Re: XSParagraph build failure with static libperl

[Gavin Smith]

On Tue, Jun 06, 2017 at 09:56:37PM -0400, Ken Brown wrote:
> >I've committed a change to do this.  I copied the test from the
> >top-level configure.ac to see if we are on MS-Windows:
> >
> >host_is_windows=no
> >case "$host" in
> >    *-mingw32 | *-mingw64 | *-msdosdjgpp )  host_is_windows=yes ;;
> >esac
> >AM_CONDITIONAL([HOST_IS_WINDOWS], [test "x$host_is_windows" = "xyes"])
> >
> >Please someone say if this is wrong for a system where the -no-undefined
> >flag is needed (e.g. cygwin).
> 
> It's wrong on Cygwin.  Without -no-undefined -lperl I get errors like this:
> 
> /bin/sh ./libtool  --tag=CC   --mode=link gcc -DPERL_USE_SAFE_PUTENV
> -D_GNU_SOURCE -U__STRICT_ANSI__ -ggdb -O2 -pipe
> -Wimplicit-function-declaration -fwrapv -fno-strict-aliasing
> -fstack-protector-strong -D_FORTIFY_SOURCE=2 -DVERSION=\"0\"
> -DXS_VERSION=\"1\" "-I/usr/lib/perl5/5.24/x86_64-cygwin-threads/CORE"
> -avoid-version -module    -o XSParagraph.la -rpath /usr/lib/texinfo
> XSParagraph_la-XSParagraph.lo XSParagraph_la-xspara.lo
> XSParagraph_la-text.lo ./lib/libgnu.la
> libtool:   error: can't build x86_64-unknown-cygwin shared library unless
> -no-undefined is specified

So I guess it should be

host_is_windows=no
case "$host" in
    *-mingw32 | *-mingw64 | *-msdosdjgpp | *-cygwin )  host_is_windows=yes ;;
esac
AM_CONDITIONAL([HOST_IS_WINDOWS], [test "x$host_is_windows" = "xyes"])