feat: added flake.nix

README.md

@@ -67,6 +67,16 @@ If you you want to update the tool, you can run the same command.
 
 You can now use the `funcheck` command. (run `funcheck --help` for more information how to use it)
 
+## Nix flake support
+
+If you have the nix package manager installed, you can run funcheck using this command
+
+```bash
+nix nix --extra-experimental-features "flakes nix-command" run github:froz42/funcheck
+```
+
+this will build funcheck onto your machine, and install llvm-symbolizer (thought it will use the one in your `PATH` by default)
+
 ## Build instructions
 
 ### Requirements

flake.nix

@@ -0,0 +1,76 @@
+{
+  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.${system};
+        llvm = pkgs.llvm_18;
+        #commit = pkgs.lib.removeSuffix "-dirty" self.dirtyShortRev;
+        commit = builtins.substring 0 12 (pkgs.lib.removeSuffix "-dirty" self.dirtyRev);
+        funcheck_drv = pkgs.stdenv.mkDerivation (final: {
+          pname = "funcheck";
+          version = commit;
+          src = ./.;
+          patches = [
+            (
+              builtins.toFile
+              "remove_fwrite_unlocked.patch"
+              ''
+                diff --git a/library/srcs/hook/functions/stdio.c b/library/srcs/hook/functions/stdio.c
+                index dbb9e2a..2d6b9dd 100644
+                --- a/library/srcs/hook/functions/stdio.c
+                +++ b/library/srcs/hook/functions/stdio.c
+                @@ -104,7 +104,7 @@ DEFINE_HOOK_FUNCTION(size_t, fwrite, EIO, 0, const void *, ptr, size_t, size, si
+
+                 DEFINE_HOOK_FUNCTION(int, fputs_unlocked, EIO, 0, const char *, s, FILE *, stream);
+                 DEFINE_HOOK_FUNCTION(size_t, fread_unlocked, EIO, 0, void *, ptr, size_t, size, size_t, nmemb, FILE *, stream);
+                -DEFINE_HOOK_FUNCTION(size_t, fwrite_unlocked, EIO, 0, const void *, ptr, size_t, size, size_t, nmemb, FILE *, stream);
+                +//DEFINE_HOOK_FUNCTION(size_t, fwrite_unlocked, EIO, 0, const void *, ptr, size_t, size, size_t, nmemb, FILE *, stream);
+
+                 DEFINE_HOOK_FUNCTION(int, fseek, EIO, -1, FILE *, stream, long, offset, int, whence);
+                 DEFINE_HOOK_FUNCTION(long, ftell, EIO, -1, FILE *, stream);
+
+              ''
+            )
+          ];
+          nativeBuildInputs = [pkgs.makeWrapper pkgs.minilibx pkgs.gnumake pkgs.xorg.libX11];
+          buildInputs = [llvm];
+          buildPhase = ''
+            ls -la
+            export CFLAGS="-Werror -Wextra -Wall -Wno-stringop-truncation \
+            -Wno-attributes -Wno-array-parameter -Wno-unused-result \
+            -DABSOLUTE_LIBRARY_PATH=\\\"$out/share/funcheck/libfuncheck.so\\\" \
+            -g -fPIC -fvisibility=hidden"
+            make -C library "CC=$CC" "CFLAGS=$CFLAGS" "VERSION=${final.version}"
+            make -C host    "CC=$CC" "CFLAGS=$CFLAGS" "VERSION=${final.version}"
+          '';
+          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;
-}
+}