> Yes, that appears to solve the curses problem.

fine. Patch is commited.

 
> There is still the problem that readline is not built.  You have to run
> bmake in the readline directory and then restart bmake in the parent.
> Also in the mysql5-server package readline is not even configured so
> there is no Makefile at all.

The problem seems to be in the string.h from QNX. This program fails to compile because of duplicate definitions in 
string.h. IMHO it should not be possible to get the same function prototypes twice from the same include file. Perhaps 
you can find the root cause of the problem. A work around *may* be to include string.h in front of stdio.h another way 
may be to define something explicitly to avoid the duplicated prototypes.

| 		#include "stdio.h"
| 		#include "readline/readline.h"
| 
| int
| main ()
| {
| 
| 		HIST_ENTRY entry;
| 
|   ;
|   return 0;
| }


Here is the problem in my config.log:

configure:40170: checking HIST_ENTRY is declared in readline/readline.h
configure:40201: c++ -c  -DDBUG_OFF -O2 -DUSE_OLD_FUNCTIONS -I/usr/pkg/include -I/usr/include   -fno-implicit-templates 
-fno-exceptions -fno-rtti -Dunix -I/usr/pkg/include -I/usr/include conftest.cpp >&5
In file included from /usr/src/HEAD/pkgsrc/databases/mysql5-client/work/.buildlink/include/readline/chardefs.h:39,
                 from /usr/src/HEAD/pkgsrc/databases/mysql5-client/work/.buildlink/include/readline/keymaps.h:36,
                 from /usr/src/HEAD/pkgsrc/databases/mysql5-client/work/.buildlink/include/readline/readline.h:38,
                 from conftest.cpp:280:
/usr/qnx632/target/qnx6/usr/include/string.h: In function `void* 
   std::memchr(void*, int, unsigned int)':
/usr/qnx632/target/qnx6/usr/include/string.h:138: error: declaration of C 
   function `void* std::memchr(void*, int, unsigned int)' conflicts with
/usr/qnx632/target/qnx6/usr/include/string.h:62: error: previous declaration `
   const void* std::memchr(const void*, int, unsigned int)' here
/usr/qnx632/target/qnx6/usr/include/string.h: In function `void* 
   std::memchr(void*, int, unsigned int)':
/usr/qnx632/target/qnx6/usr/include/string.h:140: error: invalid conversion 
   from `const void*' to `void*'
/usr/qnx632/target/qnx6/usr/include/string.h: In function `char* 
   std::strchr(char*, int)':
/usr/qnx632/target/qnx6/usr/include/string.h:143: error: declaration of C 
   function `char* std::strchr(char*, int)' conflicts with
/usr/qnx632/target/qnx6/usr/include/string.h:63: error: previous declaration `
   const char* std::strchr(const char*, int)' here
/usr/qnx632/target/qnx6/usr/include/string.h: In function `char* 
   std::strchr(char*, int)':
/usr/qnx632/target/qnx6/usr/include/string.h:145: error: invalid conversion 
   from `const char*' to `char*'
/usr/qnx632/target/qnx6/usr/include/string.h: In function `char* 
   std::strpbrk(char*, const char*)':
/usr/qnx632/target/qnx6/usr/include/string.h:148: error: declaration of C 
   function `char* std::strpbrk(char*, const char*)' conflicts with
/usr/qnx632/target/qnx6/usr/include/string.h:64: error: previous declaration `
   const char* std::strpbrk(const char*, const char*)' here
/usr/qnx632/target/qnx6/usr/include/string.h: In function `char* 
   std::strpbrk(char*, const char*)':
/usr/qnx632/target/qnx6/usr/include/string.h:150: error: invalid conversion 
   from `const char*' to `char*'
/usr/qnx632/target/qnx6/usr/include/string.h: In function `char* 
   std::strrchr(char*, int)':
/usr/qnx632/target/qnx6/usr/include/string.h:153: error: declaration of C 
   function `char* std::strrchr(char*, int)' conflicts with
/usr/qnx632/target/qnx6/usr/include/string.h:65: error: previous declaration `
   const char* std::strrchr(const char*, int)' here
/usr/qnx632/target/qnx6/usr/include/string.h: In function `char* 
   std::strrchr(char*, int)':
/usr/qnx632/target/qnx6/usr/include/string.h:155: error: invalid conversion 
...