mu build failure on cygwin

wmonro1@LIB-6069HX1 ~/local/src
$ git clone git://github.com/djcb/mu.git
Cloning into 'mu'...
remote: Counting objects: 19275, done.
remote: Compressing objects: 100% (17/17), done.
remote: Total 19275 (delta 3), reused 0 (delta 0), pack-reused 19258
Receiving objects: 100% (19275/19275), 14.34 MiB | 5.91 MiB/s, done.
Resolving deltas: 100% (11551/11551), done.
Checking connectivity... done.
]0;~/local/src
wmonro1@LIB-6069HX1 ~/local/src
$ cd mu
]0;~/local/src/mu
wmonro1@LIB-6069HX1 ~/local/src/mu
$ autoreconf -i && ./configure && make
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /usr/bin/automake-1.14 line 3930.
configure.ac:34: installing './compile'
configure.ac:42: installing './config.guess'
configure.ac:42: installing './config.sub'
configure.ac:23: installing './install-sh'
configure.ac:23: installing './missing'
Makefile.am: installing './INSTALL'
contrib/Makefile.am: installing './depcomp'
guile/Makefile.am:50: installing 'guile/texinfo.tex'
mu4e/Makefile.am:21: installing 'mu4e/texinfo.tex'
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking for g++... g++
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of g++... gcc3
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... gcc3
checking for gcc option to accept ISO C99... -std=gnu99
checking for gcc -std=gnu99 option to accept ISO Standard C... (cached) -std=gnu99
checking for gcc -std=gnu99 option to accept ISO C99... (cached) -std=gnu99
checking how to run the C preprocessor... gcc -std=gnu99 -std=gnu99 -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking build system type... x86_64-unknown-cygwin
checking host system type... x86_64-unknown-cygwin
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc -std=gnu99 -std=gnu99... /usr/x86_64-pc-cygwin/bin/ld.exe
checking if the linker (/usr/x86_64-pc-cygwin/bin/ld.exe) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 8192
checking how to convert x86_64-unknown-cygwin file names to x86_64-unknown-cygwin format... func_convert_file_noop
checking how to convert x86_64-unknown-cygwin file names to toolchain format... func_convert_file_noop
checking for /usr/x86_64-pc-cygwin/bin/ld.exe option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... file_magic ^x86 archive import|^x86 DLL
checking for dlltool... dlltool
checking how to associate runtime and link libraries... func_cygming_dll_for_implib
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc -std=gnu99 -std=gnu99 object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc -std=gnu99 -std=gnu99 supports -fno-rtti -fno-exceptions... no
checking for gcc -std=gnu99 -std=gnu99 option to produce PIC... -DDLL_EXPORT -DPIC
checking if gcc -std=gnu99 -std=gnu99 PIC flag -DDLL_EXPORT -DPIC works... yes
checking if gcc -std=gnu99 -std=gnu99 static flag -static works... yes
checking if gcc -std=gnu99 -std=gnu99 supports -c -o file.o... yes
checking if gcc -std=gnu99 -std=gnu99 supports -c -o file.o... (cached) yes
checking whether the gcc -std=gnu99 -std=gnu99 linker (/usr/x86_64-pc-cygwin/bin/ld.exe) supports shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/x86_64-pc-cygwin/bin/ld.exe
checking if the linker (/usr/x86_64-pc-cygwin/bin/ld.exe) is GNU ld... yes
checking whether the g++ linker (/usr/x86_64-pc-cygwin/bin/ld.exe) supports shared libraries... yes
checking for g++ option to produce PIC... -DDLL_EXPORT -DPIC
checking if g++ PIC flag -DDLL_EXPORT -DPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/x86_64-pc-cygwin/bin/ld.exe) supports shared libraries... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking for gawk... (cached) gawk
checking for sort... sort
checking wordexp.h usability... yes
checking wordexp.h presence... yes
checking for wordexp.h... yes
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking for makeinfo... yes
checking for emacs... emacs
checking where .elc files should go... ${datarootdir}/emacs/site-lisp
checking for dirent.h that defines DIR... yes
checking for library containing opendir... none required
checking for struct dirent.d_type... yes
checking for struct dirent.d_ino... yes
checking for memset... yes
checking for memcpy... yes
checking for realpath... yes
checking for setlocale... yes
checking for strerror... yes
checking for getpass... yes
checking for timegm... yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for GLIB... yes
checking for GMIME... yes
checking for xapian-config... xapian-config
checking for GTK... no
Package gtk+-3.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gtk+-3.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gtk+-3.0' found
checking for WEBKIT... no
checking for GUILE... no
Package guile-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `guile-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'guile-2.0' found
checking for makeinfo... (cached) yes
checking for pmccabe... no
configure: WARNING:
   *** Developers: you do not seem to have the pmccabe tool installed.
   *** Please install it if you want to run the automated code checks
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating mu/Makefile
config.status: creating mu/tests/Makefile
config.status: creating lib/Makefile
config.status: creating lib/doxyfile
config.status: creating lib/tests/Makefile
config.status: creating mu4e/Makefile
config.status: creating mu4e/mu4e-meta.el
config.status: creating mu4e/texi.texi
config.status: creating guile/Makefile
config.status: creating guile/texi.texi
config.status: creating guile/mu/Makefile
config.status: creating guile/examples/Makefile
config.status: creating guile/tests/Makefile
config.status: creating guile/scripts/Makefile
config.status: creating toys/Makefile
config.status: creating toys/mug/Makefile
config.status: creating toys/msg2pdf/Makefile
config.status: creating man/Makefile
config.status: creating m4/Makefile
config.status: creating contrib/Makefile
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands

