libcharset and libtool on cygwin

[Peter B. <cl...@pe...>]

Using current CVS, though this problem has been around since at least middle
of May.

There appears to be a problem with the generated libtool in that it does not
use the correct switches when building dlls. This causes the build to
terminate - see below.  Upon investigation it seems that the autoconf
generated libcharset/configure does not include the bits from
libcharset/m4/libtool.m4 that determine how to build dlls. Now, I really
know next to nothing about autoconf and friends, but I have made a small
patch to libcharset/configure.in which allows the clisp build process to
continue.

I have looked on autoconf, libtool and cygwin mail lists, but I cannot find
a mention of this problem with libtool.  Perhaps you can shed some light on
it and comment on my patch below?

Peter


bash-2.05a$ ./configure
bash-2.05a$ cd src
bash-2.05a$ ./makemake  --with-readline --with-gettext --with-dynamic-ffi > Makefile
bash-2.05a$ make lispinit.mem

...

builddir="`pwd`"; cd libcharset && make && make install-lib libdir="$builddir" includedir="$builddir"
make[1]: Entering directory `/cygdrive/d/home/clisp/bld/clisp/src/libcharset'
if [ ! -d include ] ; then mkdir include ; fi
cp ../../libcharset/include/libcharset.h.in include/libcharset.h
cd lib && make all
make[2]: Entering directory `/cygdrive/d/home/clisp/bld/clisp/src/libcharset/lib'
/bin/sh ../libtool --mode=compile gcc -I. -I../../../libcharset/lib -I.. -I../../../libcharset/lib/.. -g -O2  -DHAVE_CONFIG_H -DLIBDIR=\"/usr/local/lib\" -c ../../../libcharset/lib/localcharset.c
mkdir .libs
gcc -I. -I../../../libcharset/lib -I.. -I../../../libcharset/lib/.. -g -O2 -DHAVE_CONFIG_H -DLIBDIR=\"/usr/local/lib\" -c ../../../libcharset/lib/localcharset.c      -DDLL_EXPORT -DPIC -o localcharset.o
mv -f localcharset.o .libs/localcharset.lo
gcc -I. -I../../../libcharset/lib -I.. -I../../../libcharset/lib/.. -g -O2 -DHAVE_CONFIG_H -DLIBDIR=\"/usr/local/lib\" -c ../../../libcharset/lib/localcharset.c -o localcharset.o >/dev/null 2>&1
mv -f .libs/localcharset.lo localcharset.lo
/bin/sh ../libtool --mode=link gcc  -o libcharset.la -rpath /usr/local/lib -version-info 1:0:0 -no-undefined localcharset.lo
rm -fr .libs/libcharset.la .libs/libcharset.* .libs/libcharset.*
generating symbol list for `libcharset.la'
 dlltool --export-all --exclude-symbols DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12 --output-def .libs/cygcharset-1.dll-def  localcharset.lo 
 sed -e "1,/EXPORTS/d" -e "s/ @ [0-9]*//" -e "s/ *;.*$//" < .libs/cygcharset-1.dll-def > .libs/libcharset.exp
if test "x`head -1 .libs/libcharset.exp`" = xEXPORTS; then cp .libs/libcharset.exp .libs/cygcharset-1.dll-def; else echo EXPORTS > .libs/cygcharset-1.dll-def; _lt_hint=1; cat .libs/libcharset.exp | while read symbol; do set dummy $symbol; case $# in 2) echo " $2 @ $_lt_hint ; " >> .libs/cygcharset-1.dll-def;; *) echo " $2 @ $_lt_hint $3 ; " >> .libs/cygcharset-1.dll-def;; esac; _lt_hint=`expr 1 + $_lt_hint`; done; fi
 gcc -Wl,--base-file,.libs/cygcharset-1.dll-base -Wl,-e,__cygwin_dll_entry@12 -o .libs/cygcharset-1.dll  localcharset.lo  
/usr/lib/libcygwin.a(libcmain.o)(.text+0x6a): undefined reference to `WinMain@16'
collect2: ld returned 1 exit status
make[2]: *** [libcharset.la] Error 1
make[2]: Leaving directory `/cygdrive/d/home/clisp/bld/clisp/src/libcharset/lib'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/cygdrive/d/home/clisp/bld/clisp/src/libcharset'
make: *** [libcharset.h] Error 2



bash-2.05a$ cvs diff -u2 libcharset/configure.in
Index: libcharset/configure.in
===================================================================
RCS file: /cvsroot/clisp/clisp/libcharset/configure.in,v
retrieving revision 1.1
diff -u -2 -r1.1 configure.in
--- libcharset/configure.in	10 May 2002 20:18:06 -0000	1.1
+++ libcharset/configure.in	3 Jun 2002 21:53:40 -0000
@@ -53,4 +53,6 @@
 dnl           check for build configuration
 
+AC_LIBTOOL_DLOPEN
+AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL