Signed-off-by: Julian Ospald <hasufell(a)posteo.de>
---
configure.ac | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index e5503f1..a69e2dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -331,9 +331,20 @@ else
fi
AC_SUBST([argp_LDADD])
-dnl Check if we have <linux/bpf.h> for EM_BPF disassembly.
-AC_CHECK_HEADERS(linux/bpf.h)
-AM_CONDITIONAL(HAVE_LINUX_BPF_H, [test "x$ac_cv_header_linux_bpf_h" = "xyes"])
+dnl Check if we have <linux/bpf.h> for EM_BPF disassembly and it has the required defines
+AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <linux/bpf.h>],
+ [int foo=BPF_PSEUDO_MAP_FD; return 0;]
+ )],
+ [have_bpf="true"],
+ [have_bpf="false"]
+)
+
+if test "$have_bpf" = "true" ; then
+ AC_DEFINE([HAVE_LINUX_BPF_H], [1], [if we have <linux/bpf.h> for EM_BPF disassembly])
+fi
+AM_CONDITIONAL(HAVE_LINUX_BPF_H, [test "$have_bpf" = "true"])
dnl The directories with content.
--
2.9.3
