diff --git a/share/mk/bsd.links.mk b/share/mk/bsd.links.mk
--- a/share/mk/bsd.links.mk
+++ b/share/mk/bsd.links.mk
@@ -14,16 +14,22 @@
 .ORDER: realinstall _installlinks
 _installlinks:
 .for s t in ${LINKS}
+# On MacOS, assume case folding FS, and don't install links from foo.x to FOO.x.
+.if ${.MAKE.OS} != "Darwin" || ${s:tu} != ${t:tu}
 .if defined(LINKTAGS)
 	${INSTALL_LINK} ${TAG_ARGS:D${TAG_ARGS},${LINKTAGS}} ${DESTDIR}${s} ${DESTDIR}${t}
 .else
 	${INSTALL_LINK} ${TAG_ARGS} ${DESTDIR}${s} ${DESTDIR}${t}
 .endif
+.endif
 .endfor
 .for s t in ${SYMLINKS}
+# On MacOS, assume case folding FS, and don't install links from foo.x to FOO.x.
+.if ${.MAKE.OS} != "Darwin" || ${s:tu} != ${t:tu}
 .if defined(LINKTAGS)
 	${INSTALL_SYMLINK} ${TAG_ARGS:D${TAG_ARGS},${LINKTAGS}} ${s} ${DESTDIR}${t}
 .else
 	${INSTALL_SYMLINK} ${TAG_ARGS} ${s} ${DESTDIR}${t}
 .endif
+.endif
 .endfor
diff --git a/share/mk/bsd.man.mk b/share/mk/bsd.man.mk
--- a/share/mk/bsd.man.mk
+++ b/share/mk/bsd.man.mk
@@ -234,6 +234,8 @@
 .endif	# ${MK_MANCOMPRESS} == "no"
 .endif
 .for l t in ${_MANLINKS}
+# On MacOS, assume case folding FS, and don't install links from foo.x to FOO.x.
+.if ${.MAKE.OS} != "Darwin" || ${l:tu} != ${t:tu}
 .if ${MK_MANSPLITPKG} == "no"
 	rm -f ${DESTDIR}${t} ${DESTDIR}${t}${MCOMPRESS_EXT}; \
 	    ${INSTALL_MANLINK} ${TAG_ARGS} ${DESTDIR}${l}${ZEXT} ${DESTDIR}${t}${ZEXT}
@@ -241,6 +243,7 @@
 	rm -f ${DESTDIR}${t} ${DESTDIR}${t}${MCOMPRESS_EXT}; \
 	    ${INSTALL_MANLINK} ${TAG_ARGS:D${TAG_ARGS},man} ${DESTDIR}${l}${ZEXT} ${DESTDIR}${t}${ZEXT}
 .endif
+.endif
 .endfor
 
 manlint: