Windows Build with MinGW-64 failed on windres command

[asschmidt]

Issue description

Building libzmq under Windows 10 with MinGW-64 is failing on the call of windres due to the usage of wrong command line parameters/syntax.

It seems that the check in CMakeList.txt line 1186 fails because of upper/lower case issue

Original code from CMakeList.txt
if(CMAKE_SYSTEM_PROCESSOR MATCHES "i386"
OR CMAKE_SYSTEM_PROCESSOR MATCHES "i486"
OR CMAKE_SYSTEM_PROCESSOR MATCHES "i586"
OR CMAKE_SYSTEM_PROCESSOR MATCHES "i686"
OR CMAKE_SYSTEM_PROCESSOR MATCHES "x86"
OR CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64"
OR CMAKE_SYSTEM_PROCESSOR MATCHES "amd64")

On my machine the CMAKE_SYSTEM_PROCESSOR variable has a value of "AMD64". After adding this uppercase value to the CMakeFile check on line 1186 the build works.

Environment

• libzmq version (commit hash if unreleased): 4.3.5
• OS: Windows 10
• CMake Version 3.30.3

Minimal test code / Steps to reproduce the issue

1. cmake -G"MinGW Makefiles" -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=10.0 -DENABLE_CURVE=OFF -DZMQ_BUILD_TESTS=OFF -DMINGW=ON ..
2. mingw32-make

What's the actual result? (include assertion message & call stack if applicable)

Fail on windres call

What's the expected result?

Successfull build