Hi,

On 28/04/21 21:22, Robert Smith wrote:
Hi Jan,

Thank you for your response.
Obviously the file mem_dbg is not included and that is why I am having this problem.

The questions are:
Whether the "enable-crypto-mdebug" flag supported in Windows at all?

Whether this is known issue?

What control do I have over Windows build (I mean how can I include or exclude certain file)? My assumption was if I have to mess with Windows build scripts, I am in the wrong direction. However I could be I wrong ...

Whether the file mem_dbg was excluded on purpose from Windows build?

there does not seem to be anything specific about mem_dbg ; I don't have Visual Studio but if I do a mingw64 build of openssl 1.1.1k with "enable-crypto-mdebug" set then it builds just fine.

How did you configure openssl ? what command did you run and what build environment are you using? msys?

It will also be interesting to see the output of
  perl configdata.pm --dump
after you've run  the Configure script - that should tell you whether mdebug is enabled or not:

    crypto-mdebug           [default] OPENSSL_NO_CRYPTO_MDEBUG

is the default.

HTH,

JJK


On Wednesday, April 28, 2021, 06:51:36 AM EDT, Jan Just Keijser <janj...@nikhef.nl> wrote:


Hi,

On 26/04/21 20:29, Robert Smith via openssl-users wrote:
Hello everyone.

I'm trying to recompile OpenSSL version 1.1.1k under Windows 10 with the following configuration flag enable-crypto-mdebug
and getting the following linker error:


 Creating library apps\openssl.lib and object apps\openssl.exp
openssl.obj : error LNK2019: unresolved external symbol _CRYPTO_mem_leaks referenced in function _main
apps\openssl.exe : fatal error LNK1120: 1 unresolved externals
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\link.EXE"' : return code '0x460'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.

Wasted already a few hours trying to figure out the cause for this failure.


when building and linking with "enable-crypto-mdebug" set the file "crypto/mem_dbg.o" needs to be included in the library libcrypto.a (or crypto.lib); check that this file is indeed included when creating the crypto library.

For the record: a Linux build with "enable-crypto-mdebug" works fine.

HTH,

JJK



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