From 2a0033aa1fe2f6178004a251d083bd715bb8d61d Mon Sep 17 00:00:00 2001
From: Olivier Prat <olivier@zvork.fr>
Date: Wed, 27 Mar 2019 12:08:06 +0100
Subject: [PATCH] Another try at building on Ubuntu & Mac

---
 cmake/modules/FindOpenEXR.new.cmake | 162 ++++++++++++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 cmake/modules/FindOpenEXR.new.cmake

diff --git a/cmake/modules/FindOpenEXR.new.cmake b/cmake/modules/FindOpenEXR.new.cmake
new file mode 100644
index 0000000000..556946899e
--- /dev/null
+++ b/cmake/modules/FindOpenEXR.new.cmake
@@ -0,0 +1,162 @@
+
+# adapted from FindOpenEXR.cmake in Pixar's USD distro.
+# 
+# The original license is as follows:
+#
+# Copyright 2016 Pixar
+#
+# Licensed under the Apache License, Version 2.0 (the "Apache License")
+# with the following modification; you may not use this file except in
+# compliance with the Apache License and the following modification to it:
+# Section 6. Trademarks. is deleted and replaced with:
+#
+# 6. Trademarks. This License does not grant permission to use the trade
+#    names, trademarks, service marks, or product names of the Licensor
+#    and its affiliates, except as required to comply with Section 4(c) of
+#    the License and to reproduce the content of the NOTICE file.
+#
+# You may obtain a copy of the Apache License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the Apache License with the above modification is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the Apache License for the specific
+# language governing permissions and limitations under the Apache License.
+#
+
+find_path(OPENEXR_INCLUDE_DIR
+    OpenEXR/ImfHeader.h
+
+PATH_SUFFIXES
+    include/
+
+NO_DEFAULT_PATH
+NO_SYSTEM_ENVIRONMENT_PATH
+
+DOC
+    "OpenEXR headers path"
+)
+
+if(OPENEXR_INCLUDE_DIR)
+  set(openexr_config_file "${OPENEXR_INCLUDE_DIR}/OpenEXR/OpenEXRConfig.h")
+  if(EXISTS ${openexr_config_file})
+      file(STRINGS
+           ${openexr_config_file}
+           TMP
+           REGEX "#define OPENEXR_VERSION_STRING.*$")
+      string(REGEX MATCHALL "[0-9.]+" OPENEXR_VERSION ${TMP})
+
+      file(STRINGS
+           ${openexr_config_file}
+           TMP
+           REGEX "#define OPENEXR_VERSION_MAJOR.*$")
+      string(REGEX MATCHALL "[0-9]" OPENEXR_MAJOR_VERSION ${TMP})
+
+      file(STRINGS
+           ${openexr_config_file}
+           TMP
+           REGEX "#define OPENEXR_VERSION_MINOR.*$")
+      string(REGEX MATCHALL "[0-9]" OPENEXR_MINOR_VERSION ${TMP})
+  endif()
+else()
+    message(WARNING, " OpenEXR headers not found")
+endif()
+
+foreach(OPENEXR_LIB
+    IlmImf
+    IlmImfUtil)
+
+    # OpenEXR libraries may be suffixed with the version number, so we search
+    # using both versioned and unversioned names.
+    find_library(OPENEXR_${OPENEXR_LIB}_LIBRARY
+        NAMES
+            ${OPENEXR_LIB}-${OPENEXR_MAJOR_VERSION}_${OPENEXR_MINOR_VERSION}
+            ${OPENEXR_LIB}
+        HINTS
+            "${OPENEXR_LOCATION}"
+            "$ENV{OPENEXR_LOCATION}"
+        PATH_SUFFIXES
+            lib/
+        NO_DEFAULT_PATH
+        NO_SYSTEM_ENVIRONMENT_PATH
+        DOC
+            "OPENEXR's ${OPENEXR_LIB} library path"
+    )
+    #mark_as_advanced(OPENEXR_${OPENEXR_LIB}_LIBRARY)
+
+    if(OPENEXR_${OPENEXR_LIB}_LIBRARY)
+        list(APPEND OPENEXR_LIBRARIES ${OPENEXR_${OPENEXR_LIB}_LIBRARY})
+    endif()
+
+    # OpenEXR libraries may be suffixed with the version number, so we search
+    # using both versioned and unversioned names.
+    find_library(OPENEXR_${OPENEXR_LIB}_DEBUG_LIBRARY
+        NAMES
+            ${OPENEXR_LIB}-${OPENEXR_MAJOR_VERSION}_${OPENEXR_MINOR_VERSION}_d
+            ${OPENEXR_LIB}_d
+        HINTS
+            "${OPENEXR_LOCATION}"
+            "$ENV{OPENEXR_LOCATION}"
+        PATH_SUFFIXES
+            lib/
+            debug/lib/
+        NO_DEFAULT_PATH
+        NO_SYSTEM_ENVIRONMENT_PATH
+        DOC
+            "OPENEXR's ${OPENEXR_LIB} debug library path"
+    )
+    #mark_as_advanced(OPENEXR_${OPENEXR_LIB}_DEBUG_LIBRARY)
+
+    # OpenEXR libraries may be suffixed with the version number, so we search
+    # using both versioned and unversioned names.
+    find_library(OPENEXR_${OPENEXR_LIB}_STATIC_LIBRARY
+        NAMES
+            ${OPENEXR_LIB}-${OPENEXR_MAJOR_VERSION}_${OPENEXR_MINOR_VERSION}_s
+            ${OPENEXR_LIB}_s
+        HINTS
+            "${OPENEXR_LOCATION}"
+            "$ENV{OPENEXR_LOCATION}"
+        PATH_SUFFIXES
+            lib/
+        NO_DEFAULT_PATH
+        NO_SYSTEM_ENVIRONMENT_PATH
+        DOC
+            "OPENEXR's ${OPENEXR_LIB} static library path"
+    )
+    #mark_as_advanced(OPENEXR_${OPENEXR_LIB}_STATIC_LIBRARY)
+
+    # OpenEXR libraries may be suffixed with the version number, so we search
+    # using both versioned and unversioned names.
+    find_library(OPENEXR_${OPENEXR_LIB}_STATIC_DEBUG_LIBRARY
+        NAMES
+            ${OPENEXR_LIB}-${OPENEXR_MAJOR_VERSION}_${OPENEXR_MINOR_VERSION}_s_d
+            ${OPENEXR_LIB}_s_d
+        HINTS
+            "${OPENEXR_LOCATION}"
+            "$ENV{OPENEXR_LOCATION}"
+        PATH_SUFFIXES
+            lib/
+            debug/lib/
+        NO_DEFAULT_PATH
+        NO_SYSTEM_ENVIRONMENT_PATH
+        DOC
+            "OPENEXR's ${OPENEXR_LIB} static debug library path"
+    )
+    #mark_as_advanced(OPENEXR_${OPENEXR_LIB}_STATIC_DEBUG_LIBRARY)
+
+endforeach(OPENEXR_LIB)
+
+# So #include <half.h> works
+list(APPEND OPENEXR_INCLUDE_DIRS ${OPENEXR_INCLUDE_DIR})
+list(APPEND OPENEXR_INCLUDE_DIRS ${OPENEXR_INCLUDE_DIR}/OpenEXR)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(OpenEXR
+    REQUIRED_VARS
+        OPENEXR_INCLUDE_DIRS
+        OPENEXR_LIBRARIES
+    VERSION_VAR
+        OPENEXR_VERSION
+)