chiark / gitweb /
time-util: introduce usec_sub()
[elogind.git] / configure.ac
index d410162462428cf398a9078c0f8c99819a266475..241390cb6a6db9d2d8f4ed0cedb199bbcfe90eb1 100644 (file)
@@ -20,7 +20,7 @@
 AC_PREREQ([2.64])
 
 AC_INIT([elogind],
-        [226.2],
+        [228.3],
         [https://github.com/elogind/elogind/issues],
         [elogind],
         [https://github.com/elogind/elogind])
@@ -59,7 +59,7 @@ SET_ARCH(IA32, i*86*)
 SET_ARCH(MIPS, mips*)
 SET_ARCH(AARCH64, aarch64*)
 
-# i18n stuff for the PolicyKit policy files, heck whether intltool can be found, disable NLS otherwise
+# i18n stuff for the PolicyKit policy files, check whether intltool can be found, disable NLS otherwise
 AC_CHECK_PROG(intltool_found, [intltool-merge], [yes], [no])
 AS_IF([test x"$intltool_found" != xyes],
       [AS_IF([test x"$enable_nls" = xyes],
@@ -113,10 +113,17 @@ fi
 # ------------------------------------------------------------------------------
 # Find running cgroup controller
 with_cgroupctrl=
-AS_IF(  [test -f /proc/self/cgroup],
-        [with_cgroupctrl=`grep "^1:name=" /proc/self/cgroup | cut -d ':' -f 2`])
+AS_IF(  [test -f /proc/self/cgroup], [
+        # If the init system is a cgroup controler, it will be position 1.
+        # Secondary controllers, like cgmanager, do not work.
+        with_cgroupctrl=`grep "^1:name=" /proc/self/cgroup | cut -d ':' -f 2`
+        AS_IF(  [test -z "$with_cgroupctrl"], [
+                # Try to be our own cgroup controller
+                with_cgroupctrl="name=elogind"
+        ])
+])
 AS_IF(  [test -z "$with_cgroupctrl"],
-        [with_cgroupctrl="name=elogind"])
+        AC_MSG_ERROR([No running cgroup controller found]))
 
 
 # ------------------------------------------------------------------------------
@@ -168,7 +175,6 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
         -Werror=implicit-function-declaration \
         -Werror=missing-declarations \
         -Werror=return-type \
-        -Werror=shadow \
         -Wstrict-prototypes \
         -Wredundant-decls \
         -Wmissing-noreturn \
@@ -193,18 +199,42 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
         -fPIE \
         --param=ssp-buffer-size=4])
 
+CC_CHECK_FLAG_APPEND([with_cflags], [CFLAGS], [-Werror=shadow], [
+#include <time.h>
+#include <inttypes.h>
+typedef uint64_t usec_t;
+usec_t now(clockid_t clock);
+int main(void) {
+        struct timespec now;
+        return 0;
+}
+])
+
 AS_CASE([$CC], [*clang*],
         [CC_CHECK_FLAGS_APPEND([with_cppflags], [CPPFLAGS], [\
                -Wno-typedef-redefinition \
                -Wno-gnu-variable-sized-type-not-at-end \
         ])])
 
-dnl AS_CASE([$CFLAGS], [*-O[[12345sz\ ]]*],
-dnl         [CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
-dnl                -flto])],
-dnl         [AC_MSG_RESULT([skipping -flto, optimization not enabled])])
-dnl AC_SUBST([OUR_CFLAGS], "$with_cflags $sanitizer_cflags")
 
+# ------------------------------------------------------------------------------
+# On some distributions -flto, even if available, leads to linking errors.
+# We therefore make it optional
+have_lto=no
+AC_ARG_ENABLE([lto],
+        [AS_HELP_STRING([--disable-lto], [Disable link time optimization (default: test)])])
+
+AS_IF([test "x$enable_lto" != "xno"], [
+        AS_CASE([$CFLAGS], [*-O[[12345sz\ ]]*],
+                [have_lto=yes],
+                [AC_MSG_RESULT([skipping -flto, optimization not enabled])])
+        AS_IF([test "$have_lto" != "no"],
+                [CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [-flto])]
+        )
+        AC_SUBST([OUR_CFLAGS], "$with_cflags $sanitizer_cflags")
+])
+
+# ------------------------------------------------------------------------------
 AS_CASE([$CFLAGS], [*-O[[12345sz\ ]]*],
         [CC_CHECK_FLAGS_APPEND([with_cppflags], [CPPFLAGS], [\
                -Wp,-D_FORTIFY_SOURCE=2])],
@@ -289,13 +319,11 @@ AS_IF([test "$have_python" != "yes"], [
       AS_IF([test "$with_python" != "no"],
             [AC_MSG_WARN([*** python support not found, some documentation cannot be built])])
 ])
-
 AM_CONDITIONAL([HAVE_PYTHON], [test "x$have_python" = "xyes"])
 
