https://github.com/trahay/LiTL/pull/2

commit b57328c06aa0919fdca8673999d45df20a10be6f
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Wed Apr 2 00:14:20 2025 +0200

    Fix header installation
    
    There is no need to specify targets, these are already the defaults.
    
    But GNUInstallDirs needs to be included to get the proper default
    values.

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f534688..9abfbfd 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -45,9 +45,8 @@ SET(LITL_HEADERS
 
 set_target_properties(litl PROPERTIES PUBLIC_HEADER "${LITL_HEADERS}")
 
+include(GNUInstallDirs)
 
 install(
     TARGETS litl
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
