[Lazarus] Cross compile problem with linklib and static libraries

[Anthony Walter]

I am having a problem linking static libraries on for 32bit windows. I've
got everything setup and working on Ubuntu 12.04 and have built one project
which targets i386-linux, i386-win32, and x86_64-win64.

I'm using mingw-w64 on Ubuntu to create static lirbaries for openssl and
the ssl crypto library.

The problem:

I can build and run my application on linux (i386-linux) and 64bit windows
(x86_64-win64), but it fails to link properly when I target 32bit windows
(i386-win32). The errors I am getting when I link for i386-win32 are:

Error: Undefined symbol: __time32
Undefined symbol: __localtime32
Undefined symbol: __gmtime32
There were 3 errors compiling module, stopping

I do not get these error when targeting x86_64-win64 and my test app run
perfectly on 64bit windows.

Building a pascal application which links to two openssl static library
files.  Here is a snippet of my source code:

// Unit to link a static openssl library to my pascal applications
// With this unit I can build a single exe with no external dependencies
unit CryptoLib;

{$i cross.inc}

interface

const
  SSL_ERROR_NONE = 0;
  // snip ...

{ SSL routines }

function SSL_library_init: Integer; cdecl; external;
// snip ...

{ Hashing routines }

function MD5_Init(out context: TMD5Ctx): LongBool; cdecl; external;
// snip ...

// if were using window i pull in ming-w64 libraries
{$ifdef windows}
  // pulled in from x86_64-w64-mingw32/lib or i686-w64-mingw32/lib
  // as determined by project target cpu
  // these libs satisfy the compiler
  {$linklib msvcrt}
  {$linklib user32}
  {$linklib kernel32}
  {$linklib ws2_32}
  {$linklib advapi32}
  {$linklib gdi32}
  // libgcc.a is placed in project i386-win32 and x86_64-win64 folders, i
copy it from
  // /usr/lib/gcc/i686-w64-mingw32/4.6
and /usr/lib/gcc/x86_64-w64-mingw32/4.6 respectively
  // it needs to be here needed to resolve symbol "___chkstk_ms"
  {$linklib gcc}
  // The problem ... on i386-win32 these symbols are not resolved
  // Error: Undefined symbol: __time32
  // Undefined symbol: __localtime32
  // Undefined symbol: __gmtime32
  // There were 3 errors compiling module, stopping
  //
  // *BUT*
  //
  // When I switch to x86_64-win64 everything works fine
  // and the test application run perfectly on 64bit windows
{$endif}

// project options set link
// i386-linux version build using make
// i686-ming-w64 and x86_64-ming-w64 build using make configure script

// openssl static libraries. path is set by target information
// $(ProjectDir)/i386-linux, i386-win32, or x86_64-win64

{$linklib libssl.a} // static ssl library
{$linklib libcrypto.a} // static ssl cryptography library

implementation

end.

In summary here is what I've done:
I installed mingw-w64
I built versions of openssl using both x86_64-w64-mingw32 and
i686-w64-mingw32 successfully.
I copied the resulting libssl.a and libcrypto.a static libraries to my
project lib/i386-win32 and lib/x86_64-win64 folders.
I setup my environment to refer to /usr/x86_64-w64-mingw32/lib
or /usr/i686-w64-mingw32/lib in order to satisy msvcrt, user32 ect
I had to copy libgcc.a from /usr/lib/gcc/x86_64-w64-mingw32/4.6
and /usr/lib/gcc/i686-w64-mingw32/4.6
  libgcc.a contains "___chkstk_ms" which needs to be resolved.
  i place a copy of the file in my project lib/i386-win32
and lib/x86_64-win64 folders.
On linux I build for i386-linux and it succeeds. The test application on
linux returns the expected results from openssl functions.
On linux I build for x86_64-win64 and it succeeds. The test application is
copied to my 64bit windows box and returns the expected results from
openssl functions.
On linux I build for i386-win32 and it the linker fails when it cannot
locale __time32, __localtime32, and __gmtime32.

I have tried searching for:
find . -name "*.a" -exec i686-w64-mingw32-nm -o {} \; | grep -i time32
And I cannot find the functions.

I am at my wits end here. I could really use some help in finding why my
pascal compiler needs  __time32 when using a static lib built
from i686-ming-w64

Thanks
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