Use "=" instead of "?=" for compatibility.

diff --git a/Makefile b/Makefile
index a91066734bdd882628ebb5e558e38735dbb4ea56..56a216a4cf3d27fddd60413f58b8e75ec5578375 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ INCLUDEDIR      = $(PREFIX)/include
 LIBDIR         = $(PREFIX)/lib
 MANDIR         = $(PREFIX)/man
 EXAMPLEDIR     = $(PREFIX)/share/examples/mandoc
-INSTALL                ?= install
+INSTALL                = install
 INSTALL_PROGRAM        = $(INSTALL) -m 0755
 INSTALL_DATA   = $(INSTALL) -m 0444
 INSTALL_LIB    = $(INSTALL) -m 0644