[Bug ada/20530] New: gnatlink does not respect -mno-cygwin

["rolf dot ebert dot gcc at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

despite passing -mno-cygwin as a gnatmake option and additionally as a gnatlink 
option, gnatlink adds the cygwin path to adalib to the link command. The libgnat 
 is found first in the cygwin path and not in the mingw path.  The link 
consequently fails.

The problem is present on both gcc-3.3.3 and gcc-3.4.1

$ gnatmake -mno-cygwin hello -largs -v -v -mno-cygwin
gcc -c -mno-cygwin hello.adb
gnatbind -x hello.ali
gnatlink -v -v -mno-cygwin hello.ali

GNATLINK 3.3.3 (cygwin special) Copyright 1996-2002 Free Software Foundation, In
c.
gcc -c -gnatA -gnatWb -gnatiw -mno-cygwin -v -gnatws b~hello.adb
Reading specs from /usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/specs
Configured with: /gcc/gcc-3.3.3-3/configure --verbose --prefix=/usr --exec-prefi
x=/usr --sysconfdir=/etc --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/s
hare/man --infodir=/usr/share/info --enable-languages=c,ada,c++,d,f77,java,objc,
pascal --enable-nls --without-included-gettext --enable-libgcj --with-system-zli
b --enable-interpreter --enable-threads=posix --enable-java-gc=boehm --enable-sj
lj-exceptions --disable-version-specific-runtime-libs --disable-win32-registry
Thread model: posix
gcc version 3.3.3 (cygwin special)
 /usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/gnat1.exe -quiet -dumpbase b~hello.adb -
gnatA -gnatWb -gnatiw -gnatws -mno-cygwin b~hello.adb -o /c/DOKUME~1/EBERT/LOKAL
E~1/Temp/ccsNrn8f.s
 /usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/../../../../i686-pc-mingw32/bin/as.exe -
-traditional-format -o b~hello.o /c/DOKUME~1/EBERT/LOKALE~1/Temp/ccsNrn8f.s
/usr/bin/gcc.exe b~hello.o ./hello.o -v -mno-cygwin -o hello.exe -L./ -L/usr/lib
/gcc-lib/i686-pc-cygwin/3.3.3/adalib/ /usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adal
ib/libgnat.a
Reading specs from /usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/specs
Configured with: /gcc/gcc-3.3.3-3/configure --verbose --prefix=/usr --exec-prefi
x=/usr --sysconfdir=/etc --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/s
hare/man --infodir=/usr/share/info --enable-languages=c,ada,c++,d,f77,java,objc,
pascal --enable-nls --without-included-gettext --enable-libgcj --with-system-zli
b --enable-interpreter --enable-threads=posix --enable-java-gc=boehm --enable-sj
lj-exceptions --disable-version-specific-runtime-libs --disable-win32-registry
Thread model: posix
gcc version 3.3.3 (cygwin special)
 /usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/collect2.exe -Bdynamic -o hello.exe /usr
/lib/gcc-lib/i686-pc-mingw32/3.3.3/../../../../i686-pc-mingw32/lib/crt2.o /usr/l
ib/gcc-lib/i686-pc-mingw32/3.3.3/crtbegin.o -L./ -L/usr/lib/gcc-lib/i686-pc-cygw
in/3.3.3/adalib/ -L/usr/lib/gcc-lib/i686-pc-mingw32/3.3.3 -L/usr/lib/gcc-lib/i68
6-pc-mingw32/3.3.3/../../../../i686-pc-mingw32/lib -L/usr/lib/gcc-lib/i686-pc-mi
ngw32/3.3.3/../../.. b~hello.o ./hello.o /usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/a
dalib/libgnat.a -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt -lmingw32 -luser32
 -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt /
usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/crtend.o
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(cio.o)(.text+0x7): undefi
ned reference to `___getreent'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(cio.o)(.text+0x67): undef
ined reference to `___getreent'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(cio.o)(.text+0x97): undef
ined reference to `___getreent'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(cio.o)(.text+0xc7): undef
ined reference to `___getreent'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(cstreams.o)(.text+0x97):
undefined reference to `___getreent'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(cstreams.o)(.text+0xb7):
more undefined references to `___getreent' follow
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(sysdep.o)(.text+0xd4): un
defined reference to `_tcgetattr'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(sysdep.o)(.text+0xfe): un
defined reference to `_tcsetattr'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(sysdep.o)(.text+0x156): u
ndefined reference to `_tcsetattr'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(sysdep.o)(.text+0x25): un
defined reference to `_ttyname'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(sysdep.o)(.text+0x1e5): u
ndefined reference to `_localtime_r'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0x7e7): u
ndefined reference to `_fork'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0x81b): u
ndefined reference to `_waitpid'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0x860): u
ndefined reference to `_fork'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0x8c2): u
ndefined reference to `_waitpid'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0x901): u
ndefined reference to `_waitpid'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0xa5): un
defined reference to `_readlink'
/usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/adalib/libgnat.a(adaint.o)(.text+0xb5): un
defined reference to `_symlink'
collect2: ld returned 1 exit status
gnatlink: cannot call /usr/bin/gcc.exe
gnatmake: *** link failed.

-- 
           Summary: gnatlink does not respect -mno-cygwin
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rolf dot ebert dot gcc at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20530