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Check for -wrap support in the linker

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Allows unit tests to be built with non-gnu-linkers that
also have -wrap support

Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Alan Coopersmith 2009-09-15 21:13:00 -07:00 committed by Peter Hutterer
parent e2c6455180
commit 715953bf5c
1 changed files with 31 additions and 6 deletions
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37
configure.ac
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@ -1173,20 +1173,45 @@ if test "x$DEBUGGING" = xyes; then
fi
AM_CONDITIONAL(DEBUG, [test "x$DEBUGGING" = xyes])
# If unittests aren't explicitly disabled, check for required support
if test "x$UNITTESTS" != xno ; then
PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.16],
[HAVE_GLIB=yes], [HAVE_GLIB=no])
# Check if linker supports -wrap, passed via compiler flags
# When cross-compiling, reports no, since unit tests run from
# "make check", so would be running on build machine, not target
AC_MSG_CHECKING([whether the linker supports -wrap])
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,-wrap,exit"
AC_RUN_IFELSE([AC_LANG_PROGRAM([[
void __wrap_exit (int s)
{
__real_exit (0);
}]],
[[exit (1);]])],
[linker_can_wrap="yes"],
[linker_can_wrap="no"],
[linker_can_wrap="no"])
AC_MSG_RESULT([$linker_can_wrap])
LDFLAGS="$save_LDFLAGS"
fi
if test "x$UNITTESTS" = xauto; then
PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.16], [HAVE_GLIB=yes], [HAVE_GLIB=no])
if test "x$HAVE_GLIB" = xyes && test "x$with_gnu_ld" = xyes; then
if test "x$HAVE_GLIB" = xyes && test "x$linker_can_wrap" = xyes; then
UNITTESTS=yes
else
UNITTESTS=no
fi
fi
if test "x$UNITTESTS" = xyes; then
AC_DEFINE(UNITTESTS, 1, [Enable unit tests])
PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.16])
if test "x$with_gnu_ld" = xno; then
AC_MSG_ERROR([GNU ld required to build unit tests])
if test "x$HAVE_GLIB" = xno; then
AC_MSG_ERROR([glib required to build unit tests])
fi
if test "x$linker_can_wrap" = xno; then
AC_MSG_ERROR([ld -wrap support required to build unit tests])
fi
AC_DEFINE(UNITTESTS, 1, [Enable unit tests])
AC_SUBST([GLIB_LIBS])
AC_SUBST([GLIB_CFLAGS])
fi