vcpkg/ports/libpq/patches/mingw/additional-zlib-names.patch

diff --git a/configure b/configure
index c22d3de..75210f0 100755
--- a/configure
+++ b/configure
@@ -11777,13 +11789,13 @@ Use --without-readline to disable readline support." "$LINENO" 5
 fi
 
 if test "$with_zlib" = yes; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inflate in -lz" >&5
-$as_echo_n "checking for inflate in -lz... " >&6; }
-if ${ac_cv_lib_z_inflate+:} false; then :
+  if test "$enable_debug" = yes; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing inflate" >&5
+$as_echo_n "checking for library containing inflate... " >&6; }
+if ${ac_cv_search_inflate+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lz  $LIBS"
+  ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -11802,23 +11814,101 @@ return inflate ();
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_z_inflate=yes
-else
-  ac_cv_lib_z_inflate=no
+for ac_lib in '' zd zlibd zlib1d z zlib zlib1; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_inflate=$ac_res
 fi
 rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+    conftest$ac_exeext
+  if ${ac_cv_search_inflate+:} false; then :
+  break
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_inflate" >&5
-$as_echo "$ac_cv_lib_z_inflate" >&6; }
-if test "x$ac_cv_lib_z_inflate" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBZ 1
+done
+if ${ac_cv_search_inflate+:} false; then :
+
+else
+  ac_cv_search_inflate=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_inflate" >&5
+$as_echo "$ac_cv_search_inflate" >&6; }
+ac_res=$ac_cv_search_inflate
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+$as_echo "#define HAVE_LIBZ 1" >>confdefs.h
+
+else
+  as_fn_error $? "zlib library not found
+If you have zlib already installed, see config.log for details on the
+failure.  It is possible the compiler isn't looking in the proper directory.
+Use --without-zlib to disable zlib support." "$LINENO" 5
+fi
+
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing inflate" >&5
+$as_echo_n "checking for library containing inflate... " >&6; }
+if ${ac_cv_search_inflate+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char inflate ();
+int
+main ()
+{
+return inflate ();
+  ;
+  return 0;
+}
 _ACEOF
+for ac_lib in '' z zlib zlib1; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_inflate=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if ${ac_cv_search_inflate+:} false; then :
+  break
+fi
+done
+if ${ac_cv_search_inflate+:} false; then :
 
-  LIBS="-lz $LIBS"
+else
+  ac_cv_search_inflate=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_inflate" >&5
+$as_echo "$ac_cv_search_inflate" >&6; }
+ac_res=$ac_cv_search_inflate
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+$as_echo "#define HAVE_LIBZ 1" >>confdefs.h
 
 else
   as_fn_error $? "zlib library not found
@@ -11827,6 +11917,7 @@ failure.  It is possible the compiler isn't looking in the proper directory.
 Use --without-zlib to disable zlib support." "$LINENO" 5
 fi
 
+  fi
 fi
 
 if test "$enable_spinlocks" = yes; then
diff --git a/configure.in b/configure.in
index 976f90d..e3cd80b 100644
--- a/configure.in
+++ b/configure.in
@@ -1170,11 +1170,21 @@ Use --without-readline to disable readline support.])
 fi
 
 if test "$with_zlib" = yes; then
-  AC_CHECK_LIB(z, inflate, [],
-               [AC_MSG_ERROR([zlib library not found
+  if test "$enable_debug" = yes; then
+    AC_SEARCH_LIBS(inflate, [zd zlibd zlib1d z zlib zlib1],
+      [AC_DEFINE([HAVE_LIBZ], [1], [Define to 1 if you have the `z' library.])],
+      [AC_MSG_ERROR([zlib library not found
 If you have zlib already installed, see config.log for details on the
 failure.  It is possible the compiler isn't looking in the proper directory.
 Use --without-zlib to disable zlib support.])])
+  else
+    AC_SEARCH_LIBS(inflate, [z zlib zlib1],
+      [AC_DEFINE([HAVE_LIBZ], [1], [Define to 1 if you have the `z' library.])],
+      [AC_MSG_ERROR([zlib library not found
+If you have zlib already installed, see config.log for details on the
+failure.  It is possible the compiler isn't looking in the proper directory.
+Use --without-zlib to disable zlib support.])])
+  fi
 fi
 
 if test "$enable_spinlocks" = yes; then
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
index 244886a..29dd35b 100644
--- a/src/include/pg_config.h.in
+++ b/src/include/pg_config.h.in
@@ -374,7 +374,7 @@
 /* Define to 1 if you have the `xslt' library (-lxslt). */
 #undef HAVE_LIBXSLT
 
-/* Define to 1 if you have the `z' library (-lz). */
+/* Define to 1 if you have the `z' library. */
 #undef HAVE_LIBZ
 
 /* Define to 1 if the system has the type `locale_t'. */