configuration

[D.G.Somerton]

Hello,

  I am 'trying' to configure the RTEMS on cygwin. This is failing. see
previous posts.

  Someone suggested that VC environment variables may clashing.
  This cannot be, as VC uses LIB, INCLUDE, MSVCDIR, MSDEVDIR
  info gcc: Invoking: Environment Variables:
    LIBRARY_PATH
    C_INCLUDE_PATH

  Someone suggested linking cc to gcc.
  This is no good, as gcc is /bin/../lib/gcc-lib/i686-pc-cygwin/2.95.2
  The cross compiler is /tool/bin/m68k-rtems-gcc.exe
  I have linked cc to the cross compiler.
  Compiling a test program works. i.e. cc -v -S f.c produces f.s.

file f.c
int f(int x)
{
  return x + 1;
}


Reading specs from /opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/specs
gcc version 2.95.2 19991024 (release)
/opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/cpp.exe -lang-c -v -D__GNUC__=2 -D_
_GNUC_MINOR__=95 -Dmc68000 -Drtems -D__rtems__ -D__ELF__ -D__mc68000__ -D__r
tems__ -D__rtems__ -D__ELF__ -D__mc68000 -D__rtems -Asystem(rtems) -Acpu(mc6
8000) -Acpu(m68k) -Amachine(m68k) f.c H:\TEMP/ccLDGzBk.i
GNU CPP version 2.95.2 19991024 (release) (68k, Motorola syntax)
#include "..." search starts here:
#include <...> search starts here:
/opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/include
/opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/../../../../m68k-rtems/include
End of search list.
The following default directories have been omitted from the search path:
/opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/../../../../include/g++-3
/opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/../../../../m68k-rtems/sys-include
End of omitted list.
/opt/rtems/lib/gcc-lib/m68k-rtems/2.95.2/cc1.exe
H:\TEMP/ccLDGzBk.i -quiet -dumpbase f.c -version -o f.s
GNU C version 2.95.2 19991024 (release) (m68k-rtems) compiled by GNU C
version 2.95.2 19991024 (release).

file f.s
 .file "f.c"
gcc2_compiled.:
.text
.globl f
 .type  f, at function
f:
 link.w %a6,#0
 move.l 8(%a6),%d1
 addq.l #1,%d1
 move.l %d1,%d0
 jbra .L2
.L2:
 unlk %a6
 rts
.Lfe1:
 .size  f,.Lfe1-f
 .ident "GCC: (GNU) 2.95.2 19991024 (release)"


--------------------------------------------

After the failed configure, here are the logs.
/tools/../build/config.log and /tools/../build/tools/build/config.log

It seems that the configuration cannot determine that this is cygwin.

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

Firstly: /tools/../build/config.log
configure:566: checking for RTEMS Version
configure:635: checking host system type
configure:656: checking target system type
configure:674: checking build system type
configure:697: checking rtems target cpu
configure:734: checking for a BSD compatible install
configure:787: checking whether build environment is sane
configure:844: checking whether make sets ${MAKE}
configure:883: checking for working aclocal
configure:896: checking for working autoconf
configure:909: checking for working automake
configure:922: checking for working autoheader
configure:935: checking for working makeinfo
configure:949: checking whether to enable maintainer-specific portions of
Makefiles
configure:1138: checking if the test suites are enabled?
configure:1159: checking if cpu m68k is supported


Secondly: /tools/../build/tools/build/config.log
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

configure:544: checking for RTEMS Version
configure:583: checking host system type
configure:616: checking for a BSD compatible install
configure:669: checking whether build environment is sane
configure:726: checking whether make sets ${MAKE}
configure:765: checking for working aclocal
configure:778: checking for working autoconf
configure:791: checking for working automake
configure:804: checking for working autoheader
configure:817: checking for working makeinfo
configure:831: checking whether to enable maintainer-specific portions of
Makefiles
configure:854: checking for Cygwin environment
configure:870: cc -c   conftest.c 1>&5
configure: In function `main':
configure:866: `__CYGWIN32__' undeclared (first use in this function)
configure:866: (Each undeclared identifier is reported only once
configure:866: for each function it appears in.)
configure: failed program was:
#line 859 "configure"
#include "confdefs.h"

int main() {

#ifndef __CYGWIN__
#define __CYGWIN__ __CYGWIN32__
#endif
return __CYGWIN__;
; return 0; }
configure:887: checking for mingw32 environment
configure:899: cc -c   conftest.c 1>&5
configure: In function `main':
configure:895: `__MINGW32__' undeclared (first use in this function)
configure:895: (Each undeclared identifier is reported only once
configure:895: for each function it appears in.)
configure: failed program was:
#line 892 "configure"
#include "confdefs.h"

int main() {
return __MINGW32__;
; return 0; }
configure:918: checking for executable suffix
configure:928: cc -o conftest    conftest.c  1>&5
Assembler messages:
Error: Can't open
 for reading.
: No such file or directory


---------------------------------

So as you can see,  it is looking for __CYGWIN32__
What is this?
Where does it come from?
How do I set it so the configuration works?


D.G.Somerton
Very frustrated, a supposedly simple procedure is in fact extremely
complicated. Why?