other OS/390 peculiarities

[Werner LEMBERG]

[The configure script has been created with autoconf 2.53.]

Here another strange thing with OS/390's C++ compiler:

  configure:2121: checking whether c++ accepts -g
  configure:2145: c++ -c -g  conftest.cc >&5
  FSUM3010 Specify a file with the correct suffix
           (.cpp, .hh, .i, .c, .i, .s, .o, .x, .p, .I, or .a),
           or a corresponding data set name, instead of conftest.cc. 
  configure:2148: $? = 1

The C++ compiler on this platform needs the option `-+' to accept
files ending with `.cc'.

The test for checking header files fails like this:

  configure:3292: checking for stdint.h
  configure:3305: cc -c -g -D_ALL_SOURCE  conftest.c >&5
  WARNING CCN3296 ./conftest.c:3339  #include file <stdint.h> not found.
  FSUM3065 The COMPILE step ended with return code 4.
  configure:3308: $? = 0

A missing <sys/dir.h> is properly recognized:

  configure:3428: WARNING: sys/dir.h: accepted by the compiler,
                  rejected by the preprocessor!
  configure:3430: WARNING: sys/dir.h: proceeding with the
                  preprocessor's result  


    Werner