utils-std

commit: 5d644124be85b7449c992cce7f3ea67eae5ade15
parent dd9801d7c154beeca3be1f265ed4fae1192215fc
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Mon,  8 Jul 2024 16:34:30 +0200

configure: Add test for getentropy

Diffstat:
M
configure
5
+++++
A
configure.d/getentropy.c
26
++++++++++++++++++++++++++

2 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
@@ -231,6 +231,11 @@ if check_conftest configure.d/posix_2024.h; then
 	CFLAGS="${CFLAGS} -DHAS_POSIX_2024"
 fi
 
+if ! check_conftest configure.d/getentropy.c; then
+	echo 'Disabling cmd/mktemp'
+	target_filter="${target_filter} -e cmd/mktemp."
+fi
+
 echo
 
 ## Configuration write
diff --git a/configure.d/getentropy.c b/configure.d/getentropy.c
@@ -0,0 +1,26 @@
+// utils-std: Collection of commonly available Unix tools
+// SPDX-FileCopyrightText: 2017 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
+// SPDX-License-Identifier: MPL-2.0
+
+#define _POSIX_C_SOURCE 202405L
+
+#ifndef HAS_POSIX_2024
+#define _DEFAULT_SOURCE // getentropy
+#endif
+
+#include <unistd.h> // getentropy
+
+int
+main(int argc, char *argv[])
+{
+	// Silence unused warnings
+	(void)argc;
+	(void)argv;
+
+#define BUFLEN 42
+	size_t buflen = BUFLEN;
+	char buf[BUFLEN] = "";
+	int res = getentropy(buf, buflen);
+
+	return res;
+}