autogen: add shortcut for building with clang

[elogind.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 8d16bd459864055451c679e4917e0229946f872e..5e30af3d6b7e0d45bbd09ff0893046e0081ac82c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,8 @@ AC_PATH_PROG([KMOD], [kmod], [/usr/bin/kmod])
 
 AC_PATH_PROG([KEXEC], [kexec], [/usr/sbin/kexec])
 
+M4_DEFINES=
+
 # gtkdocize greps for '^GTK_DOC_CHECK', so it needs to be on its own line
 m4_ifdef([GTK_DOC_CHECK], [
 GTK_DOC_CHECK([1.18],[--flavour no-tmpl])],
@@ -127,6 +129,7 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
         -Winit-self \
         -Wdeclaration-after-statement \
         -Wfloat-equal \
+        -Wsuggest-attribute=noreturn \
         -Wmissing-prototypes \
         -Wstrict-prototypes \
         -Wredundant-decls \
@@ -144,6 +147,7 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
         -Wno-unused-result \
         -Werror=overflow \
         -Wdate-time \
+        -Wnested-externs \
         -ffast-math \
         -fno-common \
         -fdiagnostics-show-option \
@@ -750,14 +754,6 @@ if test "x$enable_timedated" != "xno"; then
 fi
 AM_CONDITIONAL(ENABLE_TIMEDATED, [test "$have_timedated" = "yes"])
 
-# ------------------------------------------------------------------------------
-have_bus_driverd=no
-AC_ARG_ENABLE(bus_driverd, AS_HELP_STRING([--disable-bus-driverd], [disable systemd bus-driver daemon]))
-if test "x$enable_bus_driverd" != "xno"; then
-        have_bus_driverd=yes
-fi
-AM_CONDITIONAL(ENABLE_BUS_DRIVERD, [test "$have_bus_driverd" = "yes"])
-
 # ------------------------------------------------------------------------------
 have_localed=no
 AC_ARG_ENABLE(localed, AS_HELP_STRING([--disable-localed], [disable locale daemon]))
@@ -814,6 +810,7 @@ AC_ARG_ENABLE(kdbus, AS_HELP_STRING([--enable-kdbus], [do connect to kdbus by de
 if test "x$enable_kdbus" == "xyes"; then
         AC_DEFINE(ENABLE_KDBUS, 1, [Define if kdbus support is to be enabled])
         have_kdbus=yes
+        M4_DEFINES="$M4_DEFINES -DENABLE_KDBUS"
 fi
 AM_CONDITIONAL(ENABLE_KDBUS, [test "$have_kdbus" = "yes"])
 
@@ -929,7 +926,6 @@ AM_CONDITIONAL(ENABLE_MANPAGES, [test "x$have_manpages" = "xyes"])
 # Location of the init scripts as mandated by LSB
 SYSTEM_SYSVINIT_PATH=/etc/init.d
 SYSTEM_SYSVRCND_PATH=/etc/rc.d
-M4_DEFINES=
 
 AC_ARG_WITH([sysvinit-path],
         [AS_HELP_STRING([--with-sysvinit-path=PATH],