From cdca983733ff2e59e539130869be6d61c3fc1529 Mon Sep 17 00:00:00 2001
From: tytan652 <tytan652@tytanium.xyz>
Date: Sat, 13 Jan 2024 15:13:57 +0100
Subject: [PATCH] cmake: Skip generate export header if interface in legacy
 path

It backports a behavior from CMake 3.0 to CMake 2.0
---
 cmake/Modules/ObsHelpers.cmake | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/cmake/Modules/ObsHelpers.cmake b/cmake/Modules/ObsHelpers.cmake
index 0a7d25241..b4620ab56 100644
--- a/cmake/Modules/ObsHelpers.cmake
+++ b/cmake/Modules/ObsHelpers.cmake
@@ -251,10 +251,13 @@ function(export_target target)
       COMPONENT obs_libraries
       ${_EXCLUDE})
 
-  include(GenerateExportHeader)
-  generate_export_header(${target} EXPORT_FILE_NAME ${CMAKE_CURRENT_BINARY_DIR}/${target}_EXPORT.h)
+  get_target_property(target_type ${target} TYPE)
+  if(NOT target_type STREQUAL INTERFACE_LIBRARY)
+    include(GenerateExportHeader)
+    generate_export_header(${target} EXPORT_FILE_NAME ${CMAKE_CURRENT_BINARY_DIR}/${target}_EXPORT.h)
 
-  target_sources(${target} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/${target}_EXPORT.h)
+    target_sources(${target} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/${target}_EXPORT.h)
+  endif()
 
   set(TARGETS_EXPORT_NAME "${target}Targets")
   include(CMakePackageConfigHelpers)