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Added a check for the -R linker option.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10056 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Criswell 2003-11-17 19:46:02 +00:00
parent 444fdea19d
commit cb7a1eba45
3 changed files with 70 additions and 1 deletions
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18
autoconf/aclocal.m4 vendored
View File

@ -6244,4 +6244,20 @@ AC_DEFUN([AC_C_PRINTF_A],
fi
])
#
# Determine if the system can handle the -R option being passed to the linker.
#
AC_DEFUN([AC_LINK_USE_R],
[
AC_LANG_SAVE
AC_LANG_C
oldcflags=${CFLAGS}
CFLAGS="${CFLAGS} -Wl,-R."
AC_LINK_IFELSE([int main() { return 0;}],[ac_cv_link_use_r=yes],[ac_cv_link_se_r=no])
CFLAGS=${oldcflags}
AC_LANG_RESTORE
if test "$ac_cv_link_use_r = yes"
then
AC_DEFINE([HAVE_LINK_R],[1])
fi
])

3
autoconf/configure.ac
View File

@ -523,6 +523,9 @@ dnl these checks should go away.
AC_CHECK_FUNC(mmap,,AC_MSG_ERROR([Function mmap() required but not found]))
AC_CHECK_FUNC(mprotect,,AC_MSG_ERROR([Function mprotect() required but not found]))
dnl Determine if the linker supports the -R option.
AC_LINK_USE_R()
dnl **************************************************************************
dnl * Enable various compile-time options
dnl **************************************************************************

50
configure vendored
View File

@ -22980,6 +22980,56 @@ fi
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
oldcflags=${CFLAGS}
CFLAGS="${CFLAGS} -Wl,-R."
cat >conftest.$ac_ext <<_ACEOF
int main() { return 0;}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_link_use_r=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_link_se_r=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
CFLAGS=${oldcflags}
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
if test "$ac_cv_link_use_r = yes"
then
cat >>confdefs.h <<\_ACEOF
#define HAVE_LINK_R 1
_ACEOF
fi
# Check whether --enable-purify or --disable-purify was given.
if test "${enable_purify+set}" = set; then
enableval="$enable_purify"