Use AC_FUNC_ALLOC

The preferred all-inclusive method for finding alloca().

Reported-by: Richard Palo <richard@netbsd.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89762
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/libobj/alloca.c b/libobj/alloca.c
new file mode 100644
index 00000000..883e1e9f
--- /dev/null
+++ b/libobj/alloca.c
@@ -0,0 +1,4 @@
+void *alloca(size_t sz)
+{
+	return NULL;
+}