Description: gnucobol3 fails to cross build from source, because it abuses
            AC_CHECK_FILE. The macro is meant to check for files on the host system,
            but it is used to check for files inside the build tree.
Author: Helmut Grohne <helmut@subdivi.de>
--- gnucobol4-4.0~early~20200606.orig/configure.ac
+++ gnucobol4-4.0~early~20200606/configure.ac
@@ -590,7 +590,7 @@
 	AC_MSG_NOTICE([Checks for local cJSON ...])
 	curr_libs="$LIBS"; curr_cppflags="$CPPFLAGS"
 	with_cjson_local=no
-	AC_CHECK_FILE([./libcob/cJSON.c],
+	AS_IF([test -e ./libcob/cJSON.c],
 	  [AC_MSG_CHECKING([if linking of ./libcob/cJSON.c works])
 	   CPPFLAGS="$curr_cppflags -I./libcob"
 	   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "cJSON.c"]],
@@ -601,7 +601,7 @@
 	   )]
 	)
 	if test "$with_cjson_local" = "no"; then
-	  AC_CHECK_FILE([$srcdir/libcob/cJSON.c],
+	  AS_IF([test -e "$srcdir/libcob/cJSON.c"],
 	    [AC_MSG_CHECKING([if linking of $srcdir/libcob/cJSON.c works])
 	     CPPFLAGS="$curr_cppflags -I$srcdir/libcob"
 	     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "cJSON.c"]],