Use system-openssl in Makefile.
Use /usr/bin/wish in gitk.
Fix perl install locations.

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -499,6 +499,9 @@ ifeq ($(uname_S),Darwin)
 	endif
 endif
 
+BASIC_CFLAGS += -I%p/lib/system-openssl/include -I%p/include
+BASIC_LDFLAGS += -L%p/lib/system-openssl/lib -L%p/lib
+
 ifdef NO_R_TO_GCC_LINKER
 	# Some gcc does not accept and pass -R to the linker to specify
 	# the runtime dynamic library path.
diff --git a/gitk b/gitk
--- a/gitk
+++ b/gitk
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Tcl ignores the next line -*- tcl -*- \
-exec wish "$0" -- "$@"
+exec /usr/bin/wish "$0" -- "$@"
 
 # Copyright (C) 2005-2006 Paul Mackerras.  All rights reserved.
 # This program is free software; it may be used, copied, modified
diff --git a/perl/Makefile b/perl/Makefile
--- a/perl/Makefile
+++ b/perl/Makefile
@@ -33,7 +33,7 @@ instdir_SQ = $(subst ','\'',$(prefix)/li
 	echo '	echo $(instdir_SQ)' >> $@
 else
 $(makfile): Makefile.PL ../GIT-CFLAGS
-	$(PERL_PATH) $< PREFIX='$(prefix_SQ)'
+	$(PERL_PATH) $< PREFIX='$(prefix_SQ)' LIB='%p/lib/perl5' INSTALLSITEMAN3DIR='%p/share/man/man3'
 endif
 
 # this is just added comfort for calling make directly in perl dir