External header files not found

Most likely, the error is the following.  For each of the CFLAGS.
CPPFLAGS etc you have package specific additional flags like PKG_CFLAGS.
PKG_CPPFLAGS.  You should use those instead.

Kasper


On Fri, Apr 19, 2013 at 3:59 PM, cstrato <cstrato at aon.at
<mailto:cstrato at aon.at>> wrote:

    Dear All,

    Currently I am testing whether my package xps can be compiled on the
    Mac with clang, and indeed everything is fine.

    However, when I create ~/.R/Makevars to set CC and CXX as described in:
    http://cran.r-project.org/doc/__manuals/r-patched/R-admin.__html#OS-X-packages
    <http://cran.r-project.org/doc/manuals/r-patched/R-admin.html#OS-X-packages>
    then the header files of the external framework that I use are no
    longer found.

    Since my package depends on the external C++ framework, I had to
    create my own 'configure.in <http://configure.in>' and 'Makefile'
    which checks e.g. for the presence of the variable ROOTSYS
    containing the path to the framework.

    Trying to follow the example:
    http://cran.r-project.org/doc/__manuals/r-patched/R-exts.html#__Configure-example
    <http://cran.r-project.org/doc/manuals/r-patched/R-exts.html#Configure-example>
    I added following lines to my configure.in <http://configure.in> file:

    : ${R_HOME=`R RHOME`}
    if test -z "${R_HOME}"; then
        echo "could not determine R_HOME"
        exit 1
    fi
    CC=`"${R_HOME}/bin/R" CMD config CC`
    CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
    CPPFLAGS=`"${R_HOME}/bin/R" CMD config CPPFLAGS`
    AC_LANG(C++)
    AC_PROG_CPP
    AC_PROG_CC

    ROOT_CPPFLAGS="-I. -I${ROOTSYS}/include"
    CPPFLAGS="${CPPFLAGS} ${ROOT_CPPFLAGS}"

    However, this did not help, the header files are still not found.

    Can someone tell me what I need to do so that the external header
    files are found, or does ~/.R/Makevars overwrite everything?

    Best regards,
    Christian
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