date: Sun, 18 Feb 2024 16:51:03 -0300 Subject: [PATCH] tools/nolibc/string: export strlen() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit As with commit 8d304a374023, "tools/nolibc/string: export memset() and memmove()", gcc -Os without -ffreestanding may fail to compile with: cc -fno-asynchronous-unwind-tables -fno-ident -s -Os -nostdlib -lgcc -static -o test test.c /usr/bin/ld: /tmp/cccIasKL.o: in function `main': test.c:(.text.startup+0x1e): undefined reference to `strlen' collect2: error: ld returned 1 exit status As on the aforementioned commit, this patch adds a section to export this function so compilation works on those cases too. Signed-off-by: Rodrigo Campos Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/string.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/include/nolibc/string.h b/tools/include/nolibc/string.h index a01c69dd495f5..ed15c22b1b2ae 100644 --- a/tools/include/nolibc/string.h +++ b/tools/include/nolibc/string.h @@ -123,7 +123,7 @@ char *strcpy(char *dst, const char *src) * thus itself, hence the asm() statement below that's meant to disable this * confusing practice. */ -static __attribute__((unused)) +__attribute__((weak,unused,section(".text.nolibc_strlen"))) size_t strlen(const char *str) { size_t len; -- 2.30.2