document mingw linker fix and close associated bug

[debian/gzip] / configure.ac

diff --git a/configure.ac b/configure.ac
index 08ad445023e9c79472bcd756efc17a02fe59a65e..7fe58ac24d13de5f8e041b184b99aadf41b0e9e0 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 # Configure template for gzip.
 
-# Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
+# Copyright (C) 1999-2002, 2006-2007, 2009-2018 Free Software Foundation, Inc.
 
 # Copyright (C) 1992-1993 Jean-loup Gailly
 
@@ -19,7 +19,7 @@
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 # 02111-1307, USA.
 
-AC_PREREQ([2.60])
+AC_PREREQ([2.63])
 AC_INIT([gzip],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
         [bug-gzip@gnu.org])
@@ -28,7 +28,8 @@ AC_CONFIG_SRCDIR([gzip.c])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
-AM_INIT_AUTOMAKE([1.11 subdir-objects dist-xz color-tests parallel-tests])
+AM_INIT_AUTOMAKE([1.11 subdir-objects dist-xz dist-zip
+                  color-tests parallel-tests])
 AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.
 
 dnl POSIXCHECK is worthwhile for maintainers, but adds several seconds
@@ -105,10 +106,10 @@ if test "$gl_gcc_warnings" = yes; then
   nw="$nw -Wtraditional"            # Warns on #elif which we use often
   nw="$nw -Wcast-qual"              # Too many warnings for now
   nw="$nw -Wconversion"             # Too many warnings for now
+  nw="$nw -Wduplicated-branches"    # Too many false alarms
   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
   nw="$nw -Wsign-conversion"        # Too many warnings for now
   nw="$nw -Wtraditional-conversion" # Too many warnings for now
-  nw="$nw -Wunreachable-code"       # Too many warnings for now
   nw="$nw -Wpadded"                 # Our structs are not padded
   nw="$nw -Wredundant-decls"        # openat.h declares e.g., mkdirat
   nw="$nw -Wlogical-op"             # any use of fwrite provokes this
@@ -131,7 +132,7 @@ if test "$gl_gcc_warnings" = yes; then
 
   # Using -Wstrict-overflow is a pain, but the alternative is worse.
   # For an example, see the code that provoked this report:
-  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
   # Code like that still infloops with gcc-4.6.0 and -O2.  Scary indeed.
 
   gl_MANYWARN_ALL_GCC([ws])
@@ -175,6 +176,7 @@ if test "$gl_gcc_warnings" = yes; then
   # Remove the following and save the result in GNULIB_WARN_CFLAGS.
   nw=
   nw="$nw -Wstrict-overflow"
+  nw="$nw -Wformat-truncation=2"
   nw="$nw -Wuninitialized"
   nw="$nw -Wunused-macros"
   nw="$nw -Wmissing-prototypes"