Use autoconf to look for the right endian.h header.

Signed-off-by: Alexander Larsson <[email protected]>

configure.ac

@@ -45,7 +45,7 @@ PKG_CHECK_MODULES(LCFS_DEP_CRYPTO, libcrypto,[
 ])
 AM_CONDITIONAL(USE_OPENSSL, test $with_openssl != no)
 
-AC_CHECK_HEADERS([sys/capability.h])
+AC_CHECK_HEADERS([sys/capability.h endian.h sys/endian.h machine/endian.h])
 
 AC_DEFUN([CC_CHECK_FLAG_APPEND], [
   AC_CACHE_CHECK([if $CC supports flag $3 in envvar $2],

libcomposefs/lcfs-fsverity.c

@@ -24,7 +24,6 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <stdbool.h>
-#include <endian.h>
 #include <assert.h>
 #include <string.h>
 #include <sys/param.h>
@@ -298,6 +297,7 @@ static void sha256_sum_close(Sha256sum *sha256, uint8_t *digest)
 
 #endif /* SHA256 fallback implementation */
 
+#include "lcfs-internal.h" /* for endian.h */
 #include "lcfs-fsverity.h"
 
 struct fsverity_descriptor {

libcomposefs/lcfs-internal.h

@@ -17,7 +17,17 @@
 #ifndef _LCFS_INTERNAL_H
 #define _LCFS_INTERNAL_H
 
+#ifdef HAVE_MACHINE_ENDIAN_H
+#include <machine/endian.h>
+#endif
+
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
+
+#ifdef HAVE_ENDIAN_H
 #include <endian.h>
+#endif
 
 #include "lcfs-writer.h"
 #include "lcfs-fsverity.h"