See if we can enable position independent code across the board for zlib

zlib/zlib.patch

@@ -1,7 +1,7 @@
 diff -Naur zlib/CMakeLists.txt ZLIB_BLD/CMakeLists.txt
---- zlib/CMakeLists.txt	2024-03-14 20:07:06.811461199 -0400
-+++ ZLIB_BLD/CMakeLists.txt	2024-03-14 20:02:42.716002504 -0400
-@@ -3,6 +3,13 @@
+--- zlib/CMakeLists.txt	2025-01-02 21:07:37.801523356 -0500
++++ ZLIB_BLD/CMakeLists.txt	2025-01-02 21:08:09.170946446 -0500
+@@ -3,8 +3,17 @@
 
  project(zlib C)
 
@@ -14,8 +14,12 @@ diff -Naur zlib/CMakeLists.txt ZLIB_BLD/CMakeLists.txt
 +
  set(VERSION "1.3.1")
 
++set(CMAKE_POSITION_INDEPENDENT_CODE ON)
++
  option(ZLIB_BUILD_EXAMPLES "Enable Zlib Examples" ON)
-@@ -57,41 +64,38 @@
+
+ set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
+@@ -57,41 +66,38 @@
  # Check for unistd.h
  #
  check_include_file(unistd.h Z_HAVE_UNISTD_H)
@@ -76,7 +80,7 @@ diff -Naur zlib/CMakeLists.txt ZLIB_BLD/CMakeLists.txt
  )
  set(ZLIB_PRIVATE_HDRS
      crc32.h
-@@ -122,14 +126,8 @@
+@@ -122,14 +128,8 @@
      zutil.c
  )
 
@@ -92,7 +96,7 @@ diff -Naur zlib/CMakeLists.txt ZLIB_BLD/CMakeLists.txt
  string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
      "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
 
-@@ -147,16 +145,35 @@
+@@ -147,16 +147,35 @@
                              -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
                              -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
      set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
@@ -129,7 +133,7 @@ diff -Naur zlib/CMakeLists.txt ZLIB_BLD/CMakeLists.txt
      # This property causes shared libraries on Linux to have the full version
      # encoded into their final filename.  We disable this on Cygwin because
      # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
-@@ -165,18 +182,12 @@
+@@ -165,18 +184,12 @@
      # This has no effect with MSVC, on that platform the version info for
      # the DLL comes from the resource file win32/zlib1.rc
      set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
@@ -152,7 +156,7 @@ diff -Naur zlib/CMakeLists.txt ZLIB_BLD/CMakeLists.txt
 
  if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
      install(TARGETS zlib zlibstatic
-@@ -187,12 +198,7 @@
+@@ -187,12 +200,7 @@
  if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
      install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
  endif()