hi-
first... thanks Gerrit for the help. i think i am
making more progress. i never built my own dll as an
export library. it is fun to try.
i have a question about this code below. the way i
have it set up is fox.dll is the name of the dll i
want to create. fox.dll.a is (good question) i guess
it is a output product of the process. then i supply
my object files. then i supply the name of the import
libs i need to link against.
here is a question. do i have to supply all 19 of
these import libs that end with *.a in my
cygwin/lib/mingw directory? i know there can be tons
of these *.a and 19 is not very many but that is lots
of typing. is there a way i can not specify the path
and then import lib name for every one of the 19. for
i.e. could i somehow skip the path and just list each
one with some mystery setting or make it so it looks
automatically at the directory and takes all the *.a
files.
-my settings for the last step required to build
dll------------------------------------------------------
c++ -shared -o fox.dll \
-Wl,--out-implib=fox.dll.a \
-Wl,--export-all-symbols \
-Wl,--enable-auto-import \
-Wl,--whole-archive /cygwin/fox.o
/cygwin/fox_wrap.o \
-Wl,--no-whole-archive
/cygwin/lib/mingw/libmingw32.a
-----------------------------------------------
thanks for any help you can provide
marvin
for completeness, i am snipping a little bit of the
manual and a response to help clarify things.
-----an explanation from the manual-------------------
However, if you are building a dll as an export
library, you will probably want to use the complete
syntax:
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_lib} \
-Wl,--no-whole-archive ${dependency_libs}
Where ${module} is the name of your DLL, ${old_lib}
are all your object files, bundled together in static
libs or single object files and the ${dependency_libs}
are import libs you need to link against, e.g '-lpng
-lz -L/usr/local/special -lmyspeciallib'.
----------------------------------------------
----more and different explanation----------------
gcc -shared -o cyg${NAME}.dll
-Wl,--out-implib=lib${NAME}.dll.a \
-Wl,--export-all-symbols -Wl,--enable-auto-import
-Wl,--whole-archive
${OBJECTS} -Wl,--no-whole-archive ${LIBSPATH} ${LIBS}
You'll get an importlibrary which is stored in the
$LIBPATH and a DLL
which is used at runtime and needs to be somewhere in
the $PATH.
--------------------------------------
KEYWORDS
$SRCS: C/C++ sources
$OBJS: compiled .o files
$LIBPATH: Path to language library, e.g.
-L/usr/lib/python2.2/config. Use the path to the .a
file in preference to the .dll file.
$LIBS: Language library, e.g. -lpython2.2
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