4 files changed, 36 insertions, 0 deletions
diff --git a/build/has/dprintf.c b/build/has/dprintf.c
new file mode 100644
index 0000000..c206fa3
--- /dev/null
+++ b/build/has/dprintf.c
@@ -0,0 +1,8 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+#include <stdio.h>
+
+int main(void) {
+	return dprintf(1, "%s\n", "Hello world!");
+}
diff --git a/build/has/pragma-nounroll.c b/build/has/pragma-nounroll.c
new file mode 100644
index 0000000..2bdae14
--- /dev/null
+++ b/build/has/pragma-nounroll.c
@@ -0,0 +1,10 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+/// -Werror
+
+int main(void) {
+#pragma nounroll
+	for (int i = 0; i < 100; ++i);
+	return 0;
+}
diff --git a/build/has/sched-getaffinity.c b/build/has/sched-getaffinity.c
new file mode 100644
index 0000000..6f8fd98
--- /dev/null
+++ b/build/has/sched-getaffinity.c
@@ -0,0 +1,9 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+#include <sched.h>
+
+int main(void) {
+	cpu_set_t set;
+	return sched_getaffinity(0, sizeof(set), &set);
+}
diff --git a/build/has/tcsetwinsize.c b/build/has/tcsetwinsize.c
new file mode 100644
index 0000000..6717415
--- /dev/null
+++ b/build/has/tcsetwinsize.c
@@ -0,0 +1,9 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+#include <termios.h>
+
+int main(void) {
+	const struct winsize ws = {0};
+	return tcsetwinsize(0, &ws);
+}