When using a GCC cross-compiler from GNU/Linux to Windows with Ada support, the link names of pragma Import with Convention "stdcall" are not mangled correctly and thus linking to the Windows API does not work.
A small example is: [EMAIL PROTECTED] cat time.adb with Ada.Calendar; procedure Time is T : Ada.Calendar.Time; begin T := Ada.Calendar.Clock; end Time; [EMAIL PROTECTED] i586-mingw32msvc-gnatmake -f time i586-mingw32msvc-gcc -c time.adb i586-mingw32msvc-gnatbind -x time.ali i586-mingw32msvc-gnatlink time.ali Warning: resolving _Sleep by linking to [EMAIL PROTECTED] Use --enable-stdcall-fixup to disable these warnings Use --disable-stdcall-fixup to disable these fixups /usr/lib/gcc/i586-mingw32msvc/3.4.2/adalib/libgnat.a(s-osprim.o): In function `s ystem__os_primitives__clock': /tmp/bellonsn-mingw32/mingw32-3.4.2.20040916.1/build_dir/objs/gcc/ada/rts/s-ospr im.adb:147: undefined reference to `_QueryPerformanceCounter' /tmp/bellonsn-mingw32/mingw32-3.4.2.20040916.1/build_dir/objs/gcc/ada/rts/s-ospr im.adb:151: undefined reference to `_GetSystemTimeAsFileTime' ... and so on ... Danny Smith of MinGW suggested a small patch which works for me: --- gcc-3.4.2-20040916-1/gcc/ada/decl.c 2005-03-17 07:11:51.208188883 +0100 +++ gcc-3.4.2-20040916-1/gcc/ada/decl.c.patched 2005-03-17 07:11:40.675851093 +0100 @@ -3509,7 +3509,7 @@ if (list_length (gnu_return_list) == 1) gnu_return_type = TREE_TYPE (TREE_PURPOSE (gnu_return_list)); -#ifdef _WIN32 +#if TARGET_IS_PE_COFF if (Convention (gnat_entity) == Convention_Stdcall) { struct attrib *attr I hope you can apply this patch. -- Summary: "stdcall" imports are not handled correctly Product: gcc Version: 3.4.2 Status: UNCONFIRMED Severity: normal Priority: P2 Component: ada AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: sbellon at sbellon dot de CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-mingw32 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20515