From 90180905a2557aefaf4f9ca5416968d829254861 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 26 Feb 2020 00:14:24 +0100
Subject: [PATCH] netpbm: Fix tiff support

The build script check whether JPEGLIB and ZLIB are not set to NONE.
We did not set the latter as pkg-config handles zlib requirement
for libpng dependency and the comment in config.mk only talks about
zlib being needed for libpng.

Since libtiff only needs libz for static linking, we turn TIFFLIB_NEEDS_ZLIB
off instead of pointlessly setting ZLIB value.

Closes: https://github.com/NixOS/nixpkgs/issues/75156
---
 pkgs/tools/graphics/netpbm/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/tools/graphics/netpbm/default.nix b/pkgs/tools/graphics/netpbm/default.nix
index 99946c5a9e5..2755b6b2a0e 100644
--- a/pkgs/tools/graphics/netpbm/default.nix
+++ b/pkgs/tools/graphics/netpbm/default.nix
@@ -58,6 +58,8 @@ stdenv.mkDerivation {
     substituteInPlace "config.mk" \
         --replace "TIFFLIB = NONE" "TIFFLIB = ${libtiff.out}/lib/libtiff.so" \
         --replace "TIFFHDR_DIR =" "TIFFHDR_DIR = ${libtiff.dev}/include" \
+        --replace "TIFFLIB_NEEDS_JPEG = Y" "TIFFLIB_NEEDS_JPEG = N" \
+        --replace "TIFFLIB_NEEDS_Z = Y" "TIFFLIB_NEEDS_Z = N" \
         --replace "JPEGLIB = NONE" "JPEGLIB = ${libjpeg.out}/lib/libjpeg.so" \
         --replace "JPEGHDR_DIR =" "JPEGHDR_DIR = ${libjpeg.dev}/include"
   '' + stdenv.lib.optionalString stdenv.isDarwin ''