MSYS2-MinGW64: `make failed` error while doing npm install

[aamirglb]

Hi,
I compiled the libpostal C library using MSYS2 on Windows 11, using GCC 14.2.0. After that I cloned the node-postal and updated the binding.gyp file for MSYS2-MinGW64 as follows:

{
    "targets": [
        {
            "target_name": "expand",
            "sources": [
                "src/expand.cc"
            ],
            "libraries": [
                "-lpostal", "-L/mingw64/lib"
            ],
            "include_dirs": [
                "<!(node -e \"require('nan')\")",
                "/mingw64/include",
            ]
        },
        {
            "target_name": "parser",
            "sources": [
                "src/parser.cc"
            ],
            "libraries": [
                "-lpostal", "-L/mingw64/lib"
            ],
            "include_dirs": [
                "<!(node -e \"require('nan')\")",
                "/mingw64/include",
            ]
        }
    ]
}

When I try to install node-postal using npm install, I get the following error:

gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ]
make: Entering directory '/c/temp/postal-test/node-postal/build'
expand.target.mk:89: *** target pattern contains no '%'.  Stop.
make: Leaving directory '/c/temp/postal-test/node-postal/build'
gyp ERR! build error
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack at ChildProcess.<anonymous> (C:\temp\postal-test\msys64\mingw64\lib\node_modules\npm\node_modules\node-gyp\lib\build.js:216:23)
gyp ERR! stack at ChildProcess.emit (node:events:513:28)
gyp ERR! stack at ChildProcess._handle.onexit (node:internal/child_process:294:12)
gyp ERR! System MINGW32_NT-10.0 10.0.22631
gyp ERR! command "C:\\temp\\postal-test\\msys64\\mingw64\\bin\\node.exe" "C:\\temp\\postal-test\\msys64\\mingw64\\lib\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\temp\postal-test\node-postal
gyp ERR! node -v v23.5.0
gyp ERR! node-gyp -v v11.0.0
gyp ERR! not ok

Following lines in auto generated expand.target.mk are causing this error:

$(OBJS): TOOLSET := $(TOOLSET)
$(OBJS): GYP_CFLAGS := $(DEFS_$(BUILDTYPE)) $(INCS_$(BUILDTYPE))  $(CFLAGS_$(BUILDTYPE)) $(CFLAGS_C_$(BUILDTYPE))
$(OBJS): GYP_CXXFLAGS := $(DEFS_$(BUILDTYPE)) $(INCS_$(BUILDTYPE))  $(CFLAGS_$(BUILDTYPE)) $(CFLAGS_CC_$(BUILDTYPE))

How can I fix this error?
Thanks in advance