/[libtool]/libtool/libtool.m4
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revision 1.166.2.26 by gary, Tue Sep 11 03:09:14 2001 UTC revision 1.166.2.27 by gary, Tue Sep 11 03:18:52 2001 UTC
# Line 149  _LT_AC_LTCONFIG_HACK Line 149  _LT_AC_LTCONFIG_HACK
149    
150  ])  ])
151    
152    # AC_LIBTOOL_HEADER_ASSERT
153    # ------------------------
154    AC_DEFUN([AC_LIBTOOL_HEADER_ASSERT],
155    [AC_CACHE_CHECK([whether $CC supports assert without backlinking],
156        [lt_cv_func_assert_works],
157        [case $host in
158        *-*-solaris*)
159          if test "$GCC" = yes && test "$with_gnu_ld" != yes; then
160            case `$CC --version 2>/dev/null` in
161            [[12]].*) lt_cv_func_assert_works=no ;;
162            *)        lt_cv_func_assert_works=yes ;;
163            esac
164          fi
165          ;;
166        esac])
167    
168    if test "x$lt_cv_func_assert_works" = xyes; then
169      AC_CHECK_HEADERS(assert.h)
170    fi
171    ])# AC_LIBTOOL_HEADER_ASSERT
172    
173  # _LT_AC_CHECK_DLFCN  # _LT_AC_CHECK_DLFCN
174  # --------------------  # --------------------
175  AC_DEFUN([_LT_AC_CHECK_DLFCN],  AC_DEFUN([_LT_AC_CHECK_DLFCN],
# Line 1708  else Line 1729  else
1729      ;;      ;;
1730    
1731    solaris*)    solaris*)
1732      no_undefined_flag=' -z text'      # gcc --version < 3.0 without binutils cannot create self contained
1733        # shared libraries reliably, requiring libgcc.a to resolve some of
1734        # the object symbols generated in some cases.  Libraries that use
1735        # assert need libgcc.a to resolve __eprintf, for example.  Linking
1736        # a copy of libgcc.a into every shared library to guarantee resolving
1737        # such symbols causes other problems:  According to Tim Van Holder
1738        # <tim.van.holder@pandora.be>, C++ libraries end up with a separate
1739        # (to the application) exception stack for one thing.
1740        no_undefined_flag=' -z defs'
1741        if test "$GCC" = yes; then
1742          case `$CC --version 2>/dev/null` in
1743          [[12]].*)
1744            cat <<EOF 1>&2
1745    
1746    *** Warning: Releases of GCC earlier than version 3.0 cannot reliably
1747    *** create self contained shared libraries on Solaris systems, without
1748    *** introducing a dependency on libgcc.a.  Therefore, libtool is disabling
1749    *** -no-undefined support, which will at least allow you to build shared
1750    *** libraries.  However, you may find that when you link such libraries
1751    *** into an application without using GCC, you have to manually add
1752    *** \`gcc --print-libgcc-file-name\` to the link command.  We urge you to
1753    *** upgrade to a newer version of GCC.  Another option is to rebuild your
1754    *** current GCC to use the GNU linker from GNU binutils 2.9.1 or newer.
1755    
1756    EOF
1757            no_undefined_flag=
1758            ;;
1759          esac
1760        fi
1761      # $CC -shared without GNU ld will not create a library from C++      # $CC -shared without GNU ld will not create a library from C++
1762      # object files and a static libstdc++, better avoid it by now      # object files and a static libstdc++, better avoid it by now
1763      archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'      archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'

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