configure's g++ -E doesn't use CXXFLAGS...

[David Lindes]

Hi there,

Perhaps this is already a known issue, but when I try to run ./configure
out of the Sablotron version 1.0 source tree, using the following
command line:

    ./configure LDFLAGS=-L/opt/third-party/lib 
CXXFLAGS=-I/opt/third-party/include CFLAGS=-I/opt/third-party/include

(/opt/third-party is where a bunch of stuff is installed in the environment I 
tried this in...)

I get this output:

    checking where to find xml parser... expat (new)
    checking expat.h usability... yes
    checking expat.h presence... no
    configure: WARNING: expat.h: accepted by the compiler, rejected by the 
preprocessor!
    configure: WARNING: expat.h: proceeding with the preprocessor's result
    configure: WARNING:     ## ------------------------------------ ##
    configure: WARNING:     ## Report this to address@hidden ##
    configure: WARNING:     ## ------------------------------------ ##
    checking for expat.h... no
    configure: error: Couldn't find the expat header file(s)

It says to report the bug, so this is it.

FYI, here's some info from config.log:

    configure:9119: checking where to find xml parser
    configure:9123: checking for XML_Parse in -lexpat
    configure:9154: g++ -o conftest -I/opt/third-party/include  
-L/opt/third-party/lib conftest.cc -lexpat   >&5
    configure:9157: $? = 0
    configure:9160: test -s conftest
    configure:9163: $? = 0
    configure:9175: result: yes
    configure:9261: result: expat (new)
    configure:9284: checking expat.h usability
    configure:9297: g++ -c -I/opt/third-party/include  conftest.cc >&5
    configure:9300: $? = 0
    configure:9303: test -s conftest.o
    configure:9306: $? = 0
    configure:9316: result: yes
    configure:9320: checking expat.h presence
    configure:9331: g++ -E  conftest.cc
    configure:9342: expat.h: No such file or directory
    configure:9337: $? = 1
    configure: failed program was:
    | #line 9322 "configure"
    | /* confdefs.h.  */
    |
    | #define PACKAGE_NAME ""
    | #define PACKAGE_TARNAME ""
    | #define PACKAGE_VERSION ""
    | #define PACKAGE_STRING ""
    | #define PACKAGE_BUGREPORT ""
    | #define STDC_HEADERS 1
    | #define HAVE_SYS_TYPES_H 1
    | #define HAVE_SYS_STAT_H 1
    | #define HAVE_STDLIB_H 1
    | #define HAVE_STRING_H 1
    | #define HAVE_MEMORY_H 1
    | #define HAVE_STRINGS_H 1
    | #define HAVE_INTTYPES_H 1
    | #define HAVE_STDINT_H 1
    | #define HAVE_UNISTD_H 1
    | #define HAVE_DLFCN_H 1
    | #define ENABLE_DOM 1
    | /* end confdefs.h.  */
    | #include <expat.h>
    configure:9356: result: no
    configure:9362: WARNING: expat.h: accepted by the compiler, rejected by the 
preprocessor!
    configure:9364: WARNING: expat.h: proceeding with the preprocessor's result
    configure:9392: checking for expat.h
    configure:9399: result: no
    configure:9563: error: Couldn't find the expat header file(s)

And some preamble information:

    This file contains any messages produced by compilers while
    running configure, to aid debugging if configure makes a mistake.

    It was created by configure, which was
    generated by GNU Autoconf 2.57.  Invocation command line was

      $ ./configure LDFLAGS=-L/opt/third-party/lib 
CXXFLAGS=-I/opt/third-party/include CFLAGS=-I/opt/third-party/include

    ## --------- ##
    ## Platform. ##
    ## --------- ##

    hostname = [deleted from e-mail]
    uname -m = i686
    uname -r = 2.4.21-1a
    uname -s = Linux
    uname -v = #1 Thu Jul 3 15:47:32 PDT 2003



Anyway, hopefully that's all the info you need... I'm sure I can work
around it (and I realize I'm probably just not using the proper flags to
./configure), but thought you might like to know.  (In case you don't
already.)

Cheers,

    David