These macros are to assist on probing kernel features. The main reason for using them is to have the default includes right and the AM_CONDITIONALs that can be used to selectively enable (unit tests) sources. Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx> --- m4/.gitignore | 1 + m4/sctp.m4 | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) create mode 100644 m4/sctp.m4 diff --git a/m4/.gitignore b/m4/.gitignore index 0f4126cd671839a82779a5c522f95ec373eb9a00..1ff72df33a7f7e709bb752a23623266d11c92282 100644 --- a/m4/.gitignore +++ b/m4/.gitignore @@ -1 +1,2 @@ *.m4 +!sctp.m4 diff --git a/m4/sctp.m4 b/m4/sctp.m4 new file mode 100644 index 0000000000000000000000000000000000000000..6593517502b565ee1e02f143c8ad2efdcf7e587d --- /dev/null +++ b/m4/sctp.m4 @@ -0,0 +1,63 @@ +# Handy references: +# https://www.gnu.org/software/autoconf/manual/autoconf.html#Generic-Structures +# AC_CHECK_MEMBER (aggregate.member, [action-if-found], [action-if-not-found], [includes = 'AC_INCLUDES_DEFAULT']) +# https://www.gnu.org/software/autoconf/manual/autoconf.html#Generic-Types +# AC_CHECK_TYPE (type, [action-if-found], [action-if-not-found], [includes = 'AC_INCLUDES_DEFAULT']) + +# Macros to assist on probing kernel features +# Probes if a type is defined +AC_DEFUN([LKSCTP_CHECK_TYPE], [{ +AC_CHECK_TYPE([$1], + AC_DEFINE([$2], 1, + [Define if $1 is present.]) + AM_CONDITIONAL([$2], [true]), + AM_CONDITIONAL([$2], [false]), + [AC_INCLUDES_DEFAULT +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_LINUX_SCTP_H +# include <linux/sctp.h> +#endif +])}]) + +# Probes if a struct has a given member +AC_DEFUN([LKSCTP_CHECK_MEMBER], [{ +AC_CHECK_MEMBER([$1], + AC_DEFINE([$2], 1, + [Define if $1 is present.]) + AM_CONDITIONAL([$2], [true]), + AM_CONDITIONAL([$2], [false]), + [AC_INCLUDES_DEFAULT +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_LINUX_SCTP_H +# include <linux/sctp.h> +#endif +])}]) + +# Probes if a declaration is present +AC_DEFUN([LKSCTP_CHECK_DECL], [{ +AC_CHECK_DECL([$1], + AC_DEFINE([$2], 1, + [Define if $1 is present.]) + AM_CONDITIONAL([$2], [true]), + AM_CONDITIONAL([$2], [false]), + [AC_INCLUDES_DEFAULT +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_LINUX_SCTP_H +# include <linux/sctp.h> +#endif +])}]) -- 2.14.3 -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
