Qbs fails to build on x86 (32-bit)

/build/qbs-2.1.0/src/shared/quickjs/quickjs.c: In function 'JS_AtomIsNumericIndex1':
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c:3258:24: warning: implicit declaration of function 'JS_NewFloat64Impl'; did you mean 'JS_NewFloat64'? [-Wimplicit-function-declaration]
 3258 |                 return JS_NewFloat64Impl(ctx, -0.0);
      |                        ^~~~~~~~~~~~~~~~~
      |                        JS_NewFloat64
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c: In function 'mkVal':
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c:54237:24: error: 'JSValueUnion' undeclared (first use in this function)
54237 |     return (JSValue){ (JSValueUnion){ .int32 = val }, tag };
      |                        ^~~~~~~~~~~~
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c:54237:24: note: each undeclared identifier is reported only once for each function it appears in
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c:54237:37: error: expected '}' before '{' token
54237 |     return (JSValue){ (JSValueUnion){ .int32 = val }, tag };
      |                     ~               ^
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c: In function 'mkPtr':
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c:54242:24: error: 'JSValueUnion' undeclared (first use in this function)
54242 |     return (JSValue){ (JSValueUnion){ .ptr = p }, tag };
      |                        ^~~~~~~~~~~~
/build/qbs-2.1.0/src/shared/quickjs/quickjs.c:54242:37: error: expected '}' before '{' token
54242 |     return (JSValue){ (JSValueUnion){ .ptr = p }, tag };
      |                     ~               ^
make[4]: *** [src/shared/quickjs/CMakeFiles/qbsquickjs.dir/build.make:135: src/shared/quickjs/CMakeFiles/qbsquickjs.dir/quickjs.c.o] Error 1