This is the mail archive of the
cygwin-apps@cygwin.com
mailing list for the Cygwin project.
building setup.exe -- solved
- From: Jan Nieuwenhuizen <janneke at gnu dot org>
- To: cygwin-apps at cygwin dot com
- Date: Fri, 14 Jun 2002 12:55:23 +0200
- Subject: building setup.exe -- solved
- Organization: Jan at Appel
Hi,
Finally, I found the problem. I'm including the error messages I got
for others to find.
Here's what I've been struggling with:
g++ -v -mno-cygwin -o setup.exe ... -lmingw32
...
/home/fred/cvs/cygwin/cygwin-apps/setup-build/bz2lib/../../setup/bz2lib/bzlib.c:866: undefined reference to `_impure_ptr'
bz2lib/libbz2.a(bzlib.o): In function `bzopen_or_bzdopen':
/home/fred/cvs/cygwin/cygwin-apps/setup-build/bz2lib/../../setup/bz2lib/bzlib.c:1424: undefined reference to `_ctype_'
...
And, adding -lg:
g++ -v -mno-cygwin -o setup.exe ... -lmingw32 -lg
Warning: resolving __ctype_ by linking to __imp___ctype_ (auto-import)
bz2lib/libbz2.a(bzlib.o): In function `bzopen_or_bzdopen':
/home/fred/cvs/cygwin/cygwin-apps/setup-build/bz2lib/../../setup/bz2lib/bzlib.c:1424: variable '_ctype_' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.
collect2: ld returned 1 exit status
It turned out to be a rather silly bug (once you know it): CPPFLAGS,
when passed to ./configure (like setup's webpage advertises), doesn't
make in into bz2lib/Makefile. When using a gcc -mno-cygwin
cross-compiler on linux, you need to override CPPFLAGS for bz2lib too,
so that mingw's _G_config.h and other mingw headers get included.
I would like to suggest the patch below.
Greetings,
Jan.
12:40:55 fred@peder:~/cvs/cygwin/cygwin-apps/setup
$ diff -u bz2lib/configure.in.orig bz2lib/configure.in
--- bz2lib/configure.in.orig Fri Jun 14 12:35:07 2002
+++ bz2lib/configure.in Fri Jun 14 12:36:09 2002
@@ -7,7 +7,7 @@
AM_INIT_AUTOMAKE(libbz2, 0.0)
AM_MAINTAINER_MODE
-CPPFLAGS=-U_WIN32
+CPPFLAGS="$CPPFLAGS -U_WIN32"
AC_CANONICAL_HOST
AC_PROG_CC
AC_PROG_RANLIB
--
Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond - The music typesetter
http://www.xs4all.nl/~jantien | http://www.lilypond.org