gmt 5.1.1

Add conflicts_with GMT 4, provided by gmt4 formula.
GMT build system has now moved to cmake.

Closes #473.

gmt.rb

@@ -2,33 +2,67 @@
 
 class Gmt < Formula
   homepage 'http://gmt.soest.hawaii.edu/'
-  url 'ftp://ftp.soest.hawaii.edu/gmt/gmt-4.5.12-src.tar.bz2'
-  sha1 'a5ce7419a1aeb523540d2f93ca62153e47ce72fc'
+  url 'ftp://ftp.soest.hawaii.edu/gmt/gmt-5.1.1-src.tar.bz2'
+  sha1 'ff64936dfdec8a57a89d29f505f27e435169d33f'
 
+  depends_on 'cmake' => :build
   depends_on 'gdal'
   depends_on 'netcdf'
+  depends_on 'fftw'
+  depends_on 'pcre'
+
+  conflicts_with 'gmt4', :because => 'Both versions install the same binaries.'
 
   resource 'gshhg' do
     url 'ftp://ftp.soest.hawaii.edu/gmt/gshhg-gmt-2.3.0.tar.gz'
     sha1 'eb62a0a9bceee4297055be18b8727b603cd0e9cb'
   end
 
+  resource 'dcw' do
+    url 'ftp://ftp.soest.hawaii.edu/gmt/dcw-gmt-1.1.1.tar.gz'
+    sha1 'deca85f21426604c8574a18d16c931a1fd9ae27b'
+  end
+
   def install
-    ENV.deparallelize # Parallel builds don't work due to missing makefile dependencies
-    datadir = share/name
-    system "./configure", "--prefix=#{prefix}",
-                          "--datadir=#{datadir}",
-                          "--enable-gdal=#{HOMEBREW_PREFIX}",
-                          "--enable-netcdf=#{HOMEBREW_PREFIX}",
-                          "--enable-shared",
-                          "--enable-triangle",
-                          "--disable-xgrid",
-                          "--disable-mex"
-    system "make"
-    system "make install-gmt"
-    system "make install-data"
-    system "make install-suppl"
-    system "make install-man"
-    datadir.install resource('gshhg')
+    gshhgdir = buildpath/'gshhg'
+    dcwdir = buildpath/'dcw'
+    args = std_cmake_args.concat %W[
+      -DCMAKE_INSTALL_PREFIX=#{prefix}
+      -DGMT_INSTALL_TRADITIONAL_FOLDERNAMES:BOOL=FALSE
+      -DGMT_INSTALL_MODULE_LINKS:BOOL=TRUE
+      -DGMT_DOCDIR=#{share}/doc/gmt
+      -DGMT_MANDIR=#{man}
+      -DGSHHG_ROOT=#{gshhgdir}
+      -DCOPY_GSHHG:BOOL=TRUE
+      -DDCW_ROOT=#{dcwdir}
+      -DCOPY_DCW:BOOL=TRUE
+      -DNETCDF_ROOT=#{HOMEBREW_PREFIX}
+      -DGDAL_ROOT=#{HOMEBREW_PREFIX}
+      -DPCRE_ROOT=#{HOMEBREW_PREFIX}
+      -DFFTW3_ROOT=#{HOMEBREW_PREFIX}
+      -DLICENSE_RESTRICTED:BOOL=FALSE
+      -DFLOCK:BOOL=TRUE
+    ]
+    Dir.mkdir 'build'
+    Dir.chdir 'build' do
+      gshhgdir.install resource('gshhg')
+      dcwdir.install resource('dcw')
+      system 'cmake', '..', *args
+      system 'make install'
+    end
+  end
+
+  def caveats; <<-EOS.undent
+      GMT 5 is mostly (but not 100%) compatible with previous versions.
+      Moreover, the compatibility mode is expected to exist only during a
+      transitional period.
+
+      If you want to continue using GMT 4:
+      `brew install gmt4`
+
+      We agreed to the `triangle` license
+      (http://www.cs.cmu.edu/~quake/triangle.html) for you.
+      If this is unacceptable you should uninstall.
+    EOS
   end
 end