configure

#!/bin/sh

## Kindly supplied by Dirk Eddelbuettel

## check for pkg-config
pkg-config --version >/dev/null 2>&1
if [ $? -ne 0 ]; then
    echo "*** pkg-config is not installed."
    echo "*** We need pkg-config to proceed. Exiting."
    exit 1
fi

## check for gmp
pkg-config --exists gmp
if [ $? -ne 0 ]; then
    echo "*** pkg-config is installed but 'pkg-config --exists gmp' did not return 0."
    echo "*** We need gmp to proceed. Exiting."
    exit 2
fi

## check for mpfr
pkg-config --exists mpfr
if [ $? -ne 0 ]; then
    echo "*** pkg-config is installed but 'pkg-config --exists mpfr' did not return 0."
    echo "*** We need mpfr to proceed. Exiting."
    exit 3
fi

## get compiler flags and libs
pkgcflags=`pkg-config --cflags gmp mpfr`
pkglibs=`pkg-config --libs gmp mpfr`

## substitute them in
sed -e "s|@PKG_CXXFLAGS@|$pkgcflags|" -e "s|@PKG_LIBS@|$pkglibs|" src/Makevars.in > src/Makevars

exit 0