From 8fd08ef4ac41edca59ca03ba39924ad5e4f4dbb6 Mon Sep 17 00:00:00 2001
From: Matthias Hochsteger <mhochsteger@cerbsim.com>
Date: Wed, 11 Mar 2020 21:30:43 +0100
Subject: [PATCH] Download prebuilt CGNS library on MacOS

---
 .gitlab-ci.yml                     |  1 +
 CMakeLists.txt                     |  4 ++--
 cmake/SuperBuild.cmake             | 13 ++++++-------
 cmake/external_projects/cgns.cmake | 15 +++++++++++++++
 4 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dc4d724e..c50d4eb0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -243,6 +243,7 @@ build_mac:
         -DENABLE_UNIT_TESTS=ON
         -DCMAKE_OSX_DEPLOYMENT_TARGET=10.12
         -DCMAKE_OSX_SYSROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
+        -DUSE_CGNS=ON
         -DUSE_OCC=ON
         -DOCC_LIBRARY=/usr/local/opt/opencascade-7.4.0/lib/libTKernel.a
         -DOCC_INCLUDE_DIR=/usr/local/opt/opencascade-7.4.0/include/opencascade
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3f26e0dd..fa5450aa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -396,10 +396,10 @@ if(USE_CGNS)
     target_compile_definitions(netgen_cgns INTERFACE NG_CGNS)
     target_include_directories(netgen_cgns INTERFACE ${CGNS_INCLUDE_DIR})
     target_link_libraries(netgen_cgns INTERFACE ${CGNS_LIBRARY})
-    if(NOT WIN32) # hdf5 is statically linked into cgns in Windows binaries
+    if(NOT WIN32 AND NOT APPLE) # hdf5 is statically linked into cgns in Windows amd MacOS binaries
         find_library(HDF5_LIBRARY NAMES hdf5 hdf5_serial)
         target_link_libraries(netgen_cgns INTERFACE ${HDF5_LIBRARY})
-    endif(NOT WIN32)
+    endif(NOT WIN32 AND NOT APPLE)
 endif(USE_CGNS)
 
 add_subdirectory(libsrc)
diff --git a/cmake/SuperBuild.cmake b/cmake/SuperBuild.cmake
index 36232df2..e28c034b 100644
--- a/cmake/SuperBuild.cmake
+++ b/cmake/SuperBuild.cmake
@@ -15,13 +15,12 @@ macro(set_vars VAR_OUT)
   endforeach()
 endmacro()
 #######################################################################
-if(WIN32)
-  set (DEPS_DOWNLOAD_URL "https://github.com/NGSolve/ngsolve_dependencies/releases/download/v1.0.0" CACHE STRING INTERNAL)
-  set (OCC_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/occ_win64.zip" CACHE STRING INTERNAL)
-  set (TCLTK_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/tcltk_win64.zip" CACHE STRING INTERNAL)
-  set (ZLIB_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/zlib_win64.zip" CACHE STRING INTERNAL)
-  set (CGNS_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/cgns_win64.zip" CACHE STRING INTERNAL)
-endif(WIN32)
+set (DEPS_DOWNLOAD_URL "https://github.com/NGSolve/ngsolve_dependencies/releases/download/v1.0.0" CACHE STRING INTERNAL)
+set (OCC_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/occ_win64.zip" CACHE STRING INTERNAL)
+set (TCLTK_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/tcltk_win64.zip" CACHE STRING INTERNAL)
+set (ZLIB_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/zlib_win64.zip" CACHE STRING INTERNAL)
+set (CGNS_DOWNLOAD_URL_WIN "${DEPS_DOWNLOAD_URL}/cgns_win64.zip" CACHE STRING INTERNAL)
+set (CGNS_DOWNLOAD_URL_MAC "${DEPS_DOWNLOAD_URL}/cgns_mac.zip" CACHE STRING INTERNAL)
 
 if(UNIX)
   message("Checking for write permissions in install directory...")
diff --git a/cmake/external_projects/cgns.cmake b/cmake/external_projects/cgns.cmake
index fa5fce72..f7e74987 100644
--- a/cmake/external_projects/cgns.cmake
+++ b/cmake/external_projects/cgns.cmake
@@ -13,3 +13,18 @@ if(WIN32)
   list(APPEND NETGEN_DEPENDENCIES project_win_cgns)
 endif(WIN32)
 
+if(APPLE)
+  ExternalProject_Add(project_mac_cgns
+    URL ${CGNS_DOWNLOAD_URL_MAC}
+    UPDATE_COMMAND "" # Disable update
+    BUILD_IN_SOURCE 1
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND ""
+    INSTALL_COMMAND ${CMAKE_COMMAND} -E copy_directory . ${CMAKE_INSTALL_PREFIX}
+    LOG_DOWNLOAD 1
+    )
+
+  list(APPEND NETGEN_DEPENDENCIES project_mac_cgns)
+  list(APPEND NETGEN_CMAKE_ARGS "-DCGNS_INCLUDE_DIR=${CMAKE_INSTALL_PREFIX}/Contents/Resources/include")
+  list(APPEND NETGEN_CMAKE_ARGS "-DCGNS_LIBRARY=${CMAKE_INSTALL_PREFIX}/Contents/MacOS/libcgns.dylib")
+endif(APPLE)