From 333ab8dc02591bab830aa61558607121738722ca Mon Sep 17 00:00:00 2001
From: Janusz Lisiecki <jlisiecki@nvidia.com>
Date: Thu, 3 Aug 2023 14:53:22 +0200
Subject: [PATCH] Make CV-CUDA buildable for Jetson

- libcudart on Jetson (CUDA 11.8) requires shm_open symbol which
  is provided by librt, without it linker complains about a missing
  symbol. This PR makes sure that whenever libcudart is linked -lrt
  linker flag is added as well

Signed-off-by: Janusz Lisiecki <jlisiecki@nvidia.com>
---
 python/mod_cvcuda/CMakeLists.txt      | 1 +
 python/mod_nvcv/CMakeLists.txt        | 1 +
 src/cvcuda/CMakeLists.txt             | 1 +
 src/cvcuda/priv/CMakeLists.txt        | 1 +
 src/cvcuda/priv/legacy/CMakeLists.txt | 1 +
 src/nvcv_types/priv/CMakeLists.txt    | 1 +
 src/util/CMakeLists.txt               | 1 +
 tests/CMakeLists.txt                  | 1 +
 8 files changed, 8 insertions(+)

diff --git a/python/mod_cvcuda/CMakeLists.txt b/python/mod_cvcuda/CMakeLists.txt
index 919ca2af..466aa6b1 100644
--- a/python/mod_cvcuda/CMakeLists.txt
+++ b/python/mod_cvcuda/CMakeLists.txt
@@ -75,6 +75,7 @@ target_link_libraries(cvcuda_module_python
         nvcv_util_compat
         cvcuda
         nvcv_python_common
+        -lrt
 )
 
 set_target_properties(cvcuda_module_python PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/python)
diff --git a/python/mod_nvcv/CMakeLists.txt b/python/mod_nvcv/CMakeLists.txt
index b92c676d..519eb37c 100644
--- a/python/mod_nvcv/CMakeLists.txt
+++ b/python/mod_nvcv/CMakeLists.txt
@@ -79,6 +79,7 @@ target_link_libraries(nvcv_module_python
         nvcv_python_common
         CUDA::cudart_static
         dlpack::dlpack
+        -lrt
 )
 
 add_library(pynvcv INTERFACE)
diff --git a/src/cvcuda/CMakeLists.txt b/src/cvcuda/CMakeLists.txt
index 891330c3..9e2dcd61 100644
--- a/src/cvcuda/CMakeLists.txt
+++ b/src/cvcuda/CMakeLists.txt
@@ -61,6 +61,7 @@ target_link_libraries(cvcuda
     PUBLIC
         CUDA::cudart_static
         nvcv_types
+        -lrt
     PRIVATE
         nvcv_util
         nvcv_util_symver
diff --git a/src/cvcuda/priv/CMakeLists.txt b/src/cvcuda/priv/CMakeLists.txt
index 2b73f905..a9c25d4a 100644
--- a/src/cvcuda/priv/CMakeLists.txt
+++ b/src/cvcuda/priv/CMakeLists.txt
@@ -64,4 +64,5 @@ target_link_libraries(cvcuda_priv
         nvcv_util_sanitizer
         cvcuda_legacy
         CUDA::cudart_static
+        -lrt
 )
diff --git a/src/cvcuda/priv/legacy/CMakeLists.txt b/src/cvcuda/priv/legacy/CMakeLists.txt
index ead5d515..dc6c0c68 100644
--- a/src/cvcuda/priv/legacy/CMakeLists.txt
+++ b/src/cvcuda/priv/legacy/CMakeLists.txt
@@ -81,4 +81,5 @@ target_link_libraries(cvcuda_legacy
         nvcv_types
         nvcv_util
         cvcuda_headers
+        -lrt
 )
diff --git a/src/nvcv_types/priv/CMakeLists.txt b/src/nvcv_types/priv/CMakeLists.txt
index ed795a10..92b28a78 100644
--- a/src/nvcv_types/priv/CMakeLists.txt
+++ b/src/nvcv_types/priv/CMakeLists.txt
@@ -48,4 +48,5 @@ target_link_libraries(nvcv_types_priv
         nvcv_types_headers
         nvcv_util_sanitizer
         CUDA::cudart_static
+        -lrt
 )
diff --git a/src/util/CMakeLists.txt b/src/util/CMakeLists.txt
index 8ed65867..b500f0ab 100644
--- a/src/util/CMakeLists.txt
+++ b/src/util/CMakeLists.txt
@@ -190,6 +190,7 @@ target_link_libraries(nvcv_util
         nvcv_types_headers
         CUDA::cudart_static
         nvcv_util_compat
+        -lrt
 )
 
 target_compile_definitions(nvcv_util
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index e7cc7ace..de95135c 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -30,6 +30,7 @@ target_link_libraries(nvcv_test_main
     PRIVATE
         nvcv_types
         CUDA::cudart_static
+        -lrt
 )
 
 # Now we want to create a script in the output directory that will run