1 files changed, 151 insertions, 0 deletions
diff --git a/src/detect.sh b/src/detect.sh
new file mode 100755
index 0000000..d79f14d
--- /dev/null
+++ b/src/detect.sh
@@ -0,0 +1,151 @@
+#! /bin/bash
+
+################################################################################
+# Prepare
+################################################################################
+
+# Set up shell
+if [ "$(echo ${VERBOSE} | tr '[:upper:]' '[:lower:]')" = 'yes' ]; then
+    set -x                      # Output commands
+fi
+set -e                          # Abort on errors
+
+
+################################################################################
+# Search
+################################################################################
+
+if [ -z "${FFTW3_DIR}" ]; then
+    echo "BEGIN MESSAGE"
+    echo "FFTW3 selected, but FFTW3_DIR not set. Checking some places..."
+    echo "END MESSAGE"
+
+    DIRS="/usr /usr/local /usr/local/packages /usr/local/apps /opt/local ${HOME} c:/packages"
+    for dir in $DIRS; do
+      DIRS="$DIRS $dir/fftw3"
+    done
+    for dir in $DIRS; do
+        # libraries might have different file extensions
+        for libext in a so dylib; do
+            # libraries can be in /lib or /lib64
+            for libdir in lib64 lib/x86_64-linux-gnu lib lib/i386-linux-gnu lib/arm-linux-gnueabihf; do
+                FILES="include/fftw3.h $libdir/libfftw3.$libext"
+                # assume this is the one and check all needed files
+                FFTW3_DIR="$dir"
+                for file in $FILES; do
+                    # discard this directory if one file was not found
+                    if [ ! -r "$dir/$file" ]; then
+                        unset FFTW3_DIR
+                        break
+                    fi
+                done
+                # don't look further if all files have been found
+                if [ -n "$FFTW3_DIR" ]; then
+                    break
+                fi
+            done
+            # don't look further if all files have been found
+            if [ -n "$FFTW3_DIR" ]; then
+                break
+            fi
+        done
+        # don't look further if all files have been found
+        if [ -n "$FFTW3_DIR" ]; then
+            break
+        fi
+    done
+
+    if [ -z "$FFTW3_DIR" ]; then
+        echo "BEGIN MESSAGE"
+        echo "FFTW3 not found"
+        echo "END MESSAGE"
+    else
+        echo "BEGIN MESSAGE"
+        echo "Found FFTW3 in ${FFTW3_DIR}"
+        echo "END MESSAGE"
+    fi
+fi
+
+
+
+################################################################################
+# Build
+################################################################################
+
+if [ -z "${FFTW3_DIR}"                                                  \
+     -o "$(echo "${FFTW3_DIR}" | tr '[a-z]' '[A-Z]')" = 'BUILD' ]
+then
+    echo "BEGIN MESSAGE"
+    echo "Using bundled FFTW3..."
+    echo "END MESSAGE"
+    
+    # Check for required tools. Do this here so that we don't require
+    # them when using the system library.
+    if [ "x$TAR" = x ] ; then
+        echo 'BEGIN ERROR'
+        echo 'Could not find tar command.'
+        echo 'Please make sure that the (GNU) tar command is present,'
+        echo 'and that the TAR variable is set to its location.'
+        echo 'END ERROR'
+        exit 1
+    fi
+    if [ "x$PATCH" = x ] ; then
+        echo 'BEGIN ERROR'
+        echo 'Could not find patch command.'
+        echo 'Please make sure that the patch command is present,'
+        echo 'and that the PATCH variable is set to its location.'
+        echo 'END ERROR'
+        exit 1
+    fi
+
+    # Set locations
+    THORN=FFTW3
+    BUILD_DIR=${SCRATCH_BUILD}/build/${THORN}
+    if [ -z "${FFTW3_INSTALL_DIR}" ]; then
+        INSTALL_DIR=${SCRATCH_BUILD}/external/${THORN}
+    else
+        echo "BEGIN MESSAGE"
+        echo "Installing FFTW3 into ${FFTW3_INSTALL_DIR}"
+        echo "END MESSAGE"
+        INSTALL_DIR=${FFTW3_INSTALL_DIR}
+    fi
+    FFTW3_DIR=${INSTALL_DIR}
+else
+    THORN=FFTW3
+    DONE_FILE=${SCRATCH_BUILD}/done/${THORN}
+    mkdir ${SCRATCH_BUILD}/done 2> /dev/null || true
+    date > ${DONE_FILE}
+fi
+
+
+
+################################################################################
+# Configure Cactus
+################################################################################
+
+# Pass configuration options to build script
+echo "BEGIN MAKE_DEFINITION"
+echo "FFTW3_INSTALL_DIR = ${FFTW3_INSTALL_DIR}"
+echo "END MAKE_DEFINITION"
+
+# Set options
+if [ "${FFTW3_DIR}" != 'NO_BUILD' ]; then
+    : ${FFTW3_INC_DIRS="${FFTW3_DIR}/include"}
+    : ${FFTW3_LIB_DIRS="${FFTW3_DIR}/lib"}
+fi
+: ${FFTW3_LIBS='fftw3'}
+
+FFTW3_INC_DIRS="$(${CCTK_HOME}/lib/sbin/strip-incdirs.sh ${FFTW3_INC_DIRS})"
+FFTW3_LIB_DIRS="$(${CCTK_HOME}/lib/sbin/strip-libdirs.sh ${FFTW3_LIB_DIRS})"
+
+# Pass options to Cactus
+echo "BEGIN MAKE_DEFINITION"
+echo "FFTW3_DIR      = ${FFTW3_DIR}"
+echo "FFTW3_INC_DIRS = ${FFTW3_INC_DIRS}"
+echo "FFTW3_LIB_DIRS = ${FFTW3_LIB_DIRS}"
+echo "FFTW3_LIBS     = ${FFTW3_LIBS}"
+echo "END MAKE_DEFINITION"
+
+echo 'INCLUDE_DIRECTORY $(FFTW3_INC_DIRS)'
+echo 'LIBRARY_DIRECTORY $(FFTW3_LIB_DIRS)'
+echo 'LIBRARY           $(FFTW3_LIBS)'