--- zimpl-362/CMakeLists.txt.orig	2024-09-17 19:44:17.589497126 -0600
+++ zimpl-362/CMakeLists.txt	2024-09-17 19:55:30.619340046 -0600
@@ -125,11 +125,11 @@ include_directories(${GMP_INCLUDE_DIRS})
 set(libs ${libs} ${GMP_LIBRARIES})
 
 if(ZLIB)
-    find_package(ZLIB)
+    find_package(ZLIB-NG)
 endif()
-if(ZLIB_FOUND)
-    set(libs ${libs} ${ZLIB_LIBRARIES})
-    include_directories(${ZLIB_INCLUDE_DIRS})
+if(ZLIB-NG_FOUND)
+    set(libs ${libs} -lz-ng)
+    include_directories(/usr/include)
 else()
     add_definitions(-DWITHOUT_ZLIB)
 endif()
--- zimpl-362/src/zimpl/iread.c.orig	2024-09-17 19:44:29.886348077 -0600
+++ zimpl-362/src/zimpl/iread.c	2024-09-17 19:50:15.407160377 -0600
@@ -38,7 +38,7 @@
 #endif
 
 #ifndef WITHOUT_ZLIB
-#include <zlib.h>
+#include <zlib-ng.h>
 #endif
 
 #include "zimpl/lint.h"
--- zimpl-362/src/zimpl/metaio.c.orig	2024-09-12 23:08:28.000000000 -0600
+++ zimpl-362/src/zimpl/metaio.c	2024-09-17 19:49:03.368033502 -0600
@@ -34,7 +34,8 @@
 #include <assert.h>
 
 #ifndef WITHOUT_ZLIB
-#include <zlib.h>
+#define WITH_GZFILEOP
+#include <zlib-ng.h>
 #endif
 
 #include "zimpl/lint.h"
@@ -248,7 +249,7 @@ MFP* mio_open(char const* name, char con
          {
             mfp->type = MFP_ZLIB;
          
-            if (NULL == (mfp->fp.zlib = gzopen(filename, "r")))
+            if (NULL == (mfp->fp.zlib = zng_gzopen(filename, "r")))
             {
                perror(filename);
                free(mfp);
@@ -300,7 +301,7 @@ void mio_close(MFP* mfp)
       break;
 #ifndef WITHOUT_ZLIB
    case MFP_ZLIB :
-      gzclose(mfp->fp.zlib);
+      zng_gzclose(mfp->fp.zlib);
       break;
 #endif /* ! WITHOUT_ZLIB */
    default :
@@ -328,7 +329,7 @@ int mio_getc(MFP const* mfp)
       break;
 #ifndef WITHOUT_ZLIB
    case MFP_ZLIB :
-      c = gzgetc(mfp->fp.zlib);
+      c = zng_gzgetc(mfp->fp.zlib);
       break;
 #endif /* ! WITHOUT_ZLIB */
    default :
@@ -354,7 +355,7 @@ char* mio_gets(MFP const* mfp, char* buf
       break;
 #ifndef WITHOUT_ZLIB
    case MFP_ZLIB :
-      s = gzgets(mfp->fp.zlib, buf, len);
+      s = zng_gzgets(mfp->fp.zlib, buf, len);
       break;
 #endif /* ! WITHOUT_ZLIB */
    default :