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# Search for CLHEP in standard directories using standard CLHEP names
#AC_SEARCH_CLHEP
#----------------------------------------
AC_DEFUN([AC_SEARCH_CLHEP], [
#AC_ARG_WITH([cedar_pkgname],
# AC_HELP_STRING(--with-@&t@cedar_pkgname, path to cedar_prettyname generator),
# [pkgpath=$with_@&t@cedar_pkgname],
# [pkgpath=${prefix}])
AC_ARG_VAR(CLHEPPATH,[The path to where CLHEP is installed. Default is $prefix.])
AC_ARG_VAR(CLHEPLIB,[The argument to be used when linking the CLHEP library. Default is "-lCLHEP".])
AC_ARG_VAR(CLHEPINCLUDE,[The argument used when compiling source files which use CLHEP. Default is "-I$CLHEPPATH/include".])
AC_MSG_CHECKING([if CLHEPPATH, CLHEPLIB and CLHEPINCLUDE are set])
notset=""
if test -z "$CLHEPPATH"; then
notset="true"
for dirbase in / /usr $ac_default_prefix $prefix; do
if test -z "$CLHEPLIB"; then
for filename in $dirbase/lib/libCLHEP-?.?.?.?.so $dirbase/lib/libCLHEP.so; do
if test -f $filename; then
CLHEPPATH=$dirbase
filename=`basename $filename`
CLHEPLIB=`echo $filename | sed -e 's/^lib/-l/' -e 's/\.so$//'`
fi
done
else
filename=`echo $CLHEPLIB | sed -e 's/^-l/lib/'`.so
if test -f $dirbase/lib/$filename; then
CLHEPPATH=$dirbase
fi
fi
done
else
if test -z "$CLHEPLIB"; then
notset="true"
for filename in $CLHEPPATH/lib/libCLHEP-?.?.?.?.so CLHEPPATH/lib/libCLHEP.so; do
if test -f $filename; then
filename=`basename $filename`
CLHEPLIB=`echo $filename | sed -e 's/^lib/-l/' -e 's/\.so$//'`
fi
done
fi
fi
if test -z"$CLHEPINCLUDE"; then
notset="true"
CLHEPINCLUDE=-I$CLHEPPATH/include
fi
if test -z "$notset"; then
AC_MSG_RESULT([yes ($CLHEPPATH, $CLHEPLIB and $CLHEPINCLUDE)])
else
AC_MSG_RESULT([no (found $CLHEPPATH, $CLHEPLIB and $CLHEPINCLUDE)])
fi
AC_TEST_CLHEP
AC_SUBST(CLHEPPATH)
AC_SUBST(CLHEPLIB)
AC_SUBST(CLHEPINCLUDE)
])
# Check whether we can link against CLHEP
#AC_TEST_CLHEP
AC_DEFUN([AC_TEST_CLHEP],[
## Now lets see if the libraries work properly
oldLIB="$LIBS"
oldLDFLAGS="$LDFLAGS"
oldCPPFLAGS="$CPPFLAGS"
LIBS="$LIBS $CLHEPLIB"
LDFLAGS="$LDFLAGS -L$CLHEPPATH/lib"
CPPFLAGS="$CPPFLAGS $CLHEPINCLUDE"
## Check CLHEP
AC_MSG_CHECKING([that CLHEP works])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <CLHEP/Random/Random.h>
namespace CLHEP {}]], [[using namespace CLHEP; HepRandom r; r.flat();]])],AC_MSG_RESULT(yes),[AC_MSG_RESULT(no)
LIBS="$oldLIB"
LDFLAGS="$oldLDFLAGS"
CPPFLAGS="$oldCPPFLAGS"
AC_MSG_ERROR(CLHEP must be installed to continue.)])
])

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