diff --git a/sys/modules/Makefile b/sys/modules/Makefile
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -582,7 +582,9 @@
 _gve=		gve
 _igc=		igc
 # gcc13 and earlier lack __builtin_bitcountg used by linux emulation
-.if !(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 140000)
+# clang18 and earlier lack __builtin_popcountg used by linux emulation
+.if !(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 140000) && \
+    !(${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 190000)
 _iwlwifi=	iwlwifi
 .endif
 _rtw88=		rtw88