build: provide stub implementation for memfd_create
When libc misses memfd_create(), provide a stub implementation to go
through the syscall() route. Syscall numbers are provided for platforms
currently supported by i-g-t only.
v2: add support to autotools
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Antonio Argenziano <antonio.argenziano@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
diff --git a/meson.build b/meson.build
index 2211882..63ac629 100644
--- a/meson.build
+++ b/meson.build
@@ -196,6 +196,9 @@
config.set('HAVE_STRUCT_SYSINFO_TOTALRAM', 1)
endif
+have = cc.has_function('memfd_create', prefix : '''#include <sys/mman.h>''', args : '-D_GNU_SOURCE')
+config.set10('HAVE_MEMFD_CREATE', have)
+
add_project_arguments('-D_GNU_SOURCE', language : 'c')
add_project_arguments('-include', 'config.h', language : 'c')