mu configuration is complete.
------------------------------------------------
mu version                           : 0.9.15

Xapian version                       : 1.2.18
GLib version                         : 2.42.2
GMime version                        : 2.6.20
Emacs version                        : GNU Emacs 24.5.1

Have wordexp                         : yes
Build mu4e emacs frontend            : yes
Build 'mug' toy-ui (gtk+/webkit)     : no
McCabe's Cyclomatic Complexity tool  : no

Have direntry->d_ino                 : yes
Have direntry->d_type                : yes
------------------------------------------------


Now, type 'make' to build mu (or 'make check' to run the unit tests, too)

make  all-recursive
make[1]: Entering directory '/home/wmonro1/local/src/mu'
Making all in m4
make[2]: Entering directory '/home/wmonro1/local/src/mu/m4'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/wmonro1/local/src/mu/m4'
Making all in man
make[2]: Entering directory '/home/wmonro1/local/src/mu/man'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/wmonro1/local/src/mu/man'
Making all in lib
make[2]: Entering directory '/home/wmonro1/local/src/mu/lib'
Making all in .
make[3]: Entering directory '/home/wmonro1/local/src/mu/lib'
  CC       mu-bookmarks.lo
  CC       mu-contacts.lo
mu-contacts.c: In function ‘encode_email_address’:
mu-contacts.c:236:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if (!isalnum(*cur)) {
   ^
mu-contacts.c:239:4: warning: array subscript has type ‘char’ [-Wchar-subscripts]
    *cur = tolower(*cur);
    ^
  CC       mu-container.lo
  CC       mu-date.lo
mu-date.c: In function ‘clear_date_s’:
mu-date.c:139:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if (isdigit(date[u1]))
   ^
  CC       mu-flags.lo
  CC       mu-index.lo
  CC       mu-log.lo
  CC       mu-maildir.lo
  CC       mu-msg-crypto.lo
  CXX      mu-msg-doc.lo
  CC       mu-msg-fields.lo
  CC       mu-msg-file.lo
  CXX      mu-msg-iter.lo
  CC       mu-msg-part.lo
  CC       mu-msg-prio.lo
  CC       mu-msg-sexp.lo
mu-msg-sexp.c: In function ‘append_sexp_attr’:
mu-msg-sexp.c:64:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if (iscntrl(*cur))
   ^
  CC       mu-msg.lo
mu-msg.c: In function ‘cmp_str’:
mu-msg.c:719:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   diff = tolower(s1[0]) - tolower(s2[0]);
   ^
mu-msg.c:719:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  CXX      mu-query.lo
  CC       mu-runtime.lo
  CC       mu-script.lo
  CXX      mu-store.lo
  CXX      mu-store-read.lo
  CXX      mu-store-write.lo
  CC       mu-str.lo
mu-str.c: In function ‘mu_str_display_contact_s’:
mu-str.c:158:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   for (c2 = contact; c2 < c && !(isalnum(*c2)); ++c2);
   ^
mu-str.c: In function ‘mu_str_size_parse_bkm’:
mu-str.c:185:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  if (!isdigit(str[0]))
  ^
mu-str.c:189:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  for (++str; isdigit(*str); ++str);
  ^
mu-str.c:191:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  switch (tolower(*str)) {
  ^
mu-str.c: In function ‘mu_str_subject_normalize’:
mu-str.c:361:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  while (isspace(*cur)) ++cur; /* skip space */
  ^
mu-str.c:364:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  if (tolower(cur[0]) == 'r' && tolower(cur[1]) == 'e')
  ^
mu-str.c:364:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
mu-str.c:367:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  else if (tolower(cur[0]) == 'f' && tolower(cur[1]) == 'w' &&
  ^
