Test for --version-script bug, known to be in at least ld 2.11.2 on netbsd and openbsd.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33819 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Michael Wetherell
parent
c03bf0c740
commit
e5d4b470c9
37
acinclude.m4
37
acinclude.m4
@ -437,7 +437,44 @@ AC_DEFUN([WX_VERSIONED_SYMBOLS],
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else
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wx_cv_version_script=no
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fi
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dnl There's a problem in some old linkers with --version-script that
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dnl can cause linking to fail when you have objects with vtables in
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dnl libs 3 deep. This is known to happen in netbsd and openbsd with
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dnl ld 2.11.2.
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dnl
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dnl To test for this we need to make some shared libs and
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dnl unfortunately we can't be sure of the right way to do that. If the
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dnl first two compiles don't succeed then it looks like the test isn't
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dnl working and the result is ignored, but if OTOH the first two
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dnl succeed but the third does not then the bug has been detected and
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dnl the --version-script flag is dropped.
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if test $wx_cv_version_script = yes
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then
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echo "struct B { virtual ~B() { } }; \
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struct D : public B { }; \
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void F() { D d; }" > conftest.cpp
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if AC_TRY_COMMAND([
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$CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) &&
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AC_TRY_COMMAND([
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$CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null])
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then
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if AC_TRY_COMMAND([
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$CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null])
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then
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wx_cv_version_script=yes
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else
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wx_cv_version_script=no
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fi
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fi
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fi
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rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
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rm -f conftest1.output conftest2.output conftest3.output
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])
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if test $wx_cv_version_script = yes ; then
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LDFLAGS_VERSIONING="-Wl,--version-script,$1"
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37
aclocal.m4
vendored
37
aclocal.m4
vendored
@ -450,7 +450,44 @@ AC_DEFUN([WX_VERSIONED_SYMBOLS],
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else
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wx_cv_version_script=no
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fi
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dnl There's a problem in some old linkers with --version-script that
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dnl can cause linking to fail when you have objects with vtables in
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dnl libs 3 deep. This is known to happen in netbsd and openbsd with
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dnl ld 2.11.2.
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dnl
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dnl To test for this we need to make some shared libs and
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dnl unfortunately we can't be sure of the right way to do that. If the
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dnl first two compiles don't succeed then it looks like the test isn't
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dnl working and the result is ignored, but if OTOH the first two
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dnl succeed but the third does not then the bug has been detected and
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dnl the --version-script flag is dropped.
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if test $wx_cv_version_script = yes
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then
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echo "struct B { virtual ~B() { } }; \
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struct D : public B { }; \
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void F() { D d; }" > conftest.cpp
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if AC_TRY_COMMAND([
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$CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) &&
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AC_TRY_COMMAND([
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$CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null])
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then
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if AC_TRY_COMMAND([
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$CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null])
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then
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wx_cv_version_script=yes
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else
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wx_cv_version_script=no
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fi
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fi
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fi
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rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
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rm -f conftest1.output conftest2.output conftest3.output
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])
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if test $wx_cv_version_script = yes ; then
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LDFLAGS_VERSIONING="-Wl,--version-script,$1"
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41
configure
vendored
41
configure
vendored
@ -29332,7 +29332,48 @@ else
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else
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wx_cv_version_script=no
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fi
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if test $wx_cv_version_script = yes
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then
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echo "struct B { virtual ~B() { } }; \
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struct D : public B { }; \
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void F() { D d; }" > conftest.cpp
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if { ac_try='
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$CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym >/dev/null 2>/dev/null'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } &&
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{ ac_try='
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$CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }
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then
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if { ac_try='
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$CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
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-Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }
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then
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wx_cv_version_script=yes
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else
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wx_cv_version_script=no
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fi
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fi
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fi
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rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
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rm -f conftest1.output conftest2.output conftest3.output
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fi
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echo "$as_me:$LINENO: result: $wx_cv_version_script" >&5
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