Enable/disable SystemV init code at compile time

* configure.ac: New option --enable-sysvinit. Disable the init
code if RUN_LVL is not available.
(PIES_SYSVINIT_ENABLED): New configuration define.
(PIES_COND_SYSVINIT): New condition
Print configuration settings summary.
* src/pies.h (is_sysvinit): Check for PIES_SYSVINIT_ENABLED.
(SYSVINIT_ACTIVE): New macro.
* grecs: Upgrade.
* src/Makefile.am: Conditionally link sysvinit-related code.
* src/cmdline.opt: Disable the --telinit option if sysvinit support
is not available.
(parse_options): Use SYSVINIT_ACTIVE in the conditional.
* src/comp.c (component_verify): Check if component definition is
allowed by the current state of the sysvinit support.
* src/ctl.c: Disable the /runlevel entry point if sysvinit support
is not compiled.
* src/diag.c (stderr_open): Make sure sysvinit-related code is not
compiled if the sysvinit support is not available.
* src/pies.c (config_syntax_tab): Add entry for CONF_INITTAB only if
sysvinit support is available.
(_cb_initdefault,_cb_runlevels): Remove. Use cb_initdefault and cb_runlevels
instead.
(component_keywords): Disable runlevels without sysvinit support.
(pies_keywords): Same for initdefault.
Use SYSVINIT_ACTIVE to suppress compilation of sysvinit code without
sysvinit support.
* src/progman.c: Use SYSVINIT_ACTIVE to suppress compilation of
sysvinit code without sysvinit support.
* src/sysvinit.c (cb_initdefault,cb_runlevels): New functions.

1 files changed, 46 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index ae3a9c7..3a23a1a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -125,6 +125,30 @@ AC_ARG_ENABLE([inetd],
 	       no)  ;;
 	       esac])
 
+sysvinit_status=maybe
+AC_ARG_ENABLE([sysvinit],
+ AC_HELP_STRING([--enable-sysvinit],
+                [compile the SystemV init support]),
+ [sysvinit_status=$enableval])
+
+if test $sysvinit_status = "maybe"; then
+  AC_TRY_COMPILE([#ifdef  HAVE_UTMPX_H
+# include <utmpx.h>
+#else
+# include <utmp.h>
+#endif
+],
+[int x = RUN_LVL;],
+[sysvinit_status=yes],
+[sysvinit_status=no])
+fi
+
+test $sysvinit_status = "no"
+PIES_SYSVINIT_ENABLED=$?
+AC_DEFINE_UNQUOTED([PIES_SYSVINIT_ENABLED],[$PIES_SYSVINIT_ENABLED],
+                   [whether SystemV init support is compiled])
+AM_CONDITIONAL([PIES_COND_SYSVINIT],[test $sysvinit_status = "yes"])
+
 AH_BOTTOM([
 # ifndef ATTRIBUTE_NORETURN
 #  define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
@@ -147,6 +171,28 @@ AC_CONFIG_TESTDIR(tests)
 AC_CONFIG_FILES([tests/Makefile tests/atlocal]) 
 AM_MISSING_PROG([AUTOM4TE], [autom4te])
 
+AC_CONFIG_COMMANDS([status],[
+cat <<EOF
+Configuration summary:
+
+URL of the control API ............................. $control_url
+PAM support ........................................ $status_pam
+SystemV initialization support ..................... $sysvinit_status
+EOF
+if test $sysvinit_status = "yes"; then
+  cat <<EOF
+URL of the SystemV init ............................ $sysvinit_control_url
+Emergency shell .................................... $emergency_shell
+EOF
+fi
+],
+[sysvinit_status=$sysvinit_status
+control_url=`echo "$DEFAULT_PIES_CONTROL_URL" | sed 's/\\\$/\\\\\$/g'`
+sysvinit_control_url=$DEFAULT_INIT_CONTROL_URL
+emergency_shell=$EMERGENCY_SHELL
+status_pam=$status_pam
+])
+
 AC_CONFIG_FILES([Makefile
                  gnu/Makefile
                  lib/Makefile