diff --git a/sys/compat/linuxkpi/common/include/linux/bitops.h b/sys/compat/linuxkpi/common/include/linux/bitops.h
--- a/sys/compat/linuxkpi/common/include/linux/bitops.h
+++ b/sys/compat/linuxkpi/common/include/linux/bitops.h
@@ -57,10 +57,18 @@
 #define	hweight64(x)	bitcount64(x)
 #define	hweight_long(x)	bitcountl(x)
 
+#if __has_builtin(__builtin_popcountg)
 #define	HWEIGHT8(x)	(__builtin_popcountg((uint8_t)(x)))
 #define	HWEIGHT16(x)	(__builtin_popcountg((uint16_t)(x)))
 #define	HWEIGHT32(x)	(__builtin_popcountg((uint32_t)(x)))
 #define	HWEIGHT64(x)	(__builtin_popcountg((uint64_t)(x)))
+#else
+/* LLVM before 19, gcc before 14. */
+#define	HWEIGHT8(x)	(__const_bitcount8((uint8_t)(x)))
+#define	HWEIGHT16(x)	(__const_bitcount16((uint16_t)(x)))
+#define	HWEIGHT32(x)	(__const_bitcount32((uint32_t)(x)))
+#define	HWEIGHT64(x)	(__const_bitcount64((uint64_t)(x)))
+#endif
 
 static inline int
 __ffs(int mask)
diff --git a/sys/modules/Makefile b/sys/modules/Makefile
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -582,10 +582,7 @@
 _ena=		ena
 _gve=		gve
 _igc=		igc
-# gcc13 and earlier lack __builtin_bitcountg used by linux emulation
-.if !(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 140000)
 _iwlwifi=	iwlwifi
-.endif
 _rtw88=		rtw88
 _rtw89=		rtw89
 _vmware=	vmware