Check if we HAVE_ENDIAN_H

BSDs will have <sys/endian.h>, Linux just <endian.h>

configure.ac

@@ -400,7 +400,8 @@ AC_HEADER_ASSERT
 AC_CHECK_HEADERS([ \
 	errno.h fcntl.h stdlib.h \
 	inttypes.h string.h strings.h \
-	sys/time.h unistd.h sys/mman.h
+	sys/time.h unistd.h sys/mman.h \
+	sys/endian.h endian.h
 ])
 
 dnl Checks for typedefs, structures, and compiler characteristics.

src/libopensc/reader-tr03119.c

@@ -40,8 +40,13 @@
 #ifndef _BSD_SOURCE
 #define _BSD_SOURCE             /* See feature_test_macros(7) */
 #endif
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
+#ifdef HAVE_ENDIAN_H
 #include <endian.h>
 #endif
+#endif
 
 int get_pace_capabilities(u8 *bitmap)
 {