fix backtrace detection in CMake

works on arch (glibc) and void linux (tested with musl libc) now

1 files changed, 7 insertions, 1 deletions

diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 95617e15..38767249 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_library(sway-common
-        ${SWAY_Backtrace_HEADER}
         ipc-client.c
         list.c
         log.c
@@ -7,3 +6,10 @@ add_library(sway-common
         readline.c
         stringop.c
         )
+
+if(Backtrace_FOUND)
+        set_target_properties(sway-common
+                PROPERTIES
+                COMPILE_FLAGS "-include ${Backtrace_HEADER}"
+                )
+endif()