From 8d011eee976962a460bd8ed361ae8cc1b339651e Mon Sep 17 00:00:00 2001
From: James Chang <twmr7@outlook.com>
Date: Sat, 8 Jul 2017 23:03:07 +0800
Subject: [PATCH] [eigen3] fix the missing CMakeLists.txt problem and copy
 additional Eigen directory to include

---
 ports/eigen3/CONTROL        |  2 +-
 ports/eigen3/portfile.cmake | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/ports/eigen3/CONTROL b/ports/eigen3/CONTROL
index 4dd1cd983c..d93fc145a8 100644
--- a/ports/eigen3/CONTROL
+++ b/ports/eigen3/CONTROL
@@ -1,3 +1,3 @@
 Source: eigen3
-Version: 3.3.3-3
+Version: 3.3.3-4
 Description: C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
diff --git a/ports/eigen3/portfile.cmake b/ports/eigen3/portfile.cmake
index ba968950a6..219abadfaf 100644
--- a/ports/eigen3/portfile.cmake
+++ b/ports/eigen3/portfile.cmake
@@ -6,7 +6,14 @@ vcpkg_download_distfile(ARCHIVE
     FILENAME "eigen-3.3.3.tar.bz2"
     SHA512 bb5a8b761371e516f0a344a7c9f6e369e21c2907c8548227933ca6010fc607a66c8d6ff7c41b1aec3dea7d482ce8c2a09e38ae5c7a2c5b16bdd8007e7a81ecc3
 )
+
 vcpkg_extract_source_archive(${ARCHIVE})
+# check if required file exists
+if((NOT EXISTS ${SOURCE_PATH}/Eigen/CMakeLists.txt) OR (NOT EXISTS ${SOURCE_PATH}/unsupported/Eigen/CMakeLists.txt))
+    message(STATUS "Missing CMakeLists.txt in cache, remove ${CURRENT_BUILDTREES_DIR} and try again.")
+    file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}) 
+    vcpkg_extract_source_archive(${ARCHIVE})
+endif()
 
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
@@ -25,6 +32,13 @@ file(READ "${CURRENT_PACKAGES_DIR}/share/eigen3/Eigen3Targets.cmake" EIGEN_TARGE
 string(REPLACE "set(_IMPORT_PREFIX " "get_filename_component(_IMPORT_PREFIX \"\${CMAKE_CURRENT_LIST_DIR}/../..\" ABSOLUTE) #" EIGEN_TARGETS "${EIGEN_TARGETS}")
 file(WRITE "${CURRENT_PACKAGES_DIR}/share/eigen3/Eigen3Targets.cmake" "${EIGEN_TARGETS}")
 
+# Copy the eigen header files to conventional location for user-wide MSBuild integration
+file(COPY ${SOURCE_PATH}/Eigen DESTINATION ${CURRENT_PACKAGES_DIR}/include)
+# and no need to leave CMakeLists.txt there
+if(EXISTS ${CURRENT_PACKAGES_DIR}/include/Eigen/CMakeLists.txt)
+    file(REMOVE ${CURRENT_PACKAGES_DIR}/include/Eigen/CMakeLists.txt)
+endif()
+
 # Put the licence file where vcpkg expects it
 file(COPY ${SOURCE_PATH}/COPYING.README DESTINATION ${CURRENT_PACKAGES_DIR}/share/eigen3)
 file(RENAME ${CURRENT_PACKAGES_DIR}/share/eigen3/COPYING.README ${CURRENT_PACKAGES_DIR}/share/eigen3/copyright)