From 05548f19dbe9e83dc68c4ac304d1aa33fc4df242 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Fri, 28 Dec 2018 11:35:49 +0100
Subject: Replace the detection mess with pkg-config.

---
 configure.sh | 159 ++---------------------------------------------------------
 1 file changed, 4 insertions(+), 155 deletions(-)

diff --git a/configure.sh b/configure.sh
index b586a9f..accaf5f 100644
--- a/configure.sh
+++ b/configure.sh
@@ -12,165 +12,14 @@ set -e                          # Abort on errors
 
 
 
-################################################################################
-# Search
-################################################################################
-
-if [ -z "${LAPACK_DIR}" ]; then
-    echo "BEGIN MESSAGE"
-    echo "LAPACK selected, but LAPACK_DIR not set. Checking some places..."
-    echo "END MESSAGE"
-    
-    FILES="liblapack.a liblapack.so"
-    DIRS="/usr/lib /usr/local/lib /usr/lib64/atlas /usr/lib/atlas-base/atlas ${HOME}"
-    for file in $FILES; do
-        for dir in $DIRS; do
-            if test -r "$dir/$file"; then
-                LAPACK_DIR="$dir"
-                break
-            fi
-        done
-    done
-    
-    if [ -z "$LAPACK_DIR" ]; then
-        echo "BEGIN MESSAGE"
-        echo "LAPACK not found"
-        echo "END MESSAGE"
-    else
-        echo "BEGIN MESSAGE"
-        echo "Found LAPACK in ${LAPACK_DIR}"
-        echo "END MESSAGE"
-    fi
-fi
-
-
-
-################################################################################
-# Build
-################################################################################
-
-if [ -z "${LAPACK_DIR}"                                                 \
-     -o "$(echo "${LAPACK_DIR}" | tr '[a-z]' '[A-Z]')" = 'BUILD' ]
-then
-    echo "BEGIN MESSAGE"
-    echo "Using bundled LAPACK..."
-    echo "END MESSAGE"
-    
-    # Set locations
-    THORN=LAPACK
-    NAME=lapack-3.4.2
-    SRCDIR=$(dirname $0)
-    BUILD_DIR=${SCRATCH_BUILD}/build/${THORN}
-    if [ -z "${LAPACK_INSTALL_DIR}" ]; then
-        INSTALL_DIR=${SCRATCH_BUILD}/external/${THORN}
-    else
-        echo "BEGIN MESSAGE"
-        echo "Installing LAPACK into ${LAPACK_INSTALL_DIR}"
-        echo "END MESSAGE"
-        INSTALL_DIR=${LAPACK_INSTALL_DIR}
-    fi
-    DONE_FILE=${SCRATCH_BUILD}/done/${THORN}
-    LAPACK_DIR=${INSTALL_DIR}
-
-    if [ "${F77}" = "none" ]; then
-        echo 'BEGIN ERROR'
-        echo "Building LAPACK requires a fortran compiler, but there is none configured: F77 = $F77. Aborting."
-        echo 'END ERROR'
-        exit 1
-    fi
-    
-    if [ -e ${DONE_FILE} -a ${DONE_FILE} -nt ${SRCDIR}/dist/${NAME}.tar.gz \
-                         -a ${DONE_FILE} -nt ${SRCDIR}/configure.sh ]
-    then
-        echo "BEGIN MESSAGE"
-        echo "LAPACK has already been built; doing nothing"
-        echo "END MESSAGE"
-    else
-        echo "BEGIN MESSAGE"
-        echo "Building LAPACK"
-        echo "END MESSAGE"
-        
-        # Build in a subshell
-        (
-        exec >&2                # Redirect stdout to stderr
-        if [ "$(echo ${VERBOSE} | tr '[:upper:]' '[:lower:]')" = 'yes' ]; then
-            set -x              # Output commands
-        fi
-        set -e                  # Abort on errors
-        cd ${SCRATCH_BUILD}
-        
-        # Set up environment
-        unset LIBS
-	if [ ${USE_RANLIB} != 'yes' ]; then
-            RANLIB=': ranlib'
-        fi
-        
-        echo "LAPACK: Preparing directory structure..."
-        mkdir build external done 2> /dev/null || true
-        rm -rf ${BUILD_DIR} ${INSTALL_DIR}
-        mkdir ${BUILD_DIR} ${INSTALL_DIR}
-        
-        echo "LAPACK: Unpacking archive..."
-        pushd ${BUILD_DIR}
-        ${TAR?} xzf ${SRCDIR}/dist/${NAME}.tgz
-        
-        echo "LAPACK: Configuring..."
-        cd ${NAME}/SRC
-        
-        echo "LAPACK: Building..."
-        if echo ${F77} | grep -i xlf > /dev/null 2>&1; then
-            FIXEDF77FLAGS=-qfixed
-        fi
-        #${F77} ${F77FLAGS} ${FIXEDF77FLAGS} -c *.f ../INSTALL/dlamch.f ../INSTALL/ilaver.f ../INSTALL/lsame.f ../INSTALL/slamch.f
-        #${AR} ${ARFLAGS} liblapack.a *.o
-	#if [ ${USE_RANLIB} = 'yes' ]; then
-	#    ${RANLIB} ${RANLIBFLAGS} liblapack.a
-        #fi
-        cat > make.cactus <<EOF
-SRCS = $(echo *.f) ../INSTALL/dlamch.f ../INSTALL/ilaver.f ../INSTALL/lsame.f ../INSTALL/slamch.f
-liblapack.a: \$(SRCS:%.f=%.o)
-	${AR} ${ARFLAGS} \$@ \$^
-	${RANLIB} ${RANLIBFLAGS} \$@
-%.o: %.f
-	${F77} ${F77FLAGS} ${FIXEDF77FLAGS} -c \$*.f -o \$*.o
-EOF
-        ${MAKE} -f make.cactus
-        
-        echo "LAPACK: Installing..."
-        cp liblapack.a ${LAPACK_DIR}
-        popd
-        
-        echo "LAPACK: Cleaning up..."
-        rm -rf ${BUILD_DIR}
-        
-        date > ${DONE_FILE}
-        echo "LAPACK: Done."
-        )
-        
-        if (( $? )); then
-            echo 'BEGIN ERROR'
-            echo 'Error while building LAPACK. Aborting.'
-            echo 'END ERROR'
-            exit 1
-        fi
-    fi
-    
-fi
-
-
-
 ################################################################################
 # Configure Cactus
 ################################################################################
 
-# Set options
-if [ "${LAPACK_DIR}" != '/usr/lib' -a "${LAPACK_DIR}" != '/usr/local/lib' -a \
-     "${LAPACK_DIR}" != 'NO_BUILD' ]
-then
-    : ${LAPACK_INC_DIRS=}
-    : ${LAPACK_LIB_DIRS="${LAPACK_DIR}"}
-fi
-: ${LAPACK_LIBS='lapack'}
+pkg-config --exists lapack || exit 1
+LAPACK_INC_DIRS=$(pkg-config --cflags-only-I lapack | sed 's/-I//g')
+LAPACK_LIB_DIRS=$(pkg-config --libs-only-L lapack | sed 's/-L//g')
+LAPACK_LIBS=$(pkg-config --libs-only-l lapack | sed 's/-l//g')
 
 # Pass options to Cactus
 echo "BEGIN MAKE_DEFINITION"
-- 
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