Respect CC, CXX, CFLAGS and CXXFLAGS

svn path=/head/; revision=42060

textproc/sp/files/patch-ab

@@ -1,5 +1,5 @@
---- Makefile.orig	Sat Oct 10 00:15:02 1998
-+++ Makefile	Mon Jan 31 14:38:24 2000
+--- Makefile.orig	Sat Oct 10 04:15:02 1998
++++ Makefile	Mon Apr 30 01:06:08 2001
 @@ -1,11 +1,12 @@
  # Copyright (c) 1994, 1995 James Clark
  # See the file COPYING for copying permission.
@@ -15,15 +15,34 @@
  # You might want to uncomment this on BSD systems
  #INSTALL=install
  
-@@ -33,7 +34,7 @@
+@@ -13,7 +14,7 @@
+ # you must use -fno-implicit-templates
+ # and -O (or any optimization level >= 1).
+ # c++ is a front-end for gcc which takes care of linking with -lstdc++
+-CXX=c++ -fno-implicit-templates -O2
++CXX+=-fno-implicit-templates
+ WARN=#-Wall -Wno-reorder -Wwrite-strings -Wpointer-arith -Wnested-externs -Woverloaded-virtual -Wbad-function-cast
+ # Executables will be *very* large if you use -g.
+ DEBUG=
+@@ -33,14 +34,14 @@
  # Add -Dsig_atomic_t=int on SunOS 4.1.x with g++ (or any other platform
  #  which doesn't appropriately define sig_atomic_t).
  # Add -DJADE_MIF to include the Jade MIF backend
 -XDEFINES=
 +XDEFINES=-DSGML_CATALOG_FILES_DEFAULT=\"/usr/local/share/sgml/catalog\"
  DEFINES=-DSP_HAVE_BOOL -DSP_ANSI_CLASS_INST -DSP_MULTI_BYTE $(XDEFINES)
- CXXFLAGS=-ansi $(DEBUG) $(WARN)
+-CXXFLAGS=-ansi $(DEBUG) $(WARN)
++CXXFLAGS+=-ansi $(DEBUG) $(WARN)
  # Flag to pass to CXX to make it output list of dependencies as a Makefile.
+ CXXDEPGENFLAGS=-MM
+ LDFLAGS=
+-CC=gcc
+-CFLAGS=-O $(DEBUG)
++#CC=gcc
++CFLAGS+=$(DEBUG)
+ # Missing library functions
+ # Uncomment these if your C++ system doesn't provide them.
+ LIBOBJS=#strerror.o memmove.o
 @@ -48,14 +49,14 @@
  # If you defined SP_HAVE_SOCKET, add any libraries that are needed for sockets
  # -lsocket -lnsl needed on Solaris 2.x