Hi.
I built Chipmunk from source using CMake + MSVC 2019.
Then, when using MSVC command line to link any program that uses cpHastySpace, I get the error

test.obj : error LNK2019: unresolved external symbol cpHastySpaceNew referenced in function main
test.exe : fatal error LNK1120: 1 unresolved externals

cpSpaceNew works, though.

Full CMD session to reproduce the issue:

c:\code\chipmunk2d>git rev-parse HEAD
1d01b2a40be3990f7b79f575b7ff35f3c62042e3

c:\code\chipmunk2d>git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean

c:\code\chipmunk2d>cmake --version
cmake version 3.17.2

CMake suite maintained and supported by Kitware (kitware.com/cmake).

c:\code\chipmunk2d>cmake . -DBUILD_DEMOS=OFF
-- Building for: Visual Studio 16 2019
-- Selecting Windows SDK version 10.0.18362.0 to target Windows 10.0.18363.
-- The C compiler identification is MSVC 19.25.28614.0
-- The CXX compiler identification is MSVC 19.25.28614.0
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
Configuring Chipmunk2D version 7.0.3
-- Configuring done
-- Generating done
-- Build files have been written to: C:/code/chipmunk2d

c:\code\chipmunk2d>cmake --build . --config Release
Microsoft (R) Build Engine version 16.5.0+d4cbfca49 for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

  Checking Build System
  Building Custom Rule C:/code/chipmunk2d/src/CMakeLists.txt
  chipmunk.c
  cpArbiter.c
  cpArray.c
  cpBBTree.c
  cpBody.c
  cpCollision.c
  cpConstraint.c
  cpDampedRotarySpring.c
  cpDampedSpring.c
  cpGearJoint.c
  cpGrooveJoint.c
  cpHashSet.c
  cpHastySpace.c
  cpMarch.c
  cpPinJoint.c
  cpPivotJoint.c
  cpPolyShape.c
  cpPolyline.c
C:\code\chipmunk2d\include\chipmunk/cpPolyline.h(9,17): warning C4200: nonstandard extension used: zero-sized array in
struct/union [C:\code\chipmunk2d\src\chipmunk.vcxproj]
C:\code\chipmunk2d\include\chipmunk/cpPolyline.h(9,17): message : This member will be ignored by a defaulted constructo
r or copy/move assignment operator [C:\code\chipmunk2d\src\chipmunk.vcxproj]
  cpRatchetJoint.c
  cpRobust.c
  Generating Code...
  Compiling...
  cpRotaryLimitJoint.c
  cpShape.c
  cpSimpleMotor.c
  cpSlideJoint.c
  cpSpace.c
  cpSpaceComponent.c
  cpSpaceDebug.c
  cpSpaceHash.c
  cpSpaceQuery.c
  cpSpaceStep.c
  cpSpatialIndex.c
  cpSweep1D.c
  Generating Code...
     Creating library C:/code/chipmunk2d/src/Release/chipmunk.lib and object C:/code/chipmunk2d/src/Release/chipmunk.ex
  p
  chipmunk.vcxproj -> C:\code\chipmunk2d\src\Release\chipmunk.dll
  Building Custom Rule C:/code/chipmunk2d/src/CMakeLists.txt
  chipmunk.c
  cpArbiter.c
  cpArray.c
  cpBBTree.c
  cpBody.c
  cpCollision.c
  cpConstraint.c
  cpDampedRotarySpring.c
  cpDampedSpring.c
  cpGearJoint.c
  cpGrooveJoint.c
  cpHashSet.c
  cpHastySpace.c
  cpMarch.c
  cpPinJoint.c
  cpPivotJoint.c
  cpPolyShape.c
  cpPolyline.c
C:\code\chipmunk2d\include\chipmunk/cpPolyline.h(9,17): warning C4200: nonstandard extension used: zero-sized array in
struct/union [C:\code\chipmunk2d\src\chipmunk_static.vcxproj]
C:\code\chipmunk2d\include\chipmunk/cpPolyline.h(9,17): message : This member will be ignored by a defaulted constructo
r or copy/move assignment operator [C:\code\chipmunk2d\src\chipmunk_static.vcxproj]
  cpRatchetJoint.c
  cpRobust.c
  Generating Code...
  Compiling...
  cpRotaryLimitJoint.c
  cpShape.c
  cpSimpleMotor.c
  cpSlideJoint.c
  cpSpace.c
  cpSpaceComponent.c
  cpSpaceDebug.c
  cpSpaceHash.c
  cpSpaceQuery.c
  cpSpaceStep.c
  cpSpatialIndex.c
  cpSweep1D.c
  Generating Code...
  chipmunk_static.vcxproj -> C:\code\chipmunk2d\src\Release\chipmunk.lib
  Building Custom Rule C:/code/chipmunk2d/CMakeLists.txt

c:\code\chipmunk2d>set INCLUDE=%INCLUDE%;c:\code\chipmunk2d\include

c:\code\chipmunk2d>set LIB=%LIB%;c:\code\chipmunk2d\src\Release

c:\code\chipmunk2d>type test.c
#include <chipmunk/chipmunk.h>

int main() {
    cpHastySpaceNew();
    return 0;
}

c:\code\chipmunk2d>cl /MD chipmunk.lib msvcrt.lib test.c
Microsoft (R) C/C++ Optimizing Compiler Version 19.25.28614 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

test.c
Microsoft (R) Incremental Linker Version 14.25.28614.0
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:test.exe
chipmunk.lib
msvcrt.lib
test.obj
test.obj : error LNK2019: unresolved external symbol cpHastySpaceNew referenced in function main
test.exe : fatal error LNK1120: 1 unresolved externals

Using cpSpaceNew instead works, though:

c:\code\chipmunk2d>type test.c
#include <chipmunk/chipmunk.h>

int main() {
    cpSpaceNew();
    return 0;
}

c:\code\chipmunk2d>cl /MD chipmunk.lib msvcrt.lib test.c
Microsoft (R) C/C++ Optimizing Compiler Version 19.25.28614 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

test.c
Microsoft (R) Incremental Linker Version 14.25.28614.0
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:test.exe
chipmunk.lib
msvcrt.lib
test.obj
   Creating library test.lib and object test.exp