cmake: use CMAKE_INSTALL_INCLUDEDIR indirection

Reviewed-by: Sergei Nikulov
Closes #6440

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index f6c364239920900688c322eb29444673bd002851..986a74f7f6c068484d2d5921456840e430aebf3a 100644 (file)
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -126,7 +126,7 @@ if(WIN32)
 endif()
 
 target_include_directories(${LIB_NAME} INTERFACE
-  $<INSTALL_INTERFACE:include>
+  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
   $<BUILD_INTERFACE:${CURL_SOURCE_DIR}/include>)
 
 install(TARGETS ${LIB_NAME}