From 61b70bdb337674691c01c6dd2d72132a95c0dee8 Mon Sep 17 00:00:00 2001
From: Chris Kulla <ckulla@gmail.com>
Date: Mon, 29 Apr 2024 22:59:39 -0700
Subject: [PATCH] Use FetchContent for robin-map

Signed-off-by: Chris Kulla <ckulla@gmail.com>
---
 src/cmake/externalpackages.cmake | 10 ++++++++--
 src/liboslexec/CMakeLists.txt    |  4 ++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/cmake/externalpackages.cmake b/src/cmake/externalpackages.cmake
index 4bec07bf3..9a85e8f84 100644
--- a/src/cmake/externalpackages.cmake
+++ b/src/cmake/externalpackages.cmake
@@ -30,14 +30,20 @@ message (STATUS "CMAKE_PREFIX_PATH = ${CMAKE_PREFIX_PATH}")
 
 
 include (ExternalProject)
+include(FetchContent)
 
 option (BUILD_MISSING_DEPS "Try to download and build any missing dependencies" OFF)
 
+FetchContent_Declare(
+  tsl-robin-map
+  GIT_REPOSITORY https://github.com/Tessil/robin-map.git
+  GIT_TAG        v1.3.0
+  FIND_PACKAGE_ARGS NAMES tsl-robin-map
+)
+FetchContent_MakeAvailable(tsl-robin-map)
 
 checked_find_package (ZLIB REQUIRED)  # Needed by several packages
 
-checked_find_package(tsl-robin-map REQUIRED)
-
 # IlmBase & OpenEXR
 checked_find_package (OpenEXR REQUIRED
                       VERSION_MIN 2.4
diff --git a/src/liboslexec/CMakeLists.txt b/src/liboslexec/CMakeLists.txt
index ee59d9d1b..86402c034 100644
--- a/src/liboslexec/CMakeLists.txt
+++ b/src/liboslexec/CMakeLists.txt
@@ -517,6 +517,8 @@ foreach(batched_target ${BATCHED_TARGET_LIST})
         PUBLIC
             ${CMAKE_INSTALL_FULL_INCLUDEDIR}
             ${IMATH_INCLUDES}
+        PRIVATE
+            ${tsl-robin-map_INCLUDE_DIRS}
         )
     target_link_libraries (${batched_target_lib}
         PUBLIC
@@ -535,6 +537,7 @@ target_include_directories (${local_lib}
         ${CMAKE_INSTALL_FULL_INCLUDEDIR}
         ${IMATH_INCLUDES}
     PRIVATE
+        ${tsl-robin-map_INCLUDE_DIRS}
         "${CMAKE_SOURCE_DIR}/src/liboslcomp"
     )
 target_compile_definitions (${local_lib}
@@ -580,6 +583,7 @@ target_link_libraries (${local_lib}
         ${ILMBASE_LIBRARIES}
     PRIVATE
         pugixml::pugixml
+        tsl::robin_map
         ${CMAKE_DL_LIBS}
         ${CLANG_LIBRARIES}
         ${LLVM_LIBRARIES} ${LLVM_LDFLAGS} ${LLVM_SYSTEM_LIBRARIES}