Crash-utility implemented its own strlcpy(), but for now the latest glibc has added the strlcpy function to POSIX version(which is derived from OpenBSD). Eventually this caused the follow compilation error: # make -j8 lzo ... gcc -c -g -DX86_64 -DLZO -DGDB_10_2 -g -O2 kernel.c -I./gdb-10.2/bfd -I./gdb-10.2/include In file included from global_data.c:18: defs.h:5556:8: error: conflicting types for ‘strlcpy’; have ‘size_t(char *, char *, size_t)’ {aka ‘long unsigned int(char *, char *, long unsigned int)’} 5556 | size_t strlcpy(char *, char *, size_t); | ^~~~~~~ In file included from memory.c:19: defs.h:5556:8: error: conflicting types for ‘strlcpy’; have ‘size_t(char *, char *, size_t)’ {aka ‘long unsigned int(char *, char *, long unsigned int)’} 5556 | size_t strlcpy(char *, char *, size_t); | ^~~~~~~ ... Related glibc commits: [1] 454a20c8756c ("Implement strlcpy and strlcat [BZ #178]") [2] d2fda60e7c40 ("manual: Manual update for strlcat, strlcpy, wcslcat, wclscpy") [3] 388ae538ddcb ("hurd: Add strlcpy, strlcat, wcslcpy, wcslcat to libc.abilist") To fix the current issues, let's declare the strlcpy() as a weak function, and keep the same parameter types with the latest glibc function. Signed-off-by: Lianbo Jiang <lijiang(a)redhat.com&gt; --- defs.h | 2 +- tools.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/defs.h b/defs.h index 8f7d1fa0aba6..26afe232cc3e 100644 --- a/defs.h +++ b/defs.h @@ -5553,7 +5553,7 @@ uint32_t swap32(uint32_t, int); uint64_t swap64(uint64_t, int); ulong *get_cpumask_buf(void); int make_cpumask(char *, ulong *, int, int *); -size_t strlcpy(char *, char *, size_t); +size_t strlcpy(char *, const char *, size_t) __attribute__ ((__weak__)); struct rb_node *rb_first(struct rb_root *); struct rb_node *rb_parent(struct rb_node *, struct rb_node *); struct rb_node *rb_right(struct rb_node *, struct rb_node *); diff --git a/tools.c b/tools.c index 392a79707e61..0f2db108838a 100644 --- a/tools.c +++ b/tools.c @@ -6795,7 +6795,7 @@ make_cpumask_error: * always be NULL-terminated. */ size_t -strlcpy(char *dest, char *src, size_t size) +strlcpy(char *dest, const char *src, size_t size) { size_t ret = strlen(src); -- 2.37.1