MDEV-27142 - postfix

Fix build failure in comp_err, if git is configured with default,
platform-specific EOL.

The error happens because comp_err is not prepared to handle extraneous
CR characters from errmgs-utf8.txt. Use fopen in text mode to fix.

extra/comp_err.c

@@ -494,7 +494,7 @@ static uint parse_input_file(const char *file_name, struct errors **top_error,
   section_start= er_offset;
   section_count= 0;
 
-  if (!(file= my_fopen(file_name, O_RDONLY | O_SHARE, MYF(MY_WME))))
+  if (!(file= my_fopen(file_name, O_RDONLY | O_TEXT | O_SHARE, MYF(MY_WME))))
     DBUG_RETURN(0);
 
   while ((str= fgets(buff, sizeof(buff), file)))

include/my_global.h

@@ -598,6 +598,9 @@ typedef SOCKET_SIZE_TYPE size_socket;
 #else
 #define HAVE_SOCK_CLOEXEC
 #endif
+#ifndef O_TEXT
+#define O_TEXT 0
+#endif
 
 /* additional file share flags for win32 */
 #ifdef _WIN32

mysys/my_fopen.c

@@ -291,6 +291,8 @@ static void make_ftype(register char * to, register int flag)
 
   if (flag & FILE_BINARY)    
     *to++='b';
+  else if (flag & O_TEXT)
+    *to++= 't';
 
   if (O_CLOEXEC)
     *to++= 'e';