build: link against libwayland

1 files changed, 11 insertions, 4 deletions

diff --git a/lakefile.lean b/lakefile.lean
index ef12dad..ecee22d 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -2,17 +2,24 @@ import Lean
 import Lake
 open Lake DSL
 
+def evalPkgConfig (args : Array String) : IO (Array String) := do
+  let res ← IO.Process.output { cmd := "pkg-config", args := args }
+  if res.exitCode != 0 then
+    throw <| IO.userError s!"pkg-config failed: {res.stderr}"
+  return res.stdout.split Char.isWhitespace
+    |>.map (String.Slice.toString)
+    |>.filter (· != "")
+    |>.toArray
+
 package «CWayland» {
-  moreLinkArgs := #["-L.lake/build/lib", "-lLibCWayland"]
+  moreLinkArgs := #["-L.lake/build/lib", "-lLibCWayland"] ++ (run_io evalPkgConfig #["--libs", "wayland-client"]).filter (· != "-lm")
   extraDepTargets := #[Lean.Name.mkStr1 "LibCWayland"]
 }
 
 target «LibCWayland.o» pkg : System.FilePath := do
   let objectFile := pkg.buildDir / "LibCWayland.o"
   let srcJob ← inputFile (text := .true) <| pkg.dir / "lib" / "CWayland" / "CWayland.c"
-  -- let cFlags ← captureProc { cmd := "pkg-config", args := #["--cflags", "libwayland-client"] }
-  -- let cFlags := cFlags.splitOn " "
-  let cFlags := #[]
+  let cFlags ← evalPkgConfig #["--cflags", "wayland-client"]
   buildFileAfterDep objectFile srcJob (fun srcFile ↦ do
     let cFlags := cFlags ++ #["-I", (← getLeanIncludeDir).toString, "-I", (← IO.getEnv "C_INCLUDE_PATH").getD "", "-fPIC"]
     compileO objectFile srcFile cFlags)