sys_ioctl, sys_select: fix link errors

[Bruno Haible]

On mingw, I get link errors:

g++ -mno-cygwin    -L/usr/local/mingw/lib -o test-sys_ioctl-c++.exe 
test-sys_ioctl-c++.o ../gllib/libgnu.a   
test-sys_ioctl-c++.o:test-sys_ioctl-c++.cc:(.data+0x4): undefined reference to 
`_ioctl'
collect2: ld returned 1 exit status
make[4]: *** [test-sys_ioctl-c++.exe] Error 1

Then later:

g++ -mno-cygwin    -L/usr/local/mingw/lib -o test-sys_ioctl-c++.exe 
test-sys_ioctl-c++.o ../gllib/libgnu.a   
../gllib/libgnu.a(ioctl.o): In function `rpl_ioctl':
/home/bruno/testdir1/gllib/ioctl.c:46: undefined reference to `_ioctlsoc...@12'
../gllib/libgnu.a(ioctl.o): In function `rpl_ioctl':
/home/bruno/testdir1/gllib/w32sock.h:34: undefined reference to 
`_wsagetlaster...@0'
collect2: ld returned 1 exit status
make[4]: *** [test-sys_ioctl-c++.exe] Error 1

and:

g++ -mno-cygwin    -L/usr/local/mingw/lib -o test-sys_select-c++.exe 
test-sys_select-c++.o ../gllib/libgnu.a   
../gllib/libgnu.a(select.o): In function `rpl_select':
/home/bruno/testdir1/gllib/select.c:93: undefined reference to 
`_wsaenumnetworkeve...@12'
/home/bruno/testdir1/gllib/select.c:360: undefined reference to 
`_wsaeventsel...@12'
/home/bruno/testdir1/gllib/select.c:381: undefined reference to `_sel...@20'
...
collect2: ld returned 1 exit status
make[4]: *** [test-sys_select-c++.exe] Error 1


This patch fixes all three errors.


2010-03-28  Bruno Haible  <br...@clisp.org>

        Fix link errors on mingw.
        * lib/sys_ioctl.in.h (ioctl): Fix declaration idiom.
        * modules/sys_ioctl-tests (Makefile.am): Link test-sys_ioctl-c++ with
        $(LIBSOCKET).
        * modules/sys_select-tests (Makefile.am): Link test-sys_select-c++ with
        $(LIBSOCKET).

--- lib/sys_ioctl.in.h.orig     Sun Mar 28 14:16:35 2010
+++ lib/sys_ioctl.in.h  Sun Mar 28 14:10:17 2010
@@ -49,13 +49,18 @@
 #   undef ioctl
 #   define ioctl rpl_ioctl
 #  endif
+_GL_FUNCDECL_RPL (ioctl, int,
+                  (int fd, int request, ... /* {void *,char *} arg */));
+_GL_CXXALIAS_RPL (ioctl, int,
+                  (int fd, int request, ... /* {void *,char *} arg */));
+# else
 _GL_FUNCDECL_SYS (ioctl, int,
                   (int fd, int request, ... /* {void *,char *} arg */));
-# endif
 /* Need to cast, because on glibc systems, the second parameter is
                                 unsigned long int request.  */
 _GL_CXXALIAS_SYS_CAST (ioctl, int,
                        (int fd, int request, ... /* {void *,char *} arg */));
+# endif
 _GL_CXXALIASWARN (ioctl);
 #elif @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
 # undef ioctl
--- modules/sys_ioctl-tests.orig        Sun Mar 28 14:16:35 2010
+++ modules/sys_ioctl-tests     Sun Mar 28 14:13:55 2010
@@ -15,5 +15,5 @@
 TESTS += test-sys_ioctl-c++
 check_PROGRAMS += test-sys_ioctl-c++
 test_sys_ioctl_c___SOURCES = test-sys_ioctl-c++.cc
-test_sys_ioctl_c___LDADD = $(LDADD) $(LIBINTL) $(LIB_CLOCK_GETTIME)
+test_sys_ioctl_c___LDADD = $(LDADD) $(LIBINTL) $(LIBSOCKET) 
$(LIB_CLOCK_GETTIME)
 endif
--- modules/sys_select-tests.orig       Sun Mar 28 14:16:35 2010
+++ modules/sys_select-tests    Sun Mar 28 14:15:13 2010
@@ -15,5 +15,5 @@
 TESTS += test-sys_select-c++
 check_PROGRAMS += test-sys_select-c++
 test_sys_select_c___SOURCES = test-sys_select-c++.cc
-test_sys_select_c___LDADD = $(LDADD) $(LIBINTL) $(LIB_NANOSLEEP)
+test_sys_select_c___LDADD = $(LDADD) $(LIBINTL) $(LIBSOCKET) $(LIB_NANOSLEEP)
 endif