Remove GCC marning

libplum/libplum.nim

@@ -12,14 +12,18 @@ const
   rootPath = currentSourcePath.parentDir().parentDir().replace('\\', '/')
   libplumPath = rootPath & "/vendor/libplum"
   includePath = libplumPath & "/include/plum"
-  libraryPath = libplumPath & "/build/libplum.a"
+  libraryPath = libplumPath & "/libplum.a"
 {.passc: "-I" & includePath & " -DPLUM_STATIC".}
 {.passl: libraryPath.}
 # libplum declares some parameters as `const T*` in C (read-only pointer).
 # Nim has no equivalent, so the generated C code drops the `const`, causing
-# a type mismatch warning in GCC 15+. This flag suppresses that warning.
-# It is safe because we never write through those pointers.
-{.passc: "-Wno-incompatible-pointer-types".}
+# a type mismatch warning in GCC 15+. This pragma suppresses that warning
+# only in this translation unit and is valid for both C and C++.
+{.emit: """
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wno-incompatible-pointer-types"
+#endif
+""".}
 
 when defined(windows):
   {.passl: "-lws2_32 -liphlpapi -lbcrypt".}

libplum/plum.nim

@@ -12,6 +12,12 @@ import chronos/threadsync
 import results
 import ./libplum
 
+{.emit: """
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wincompatible-pointer-types"
+#endif
+""".}
+
 export results
 
 {.pragma: callback, cdecl, raises: [], gcsafe.}