Signed-off-by: Julian Ospald <[email protected]> --- 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
