From eaa35ea07e004e62b00eb710b9c3c7e4b5f0d0fe Mon Sep 17 00:00:00 2001
From: Guilhem Lavaux <guilhem.lavaux@laposte.net>
Date: Wed, 31 Oct 2012 14:50:41 -0400
Subject: [PATCH] Build python dependencies: Python, NetCDF4

---
 external/external_python_build.cmake | 54 ++++++++++++++++++++++++++++
 external/python_build.cmake          |  6 ++++
 external/python_install.cmake        |  5 +++
 3 files changed, 65 insertions(+)
 create mode 100644 external/external_python_build.cmake
 create mode 100644 external/python_build.cmake
 create mode 100644 external/python_install.cmake

diff --git a/external/external_python_build.cmake b/external/external_python_build.cmake
new file mode 100644
index 0000000..86de2cb
--- /dev/null
+++ b/external/external_python_build.cmake
@@ -0,0 +1,54 @@
+INCLUDE(FindPythonInterp)
+
+SET(INTERNAL_NETCDF4_PYTHON ON)
+SET(INTERNAL_CYTHON ON)
+
+
+IF(INTERNAL_CYTHON)
+  SET(CYTHON_URL "http://cython.org/release/Cython-0.17.1.tar.gz" CACHE STRING "URL to download Cython from")
+ENDIF(INTERNAL_CYTHON)
+
+IF(INTERNAL_NETCDF4_PYTHON)
+  SET(NETCDF4_PYTHON_URL "http://netcdf4-python.googlecode.com/files/netCDF4-1.0.1.tar.gz" CACHE STRING "URL to download NetCDF4-python from")
+ENDIF(INTERNAL_NETCDF4_PYTHON)
+
+
+
+
+
+IF(INTERNAL_CYTHON)
+  ExternalProject_Add(cython
+    DEPENDS ${PREV_PYTHON_BUILD}
+    URL ${CYTHON_URL}
+    PREFIX ${BUILD_PREFIX}/cython-prefix
+    CONFIGURE_COMMAND echo "No configure"
+    BUILD_IN_SOURCE 1
+    BUILD_COMMAND ${PYTHON_EXECUTABLE} setup.py build
+    INSTALL_COMMAND ${PYTHON_EXECUTABLE} setup.py install --prefix=${CMAKE_BINARY_DIR}/ext_build/python
+  ) 
+  SET(PREV_PYTHON_BUILD ${PREV_PYTHON_BUILD} cython)
+ENDIF(INTERNAL_CYTHON)
+
+
+IF(INTERNAL_NETCDF4_PYTHON)
+  SET(PYTHON_CPPFLAGS -I${NETCDF_INCLUDE_PATH})
+  SET(PYTHON_LDFLAGS -L${NETCDF_BIN_DIR}/lib)
+  SET(BUILD_ENVIRONMENT 
+          ${CMAKE_COMMAND}
+           "-DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}"
+           "-DPYTHON_CPPFLAGS:STRING=${PYTHON_CPPFLAGS}"
+           "-DHDF5_DIR=${HDF5_BIN_DIR}"
+           "-DNETCDF4_DIR=${NETCDF_BIN_DIR}"
+           "-DPYTHON_LDFLAGS:STRING=${PYTHON_LDFLAGS}"
+           "-DTARGET_PATH=${CMAKE_BINARY_DIR}/ext_build/python" "-P") 
+
+  ExternalProject_Add(netcdf4-python
+    DEPENDS ${PREV_PYTHON_BUILD}
+    URL ${NETCDF4_PYTHON_URL}
+    PREFIX ${BUILD_PREFIX}/netcdf4-python-prefix
+    CONFIGURE_COMMAND echo "No configure" 
+    BUILD_IN_SOURCE 1
+    BUILD_COMMAND ${BUILD_ENVIRONMENT}  ${CMAKE_SOURCE_DIR}/external/python_build.cmake
+    INSTALL_COMMAND ${BUILD_ENVIRONMENT} ${CMAKE_SOURCE_DIR}/external/python_install.cmake
+  )
+ENDIF(INTERNAL_NETCDF4_PYTHON)
diff --git a/external/python_build.cmake b/external/python_build.cmake
new file mode 100644
index 0000000..0d1b968
--- /dev/null
+++ b/external/python_build.cmake
@@ -0,0 +1,6 @@
+SET(ENV{HDF5_DIR} ${HDF5_DIR})
+SET(ENV{NETCDF4_DIR} ${NETCDF4_DIR})
+SET(ENV{CPPFLAGS} ${PYTHON_CPPFLAGS})
+SET(ENV{LDFLAGS} ${PYTHON_LDFLAGS})
+SET(ENV{PYTHONPATH} ${TARGET_PATH}/lib/python2.7/site-packages:$ENV{PYTHONPATH})
+execute_process(COMMAND ${PYTHON_EXECUTABLE} setup.py build)
diff --git a/external/python_install.cmake b/external/python_install.cmake
new file mode 100644
index 0000000..fa40226
--- /dev/null
+++ b/external/python_install.cmake
@@ -0,0 +1,5 @@
+SET(ENV{HDF5_DIR} ${HDF5_DIR})
+SET(ENV{NETCDF4_DIR} ${NETCDF4_DIR})
+SET(ENV{CPPFLAGS} ${PYTHON_CPPFLAGS})
+SET(ENV{LDFLAGS} ${PYTHON_LDFLAGS})
+execute_process(COMMAND ${PYTHON_EXECUTABLE} setup.py install --prefix=${TARGET_PATH})