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Preprocessing C++ only

From: Alan Larkin
Subject: Preprocessing C++ only
Date: Mon, 08 Jan 2007 13:30:39 +0000
User-agent: Thunderbird 2.0b1 (X11/20070101)

I cant figure out how to write a which directs that a %.cpp
be preprocessed to a %.i (and not compiled). Anybody got a suggestion?

Something like:

AM_CPPFLAGS = -I$(top_srcdir)/src @INCLTDL@
bin_PROGRAMS = Quadratic
Quadratic_SOURCES = Quadratic.cpp
Quadratic_CPPFLAGS = -E #-o Quadratic.i

chokes with the following:

g++ -DHAVE_CONFIG_H -I. -I../src  -E    -g -O2 -MT Quadratic-Quadratic.o
-MD -MP -MF .deps/Quadratic-Quadratic.Tpo -c -o Quadratic-Quadratic.o
`test -f 'Quadratic.cpp' || echo './'`Quadratic.cpp

mv -f .deps/Quadratic-Quadratic.Tpo .deps/Quadratic-Quadratic.Po
/bin/sh ../libtool --tag=CXX   --mode=link g++  -g -O2   -o Quadratic

g++ -g -O2 -o Quadratic Quadratic-Quadratic.o Quadratic-Quadratic.o:
file not recognized: File format not recognized
collect2: ld returned 1 exit status
make[1]: *** [Quadratic] Error 1

Thanks very much.

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