Hello,
I want to adapt the Makefile of bzip2 for cygwin and I want to
understand enough of what I am doing.
This are the lines of interest from the Linux Makefile:
BIGFILES=-D_FILE_OFFSET_BITS=64
CFLAGS+=-fpic -fPIC -Wall -Winline $(BIGFILES)
SOEXT=so
SONAME=libbz2.${SOEXT}.1
SOLDFLAGS=-shared -Wl,-soname -Wl,$(SONAME)
$(CC) $(LDFLAGS) $(SOLDFLAGS) -o libbz2.${SOEXT}.1.0.5 $(OBJS)
$(CC) $(LDFLAGS) $(CFLAGS) -o bzip2-shared bzip2.c libbz2.${SOEXT}.1.0.5
What would by the appropriate adaption for Cygwin?
I would try with this as a bare minimum, but then I loose all the versioning:
CFLAGS+=-Wall
SONAME=
SOLDFLAGS=-shared
$(CC) $(LDFLAGS) $(SOLDFLAGS) -o cygbz2.dll $(OBJS)
$(CC) $(LDFLAGS) $(CFLAGS) -o bzip2-shared bzip2.c cygbz2.dll
Then the cygwin doc [1] suggests some other flags but no soname at all:
gcc -shared -o cyg${module}.dll \
-Wl,--out-implib=lib${module}.dll.a \
-Wl,--export-all-symbols \
-Wl,--enable-auto-import \
-Wl,--whole-archive ${old_libs} \
-Wl,--no-whole-archive ${dependency_libs}
Al
[1] http://www.cygwin.com/cygwin-ug-net/dll.html
--
Caution crosser: Runnig Gentoo/Prefix on Cygwin/Vista.
All stupid questions are related to that context.
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
