feat: added flake.nix

flake.nix

@@ -0,0 +1,57 @@
+{
+  description = "Flake utils demo";
+
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem (
+      system: let
+        pkgs = nixpkgs.legacyPackages.${system};
+        llvm = pkgs.llvm_18;
+        funcheck_drv = pkgs.stdenv.mkDerivation (final: {
+          pname = "funcheck";
+          version = "1.1.4";
+          src = ./.;
+          nativeBuildInputs = [pkgs.makeWrapper pkgs.minilibx pkgs.gnumake pkgs.xorg.libX11];
+          buildInputs = [llvm];
+          buildPhase = ''
+            substituteInPlace host/srcs/run/runner.c \
+             --replace-fail "../library/libfuncheck.so" ""
+
+            # TODO: remove this when I take time to check wtf is happening
+
+            echo "" >library/srcs/hook/functions/stdio.c
+            export CFLAGS="-Werror -Wextra -Wall -Wno-stringop-truncation \
+            -Wno-attributes -Wno-array-parameter -Wno-unused-result \
+            -DABSOLUTE_LIBRARY_PATH=\\\"$out/share/funcheck/libfuncheck.so\\\" \
+            -g -fPIC -fvisibility=hidden"
+            make -C library "CC=$CC" "CFLAGS=$CFLAGS" "VERSION=${final.version}-nix"
+            make -C host    "CC=$CC" "CFLAGS=$CFLAGS" "VERSION=${final.version}-nix"
+          '';
+          installPhase = ''
+            mkdir -p "$out/bin"
+            mkdir -p "$out/share/funcheck"
+            cp ./host/funcheck "$out/bin/funcheck"
+            cp ./library/libfuncheck.so "$out/share/funcheck/libfuncheck.so"
+            wrapProgram $out/bin/funcheck \
+              --prefix PATH : ${pkgs.lib.makeBinPath [llvm]}
+          '';
+        });
+      in {
+        packages = rec {
+          funcheck = default;
+          default = funcheck_drv;
+        };
+        apps = rec {
+          funcheck = flake-utils.lib.mkApp {drv = self.packages.${system}.funcheck;};
+          default = funcheck;
+        };
+      }
+    );
+}

host/srcs/run/runner.c

@@ -33,6 +33,8 @@
 
 #define RELATIVE_LIBRARY_PATH "../library/libfuncheck.so"
 
+#ifndef ABSOLUTE_LIBRARY_PATH
+
 /**
  * @brief Get the absolute path of the library
  * 
@@ -62,6 +64,22 @@ static char *get_library_path(void)
     return path;
 }
 
+#else
+
+/**
+ * @brief Get the absolute path of the library
+ * 
+ * @return char* the absolute path of the library
+ * @note Why does this exists ? Because if the packaging needs to force 
+ * 	an library path to be absolute it is needed
+ */
+static char *get_library_path(void)
+{
+	return ABSOLUTE_LIBRARY_PATH;
+}
+
+#endif
+
 /**
  * @brief Generate resources for the runner
  * 
@@ -166,4 +184,4 @@ int run(t_run_info *run_info)
 		}
 	}
 	return pid;
-}
+}