From b12fde65d81b2a43ec04fdf5b3952a2efbca50d4 Mon Sep 17 00:00:00 2001
From: Ryan Burns <rtburns-jpl@users.noreply.github.com>
Date: Thu, 28 May 2020 17:51:13 -0700
Subject: [PATCH] Add PyCuAmpcor support

---
 CMakeLists.txt                    |  3 +-
 contrib/CMakeLists.txt            |  2 +-
 contrib/PyCuAmpcor/CMakeLists.txt | 47 +++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+), 2 deletions(-)
 create mode 100644 contrib/PyCuAmpcor/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3292dc4..1b857f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,8 @@ endif()
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/.cmake)
 
-find_package(Python 3.5 REQUIRED COMPONENTS Interpreter Development)
+find_package(Python 3.5 REQUIRED COMPONENTS Interpreter Development
+                        OPTIONAL_COMPONENTS NumPy)
 find_package(FFTW REQUIRED)
 find_package(Motif)
 find_package(OpenMP REQUIRED COMPONENTS C CXX Fortran)
diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index 4b8ba1e..e1c8031 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -5,7 +5,7 @@ add_subdirectory(frameUtils)
 #add_subdirectory(unwUtils)
 add_subdirectory(downsample_unwrapper)
 
-#add_subdirectory(PyCuAmpcor)
+add_subdirectory(PyCuAmpcor)
 add_subdirectory(splitSpectrum)
 add_subdirectory(alos2filter)
 add_subdirectory(alos2proc)
diff --git a/contrib/PyCuAmpcor/CMakeLists.txt b/contrib/PyCuAmpcor/CMakeLists.txt
new file mode 100644
index 0000000..93a08ad
--- /dev/null
+++ b/contrib/PyCuAmpcor/CMakeLists.txt
@@ -0,0 +1,47 @@
+# Early exit if prereqs not available
+if(NOT CMAKE_CUDA_COMPILER OR
+   NOT TARGET GDAL::GDAL OR
+   NOT TARGET Python::NumPy)
+    return()
+endif()
+
+set(CMAKE_CUDA_STANDARD 11)
+set(CMAKE_CUDA_STANDARD_REQUIRED TRUE)
+
+cython_add_module(PyCuAmpcor
+    src/PyCuAmpcor.pyx
+    src/GDALImage.cu
+    src/SConscript
+    src/SlcImage.cu
+    src/cuAmpcorChunk.cu
+    src/cuAmpcorController.cu
+    src/cuAmpcorParameter.cu
+    src/cuArrays.cu
+    src/cuArraysCopy.cu
+    src/cuArraysPadding.cu
+    src/cuCorrFrequency.cu
+    src/cuCorrNormalization.cu
+    src/cuCorrTimeDomain.cu
+    src/cuDeramp.cu
+    src/cuEstimateStats.cu
+    src/cuOffset.cu
+    src/cuOverSampler.cu
+    src/cuSincOverSampler.cu
+    )
+target_include_directories(PyCuAmpcor PRIVATE
+    src
+    ${CMAKE_CUDA_IMPLICIT_INCLUDE_DIRECTORIES} # <cuda_runtime.h>
+    )
+target_link_directories(PyCuAmpcor PRIVATE
+    ${CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES} # cufft
+    )
+target_link_libraries(PyCuAmpcor PRIVATE
+    GDAL::GDAL
+    Python::NumPy
+    cufft
+    )
+
+InstallSameDir(
+    __init__.py
+    PyCuAmpcor
+    )