commit 9d348d00d9eda2aede0ea9052bcc34cd070d3b5a
from: Alexander Barton <alex@barton.de>
date: Fri Nov 25 20:56:33 2011 UTC

Not only check for poll(), make sure poll.h exists as well

This fixes building ngIRCd on Debian GNU/Linux 1.3 "Bo" :-)

commit - 9e48f3f8f8c312ee20caef70cfb377a0d89260bb
commit + 9d348d00d9eda2aede0ea9052bcc34cd070d3b5a
blob - 92434ec7d044945f9a25914804cd0df289acade1
blob + f3dbd7275cd4b437d0e98e59056db607bfa92d34
--- configure.in
+++ configure.in
@@ -252,13 +252,22 @@ AC_ARG_WITH(poll,
 				CPPFLAGS="-I$withval/include $CPPFLAGS"
 				LDFLAGS="-L$withval/lib $LDFLAGS"
 			fi
-			AC_CHECK_FUNCS(poll, x_io_backend=poll\(\),
-				AC_MSG_ERROR([Can't enable poll IO support!])
+			AC_CHECK_FUNCS(poll,
+				AC_CHECK_HEADERS(poll.h,
+					x_io_backend=poll\(\),
+						AC_MSG_ERROR(
+						[Can't enable poll IO support!])
+					,
+					AC_MSG_ERROR(
+						[Can't enable poll IO support!])
+				)
 			)
 		fi
 	],
 	[
-		AC_CHECK_FUNCS(poll, x_io_backend=poll\(\))
+		AC_CHECK_FUNCS(poll,
+			AC_CHECK_HEADERS(poll.h, x_io_backend=poll\(\))
+		)
 	]
 )