commit - c9c44c657187b6b312a863f01afa6ea5956cb84d
commit + 5d2f4b1611d724a3dbf0d4b8629119cf1ad11e87
blob - 43153f498e79f69f015c0cb7e58c4c74ca1dd59e
blob + 83332f998b3adf98066ee340ece5f5cb0088feb5
--- configure
+++ configure
@@ -242,6 +242,22 @@ fi
 
 if ! runtest wait_any WAIT_ANY; then
 	CFLAGS="${CFLAGS} -DWAIT_ANY=-1"
+fi
+
+HAVE_ENDIAN_H=0
+HAVE_SYS_ENDIAN_H=0
+HAVE_MACHINE_ENDIAN=0
+
+runtest endian_h	ENDIAN_H	|| \
+runtest sys_endian_h	SYS_ENDIAN_H	|| \
+runtest machine_endian	MACHINE_ENDIAN	|| true
+
+if [ ${HAVE_ENDIAN_H} -eq 0 -a \
+     ${HAVE_SYS_ENDIAN_H} -eq 0 -a \
+     ${HAVE_MACHINE_ENDIAN} -eq 0 ]; then
+	echo "FATAL: no endian header found" 1>&2
+	echo "FATAL: no endian header found" 1>&3
+	exit 1
 fi
 
 runtest err		ERR		|| true
@@ -349,6 +365,20 @@ cat <<__HEREDOC__
 
 __HEREDOC__
 
+if [ ${HAVE_ENDIAN_H} -eq 1 ]; then
+	echo "#include <endian.h>"
+elif [ ${HAVE_SYS_ENDIAN_H} -eq 1 ]; then
+	echo "#include <sys/endian.h>"
+elif [ ${HAVE_MACHINE_ENDIAN} -eq 1 ]; then
+	cat <<__HEREDOC__
+#include <machine/endian.h>
+#include <libkern/OSByteOrder.h>
+#define htobe16(x) OSSwapHostToBigInt16(x)
+#define htobe32(x) OSSwapHostToBigInt32(x)
+#define htobe64(x) OSSwapHostToBigInt64(x)
+__HEREDOC__
+fi
+
 [ ${HAVE_EXPLICIT_BZERO} -eq 0 -o \
   ${HAVE_FREEZERO} -eq 0 -o \
   ${HAVE_REALLOCARRAY} -eq 0 -o \
blob - /dev/null
blob + 3bbff60d30f536b3269a7aa65bf0283efb89196a (mode 644)
--- /dev/null
+++ have/endian_h.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2023 Omar Polo <op@omarpolo.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+int
+main(void)
+{
+	uint16_t	x;
+
+	x = 42;
+	return (htobe16(x));
+}
blob - /dev/null
blob + 2413b5896b13f658f73c6c73ab5100e41ec5e769 (mode 644)
--- /dev/null
+++ have/machine_endian.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2023 Omar Polo <op@omarpolo.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <machine/endian.h>
+#include <libkern/OSByteOrder.h>
+#include <stdint.h>
+
+int
+main(void)
+{
+	uint16_t	x;
+
+	x = 42;
+	return (OSSwapHostToBigInt16(x));
+}
blob - /dev/null
blob + bba56c9ed2ea334c99fe1d986c895aae65f18011 (mode 644)
--- /dev/null
+++ have/sys_endian_h.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2023 Omar Polo <op@omarpolo.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/endian.h>
+#include <stdint.h>
+
+int
+main(void)
+{
+	uint16_t	x;
+
+	x = 42;
+	return (htobe16(x));
+}