Improve feature detection in configure.

4 files changed, 47 insertions, 3 deletions

diff --git a/make/configure.pm b/make/configure.pm
index 606483e98..67e91c825 100644
--- a/make/configure.pm
+++ b/make/configure.pm
@@ -31,10 +31,29 @@ use warnings FATAL => qw(all);
 use Exporter 'import';
 use POSIX;
 use make::utilities;
-our @EXPORT = qw(promptnumeric dumphash is_dir getmodules getrevision getcompilerflags getlinkerflags getdependencies nopedantic resolve_directory yesno showhelp promptstring_s module_installed);
+our @EXPORT = qw(test_file test_header promptnumeric dumphash is_dir getmodules getrevision getcompilerflags getlinkerflags getdependencies nopedantic resolve_directory yesno showhelp promptstring_s module_installed);
 
 my $no_git = 0;
 
+sub test_file($$;$) {
+	my ($cc, $file, $args) = @_;
+	my $status = 0;
+	$args ||= '';
+	$status ||= system "$cc -o __test_$file make/test/$file $args >/dev/null 2>&1";
+	$status ||= system "./__test_$file >/dev/null 2>&1";
+	unlink  "./__test_$file";
+	return !$status;
+}
+
+sub test_header($$;$) {
+	my ($cc, $header, $args) = @_;
+	$args ||= '';
+	open(CC, "| $cc -E - $args >/dev/null 2>&1") or return 0;
+	print CC "#include <$header>";
+	close(CC);
+	return !$?;
+}
+
 sub yesno {
 	my ($flag,$prompt) = @_;
 	print "$prompt [\e[1;32m$main::config{$flag}\e[0m] -> ";
diff --git a/make/test/clock_gettime.cpp b/make/test/clock_gettime.cpp
new file mode 100644
index 000000000..91d8cd412
--- /dev/null
+++ b/make/test/clock_gettime.cpp
@@ -0,0 +1,25 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <time.h>
+
+int main() {
+	timespec time_spec;
+	clock_gettime(CLOCK_REALTIME, &time_spec);
+	return 0;
+}
diff --git a/make/check_eventfd.cpp b/make/test/eventfd.cpp
index 980d04485..980d04485 100644
--- a/make/check_eventfd.cpp
+++ b/make/test/eventfd.cpp
diff --git a/make/check_epoll.cpp b/make/test/kqueue.cpp
index 918d3907e..a20317456 100644
--- a/make/check_epoll.cpp
+++ b/make/test/kqueue.cpp
@@ -16,9 +16,9 @@
  */
 
 
-#include <sys/epoll.h>
+#include <sys/event.h>
 
 int main() {
-	int fd = epoll_create(1);
+	int fd = kqueue();
 	return (fd < 0);
 }