diff --git a/pkgs/by-name/tt/ttf2pt1/package.nix b/pkgs/by-name/tt/ttf2pt1/package.nix
index 75b32dc70a2c..67f27ccb9bd3 100644
--- a/pkgs/by-name/tt/ttf2pt1/package.nix
+++ b/pkgs/by-name/tt/ttf2pt1/package.nix
@@ -4,14 +4,15 @@
   fetchurl,
   perl,
   freetype,
+  fetchpatch,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "ttf2pt1";
   version = "3.4.4";
 
   src = fetchurl {
-    url = "mirror://sourceforge/ttf2pt1/ttf2pt1-${version}.tgz";
+    url = "mirror://sourceforge/ttf2pt1/ttf2pt1-${finalAttrs.version}.tgz";
     sha256 = "1l718n4k4widx49xz7qrj4mybzb8q67kp2jw7f47604ips4654mf";
   };
 
@@ -28,7 +29,20 @@ stdenv.mkDerivation rec {
   buildInputs = [ freetype ];
   nativeBuildInputs = [ perl ];
 
-  patches = ./gentoo-makefile.patch; # also contains the freetype patch
+  patches = [
+    ./gentoo-makefile.patch # also contains the freetype patch
+
+    # fix build with c99
+    # https://src.fedoraproject.org/rpms/ttf2pt1/c/070de5269475785d27ae7996513bee12cb9a0f53
+    (fetchpatch {
+      url = "https://src.fedoraproject.org/rpms/ttf2pt1/raw/070de5269475785d27ae7996513bee12cb9a0f53/f/ttf2pt1-c99.patch";
+      hash = "sha256-7+RnExqxED+fUJSj3opfYi0eQ5zqswOZnKjQMvlF020=";
+    })
+
+    # fix build with gcc14
+    # https://src.fedoraproject.org/rpms/ttf2pt1/c/1ebb612acb7088095c6bd7242209f0ce848895fb
+    ./ttf2pt1-gcc14.patch
+  ];
 
   meta = {
     description = "True Type to Postscript Type 3 converter, fpdf";
@@ -36,4 +50,4 @@ stdenv.mkDerivation rec {
     license = "ttf2pt1";
     platforms = lib.platforms.linux;
   };
-}
+})
diff --git a/pkgs/by-name/tt/ttf2pt1/ttf2pt1-gcc14.patch b/pkgs/by-name/tt/ttf2pt1/ttf2pt1-gcc14.patch
new file mode 100644
index 000000000000..22503463c87a
--- /dev/null
+++ b/pkgs/by-name/tt/ttf2pt1/ttf2pt1-gcc14.patch
@@ -0,0 +1,47 @@
+diff --git a/ft.c b/ft.c
+index 4ca1ca6..3ae9ac9 100644
+--- a/ft.c
++++ b/ft.c
+@@ -457,7 +457,7 @@ static double lastx, lasty;
+ 
+ static int
+ outl_moveto(
+-	FT_Vector *to,
++	const FT_Vector *to,
+ 	void *unused
+ )
+ {
+@@ -477,7 +477,7 @@ outl_moveto(
+ 
+ static int
+ outl_lineto(
+-	FT_Vector *to,
++	const FT_Vector *to,
+ 	void *unused
+ )
+ {
+@@ -493,8 +493,8 @@ outl_lineto(
+ 
+ static int
+ outl_conicto(
+-	FT_Vector *control1,
+-	FT_Vector *to,
++	const FT_Vector *control1,
++	const FT_Vector *to,
+ 	void *unused
+ )
+ {
+@@ -514,9 +514,9 @@ outl_conicto(
+ 
+ static int
+ outl_cubicto(
+-	FT_Vector *control1,
+-	FT_Vector *control2,
+-	FT_Vector *to,
++	const FT_Vector *control1,
++	const FT_Vector *control2,
++	const FT_Vector *to,
+ 	void *unused
+ )
+ {
+