diff --git a/Makefile.config.in b/Makefile.config.in
index e3bd2a2..b4ecea6 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -61,6 +61,7 @@
 
 prefix          := @prefix@
 PROJ_prefix     := $(prefix)
+program_prefix  := @program_prefix@
 PROJ_VERSION    := $(LLVMVersion)
 else
 ifndef PROJ_SRC_ROOT
diff --git a/Makefile.rules b/Makefile.rules
index 289adc2..f74c6f5 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -1541,7 +1541,7 @@
 else
 ToolBinDir = $(DESTDIR)$(PROJ_bindir)
 endif
-DestTool = $(ToolBinDir)/$(TOOLEXENAME)
+DestTool = $(ToolBinDir)/$(program_prefix)$(TOOLEXENAME)
 
 install-local:: $(DestTool)
 
@@ -1556,7 +1556,7 @@
 
 # TOOLALIAS install.
 ifdef TOOLALIAS
-DestToolAlias = $(ToolBinDir)/$(TOOLALIAS)$(EXEEXT)
+DestToolAlias = $(ToolBinDir)/$(program_prefix)$(TOOLALIAS)$(EXEEXT)
 
 install-local:: $(DestToolAlias)
 
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 2f381fe..ee7eb29 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -1732,6 +1732,11 @@
 dnl OCaml findlib META file
 AC_CONFIG_FILES([bindings/ocaml/llvm/META.llvm])
 
+dnl Add --program-prefix value to Makefile.rules. Already an ARG variable.
+test "x$program_prefix" = "xNONE" && program_prefix=""
+AC_SUBST([program_prefix])
+
+
 dnl Do special configuration of Makefiles
 AC_CONFIG_COMMANDS([setup],,[llvm_src="${srcdir}"])
 AC_CONFIG_MAKEFILE(Makefile)
diff --git a/configure b/configure
index 2bbfe59..3664774 100755
--- a/configure
+++ b/configure
@@ -792,6 +792,7 @@
 ENABLE_VISIBILITY_INLINES_HIDDEN
 RPATH
 RDYNAMIC
+program_prefix
 LIBOBJS
 LTLIBOBJS'
 ac_subst_files=''
@@ -10316,7 +10317,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10319 "configure"
+#line 10320 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -21409,6 +21410,10 @@
 ac_config_files="$ac_config_files bindings/ocaml/llvm/META.llvm"
 
 
+test "x$program_prefix" = "xNONE" && program_prefix=""
+
+
+
 ac_config_commands="$ac_config_commands setup"
 
 ac_config_commands="$ac_config_commands Makefile"
@@ -22334,11 +22339,12 @@
 ENABLE_VISIBILITY_INLINES_HIDDEN!$ENABLE_VISIBILITY_INLINES_HIDDEN$ac_delim
 RPATH!$RPATH$ac_delim
 RDYNAMIC!$RDYNAMIC$ac_delim
+program_prefix!$program_prefix$ac_delim
 LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 95; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 96; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
@@ -22357,7 +22363,7 @@
 
 cat >>$CONFIG_STATUS <<_ACEOF
 cat >"\$tmp/subs-2.sed" <<\CEOF$ac_eof
-/@[a-zA-Z_][a-zA-Z_0-9]*@/!b end
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
 _ACEOF
 sed '
 s/[,\\&]/\\&/g; s/@/@|#_!!_#|/g
@@ -22370,8 +22376,6 @@
 ' >>$CONFIG_STATUS <conf$$subs.sed
 rm -f conf$$subs.sed
 cat >>$CONFIG_STATUS <<_ACEOF
-:end
-s/|#_!!_#|//g
 CEOF$ac_eof
 _ACEOF
 
@@ -22619,7 +22623,7 @@
 s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
 s&@INSTALL@&$ac_INSTALL&;t t
 $ac_datarootdir_hack
-" $ac_file_inputs | sed -f "$tmp/subs-1.sed" | sed -f "$tmp/subs-2.sed" >$tmp/out
+" $ac_file_inputs | sed -f "$tmp/subs-1.sed" | sed -f "$tmp/subs-2.sed" | sed 's/|#_!!_#|//g' >$tmp/out
 
 test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
   { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
diff --git a/projects/sample/Makefile.llvm.rules b/projects/sample/Makefile.llvm.rules
index a655302..7ed1c1b 100644
--- a/projects/sample/Makefile.llvm.rules
+++ b/projects/sample/Makefile.llvm.rules
@@ -1437,7 +1437,7 @@
 uninstall-local::
 	$(Echo) Uninstall circumvented with NO_INSTALL
 else
-DestTool = $(DESTDIR)$(PROJ_bindir)/$(TOOLEXENAME)
+DestTool = $(DESTDIR)$(PROJ_bindir)/$(program_prefix)$(TOOLEXENAME)
 
 install-local:: $(DestTool)
 
@@ -1451,7 +1451,7 @@
 
 # TOOLALIAS install.
 ifdef TOOLALIAS
-DestToolAlias = $(DESTDIR)$(PROJ_bindir)/$(TOOLALIAS)$(EXEEXT)
+DestToolAlias = $(DESTDIR)$(PROJ_bindir)/$(program_prefix)$(TOOLALIAS)$(EXEEXT)
 
 install-local:: $(DestToolAlias)
 
diff --git a/tools/llvm-config/Makefile b/tools/llvm-config/Makefile
index e8c8692..b20b6bf 100644
--- a/tools/llvm-config/Makefile
+++ b/tools/llvm-config/Makefile
@@ -63,5 +63,5 @@
 install:: $(DESTDIR)$(PROJ_bindir)
 	$(Echo) Installing llvm-config-host
 	$(Verb) $(ProgInstall) $(BuildLLVMToolDir)/llvm-config \
-	  $(DESTDIR)$(PROJ_bindir)/llvm-config-host
+	  $(DESTDIR)$(PROJ_bindir)/$(program_prefix)llvm-config-host
 endif