mu-str.c:367:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
mu-str.c:368:4: warning: array subscript has type ‘char’ [-Wchar-subscripts]
    tolower(cur[2]) == 'd')
    ^
mu-str.c:376:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if (isdigit(cur[1])) {
   ^
mu-str.c:377:4: warning: array subscript has type ‘char’ [-Wchar-subscripts]
    do { ++cur; } while (isdigit(*cur));
    ^
mu-str.c:381:5: warning: array subscript has type ‘char’ [-Wchar-subscripts]
     do { ++cur; } while (isspace(*cur));
     ^
mu-str.c:390:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   do { ++cur; } while (isspace(*cur));
   ^
mu-str.c: In function ‘mu_str_process_msgid’:
mu-str.c:474:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   *c = isalnum (*c) ? tolower (*c) : '_';
   ^
mu-str.c:474:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
mu-str.c: In function ‘check_for_field’:
mu-str.c:492:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  while (pfx.str && *pfx.str && !isalnum(*pfx.str))
  ^
mu-str.c: In function ‘handle_esc_maybe’:
mu-str.c:543:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  if (g_unichar_ispunct(uc) || isblank(kar)) {
  ^
mu-str.c: In function ‘split_term’:
mu-str.c:675:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  for (start = term; *start && !isalnum (*start); start++);
  ^
mu-str.c:676:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  for (tail = term + l; tail > start && !isalnum (*(tail-1)); tail--);
  ^
mu-str.c: In function ‘mu_str_asciify_in_place’:
mu-str.c:844:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if ((!isprint(*c) && !isspace (*c)) || !isascii(*c))
   ^
mu-str.c:844:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
mu-str.c: In function ‘read_val’:
mu-str.c:979:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   } else if (isblank(*cur) && !quoted)
   ^
mu-str.c: In function ‘mu_str_parse_arglist’:
mu-str.c:1015:2: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  while ((isblank(*cur)))
  ^
mu-str.c:1034:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   while ((isblank(*cur)))
   ^
mu-str.c: In function ‘mu_str_remove_ctrl_in_place’:
mu-str.c:1058:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if (!iscntrl(*cur))
   ^
mu-str.c:1061:3: warning: array subscript has type ‘char’ [-Wchar-subscripts]
   if (isspace(*cur)) {
   ^
mu-str.c:1068:5: warning: array subscript has type ‘char’ [-Wchar-subscripts]
     if (!iscntrl (*cur))
     ^
  CC       mu-threader.lo
  CC       mu-util.lo
  CXXLD    libmu.la
copying selected object files to avoid basename conflicts...
make[3]: Leaving directory '/home/wmonro1/local/src/mu/lib'
Making all in tests
make[3]: Entering directory '/home/wmonro1/local/src/mu/lib/tests'
make  all-am
make[4]: Entering directory '/home/wmonro1/local/src/mu/lib/tests'
  CC       test-mu-common.lo
  CCLD     libtestmucommon.la
libtool:   error: object name conflicts in archive: .libs/libtestmucommon.lax/libmu.a//home/wmonro1/local/src/mu/lib/tests/../.libs/libmu.a
Makefile:576: recipe for target 'libtestmucommon.la' failed
make[4]: *** [libtestmucommon.la] Error 1
make[4]: Leaving directory '/home/wmonro1/local/src/mu/lib/tests'
Makefile:528: recipe for target 'all' failed
make[3]: *** [all] Error 2
make[3]: Leaving directory '/home/wmonro1/local/src/mu/lib/tests'
Makefile:599: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/home/wmonro1/local/src/mu/lib'
Makefile:484: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/wmonro1/local/src/mu'
Makefile:393: recipe for target 'all' failed
make: *** [all] Error 2
]0;~/local/src/mu
wmonro1@LIB-6069HX1 ~/local/src/mu
$