Index: /issm/trunk-jpl/externalpackages/gmt/install-6.0-mac.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/gmt/install-6.0-mac.sh	(revision 25203)
+++ /issm/trunk-jpl/externalpackages/gmt/install-6.0-mac.sh	(revision 25203)
@@ -0,0 +1,56 @@
+#!/bin/bash
+set -eu
+
+
+## Constants
+#
+VER="6.0.0"
+
+CURL_ROOT="${ISSM_DIR}/externalpackages/curl/install"
+
+# Environment
+#
+export CC=mpicc
+
+# Download source
+$ISSM_DIR/scripts/DownloadExternalPackage.sh "https://issm.ess.uci.edu/files/externalpackages/gmt-${VER}.tar.gz" "gmt-${VER}.tar.gz"
+
+# Unpack source
+tar -zxvf gmt-${VER}.tar.gz
+
+# Cleanup
+rm -rf install src
+mkdir install src
+
+# Move source to 'src' directory
+mv gmt-${VER}/* src
+rm -rf gmt-${VER}
+
+# Copy custom configuration files
+cp ./configs/6.0/linux/cmake/ConfigUser.cmake ./src/cmake
+
+# Configure
+cd src
+mkdir build
+cd build
+
+# NOTE:
+# - There is a CMake variable named CURL_ROOT in src/cmake/ConfigUser.cmake
+#	that, ostensibly, allows for supplying the path to curl when it is in a
+#	non-standard location. That said, newer versions of CMake will ignore said
+#	variable and instead try to find curl itself. Passing in the two options
+#	below overrides this behavior.
+#
+cmake \
+	-DCURL_LIBRARY="${CURL_ROOT}/lib" \
+	-DCURL_INCLUDE_DIR="${CURL_ROOT}/include" \
+	..
+
+# Compile and install
+if [ $# -eq 0 ]; then
+	make
+	make install
+else
+	make -j $1
+	make -j $1 install
+fi