Clean up header checks
* configure.ac: Reformat AC_CHECK_HEADERS to keep it sorted and
easily updated, and reduce merging errors in the future.
* system.c: Convert all non-standard #ifdef checks for specific
headers to regular #ifdef HAVE_*_H checks.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
diff --git a/configure.ac b/configure.ac
index ffbfeb4..3b1db7c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -209,7 +209,39 @@
fi
AC_CHECK_FUNCS(sigaction strerror strsignal pread sys_siglist _sys_siglist getdents mctl prctl sendmsg inet_ntop if_indextoname)
-AC_CHECK_HEADERS([sys/reg.h sys/filio.h sys/acl.h sys/asynch.h sys/door.h stropts.h sys/conf.h sys/stream.h sys/tihdr.h sys/tiuser.h sys/sysconfig.h ioctls.h sys/ioctl.h sys/ptrace.h termio.h linux/ptrace.h asm/reg.h sys/uio.h sys/aio.h poll.h sys/poll.h sys/vfs.h asm/sysmips.h linux/utsname.h sys/nscsys.h mqueue.h sys/epoll.h libaio.h inttypes.h], [], [])
+AC_CHECK_HEADERS([ \
+ inttypes.h \
+ ioctls.h \
+ libaio.h \
+ mqueue.h \
+ poll.h \
+ stropts.h \
+ termio.h \
+ sys/acl.h \
+ sys/aio.h \
+ sys/asynch.h \
+ sys/conf.h \
+ sys/door.h \
+ sys/epoll.h \
+ sys/filio.h \
+ sys/ioctl.h \
+ sys/nscsys.h \
+ sys/poll.h \
+ sys/ptrace.h \
+ sys/reg.h \
+ sys/stream.h \
+ sys/sysconfig.h \
+ sys/tihdr.h \
+ sys/tiuser.h \
+ sys/uio.h \
+ sys/vfs.h \
+ asm/cachectl.h \
+ asm/reg.h \
+ asm/sysmips.h \
+ linux/capability.h \
+ linux/ptrace.h \
+ linux/utsname.h \
+], [], [])
AC_CHECK_HEADERS([linux/icmp.h linux/in6.h linux/netlink.h linux/if_packet.h],
[], [], [#include <stddef.h>
#include <linux/socket.h>])