Hi all, I recently ugrade to gcc 3.3.1-2 gcc-mingw 20030911-3
But now got some problems linking MSVC compiled static libraries with the gcc and the -mno-cygwin option here is an example where MS.c/MS.h which contains a very simple function (plus, see code below) is compiled into MS.lib using Visual Studio $ CL /c MS.c $ LINK -lib MS.obj I then obtain MS.lib $ nm MS.lib MS.obj: 00000000 i .drectve 00000000 t .text 000a2306 a @comp.id 00000000 T _plus Then I take a main.c source that calls the function 'plus' but compiled with gcc. $ gcc -mno-cygwin main.c -o main MS.lib Warning: .drectve `-defaultlib:LIBC ' unrecognized Warning: .drectve `-defaultlib:OLDNAMES ' unrecognized Cannot export _plus: symbol not found collect2: ld returned 1 exit status This used to work with the previous versions of GCC/Mingw I was using. Is there something I am doing wrong? Is it possible that the upgrade to the new version of gcc/mingw went wrong? Here is the output of gcc in verbose mode: $ gcc -v -mno-cygwin main.c -o main MS.lib Reading specs from /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/specs Configured with: /netrel/src/gcc-3.3.1-2/configure --enable-languages=c,c++,f77,java --enable-libgcj --enable-threads=posix --with-system-zlib --enable-nls --without-included-gettext --enable-interpreter --enable-sjlj-exceptions --disable-version-specific-runtime-libs --enable-shared --build=i686-pc-linux --host=i686-pc-cygwin --target=i686-pc-cygwin --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib --includedir=/nonexistent/include -libexecdir=/usr/sbin Thread model: posix gcc version 3.3.1 (cygming special) /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/cc1.exe -quiet -v -D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=1 -D__MSVCRT__ -D__MINGW32__ -DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ -DWINNT -idirafter /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/../../../../include/w32api -idirafter usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/../../../../i686-pc-mingw32/lib/../../include/w32api main.c -quiet -dumpbase main.c -mno-cygwin -auxbase main -version -o tmp/ccit4dum.s GNU C version 3.3.1 (cygming special) (i686-pc-cygwin) compiled by GNU C version 3.3.1 (cygming special). GGC heuristics: --param ggc-min-expand=99 --param ggc-min-heapsize=130946 ignoring nonexistent directory "/usr/local/include/mingw" ignoring duplicate directory "/usr/include/mingw" ignoring duplicate directory "/usr/i686-pc-mingw32/lib/../../include/w32api" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/include /usr/i686-pc-mingw32/include /usr/include/w32api End of search list. /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/../../../../i686-pc-mingw32/bin/as.exe --traditional-format -o /tmp/ccGGljbC.o /tmp/ccit4dum.s /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/collect2.exe -Bdynamic -o main.exe /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/../../../../i686-pc-mingw32/lib/crt2.o /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/crtbegin.o -L/usr/lib/gcc-lib/i686-pc-mingw32/3.3.1 -L/usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/../../../../i686-pc-mingw32/lib -L/usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/../../.. /tmp/ccGGljbC.o MS.lib -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt -lmingw32 -luser32 -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt /usr/lib/gcc-lib/i686-pc-mingw32/3.3.1/crtend.o Warning: .drectve `-defaultlib:LIBC ' unrecognized Warning: .drectve `-defaultlib:OLDNAMES ' unrecognized Cannot export _plus: symbol not found collect2: ld returned 1 exit status ------------------------------------------------------------------------------- Now here are the sources... MS.c: #include "MS.h" __declspec(dllexport) int plus(const int a, const int b) { return a+b; } MS.h: #ifdef __MS_H_ #define __MS_H_ 1 int plus(const int a, const int b); #endif and main.c: #include "MS.h" int main(int argc, char *argv[]) { int a = 5; int b = 6; int c = plus(a,b); printf ("%d + %d = %d\n", a, b, c); return 0; } ------------------------------------------------------------------------------------------------------------- Jean-Michel Rouet (PhD), Senior Scientist Philips France / Medical Imaging Systems (Medisys) Research Group 51, rue Carnot - BP 301 - 92156 Suresnes Cedex - France Phone: (+33) 1.47.28.36.13 Fax: (+33) 1.47.28.36.00 mailto:[EMAIL PROTECTED] -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/