 # ------------------------------------------------------------------------------
 
 AC_CHECK_HEADERS([sys/capability.h], [], [AC_MSG_ERROR([*** POSIX caps headers not found])])
-AC_CHECK_HEADERS([linux/btrfs.h], [], [])
 AC_CHECK_HEADERS([linux/memfd.h], [], [])
 
 AC_CHECK_HEADERS([printf.h], [have_printf_h=yes], [have_printf_h=no])
@@ -309,20 +337,11 @@ AS_IF([test x$have_printf_h = xyes], [
 dnl AC_SEARCH_LIBS([clock_gettime], [rt], [], [])
 dnl AC_SEARCH_LIBS([mq_unlink], [rt], [], [])
 
-AC_ARG_WITH([libcap],
-            AS_HELP_STRING([--with-libcap=DIR], [Prefix for libcap]),
-            [CAP_LDFLAGS="-L$with_libcap/lib"],
-            [CAP_LDFLAGS=""])
 save_LIBS="$LIBS"
-save_LDFLAGS="$LDFLAGS"
 LIBS=
-LDFLAGS="$LDFLAGS $CAP_LDFLAGS"
 AC_SEARCH_LIBS([cap_init], [cap], [], [AC_MSG_ERROR([*** POSIX caps library not found])])
 CAP_LIBS="$LIBS"
 AC_SUBST(CAP_LIBS)
-AC_SUBST(CAP_LDFLAGS)
-LIBS="$save_LIBS"
-LDFLAGS="$save_LDFLAGS"
 
 AC_CHECK_FUNCS([memfd_create])
 AC_CHECK_FUNCS([__secure_getenv secure_getenv])
@@ -345,11 +364,11 @@ AC_CHECK_DECLS([IFLA_INET6_ADDR_GEN_MODE,
                 IFLA_BOND_AD_INFO,
                 IFLA_VLAN_PROTOCOL,
                 IFLA_VXLAN_REMCSUM_NOPARTIAL,
-                IFLA_VXLAN_LOCAL6,
                 IFLA_IPTUN_ENCAP_DPORT,
                 IFLA_GRE_ENCAP_DPORT,
                 IFLA_BRIDGE_VLAN_INFO,
                 IFLA_BRPORT_LEARNING_SYNC,
+                IFLA_BR_PRIORITY,
                 NDA_IFINDEX,
                 IFA_FLAGS],
 [], [], [[
@@ -515,12 +534,17 @@ if test "x${have_smack}" = xauto; then
         have_smack=yes
 fi
 
+have_smack_run_label=no
 AC_ARG_WITH(smack-run-label,
 AS_HELP_STRING([--with-smack-run-label=STRING],
-        [run elogind --system itself with a specific SMACK label]),
-        [AC_DEFINE_UNQUOTED(SMACK_RUN_LABEL, ["$withval"], [Run elogind itself with SMACK label])],
+        [run systemd --system itself with a specific SMACK label]),
+        [AC_DEFINE_UNQUOTED(SMACK_RUN_LABEL, ["$withval"], [Run systemd itself with SMACK label]) have_smack_run_label=yes],
         [])
 
+if test "x${have_smack_run_label}" = xyes; then
+        M4_DEFINES="$M4_DEFINES -DHAVE_SMACK_RUN_LABEL"
+fi
+
 AC_ARG_WITH(smack-default-process-label,
 AS_HELP_STRING([--with-smack-default-process-label=STRING],
         [default SMACK label for executed processes]),
@@ -575,11 +599,6 @@ AM_CONDITIONAL(ENABLE_KDBUS, [test "$have_kdbus" = "yes"])
 # ------------------------------------------------------------------------------
 AC_CHECK_HEADERS_ONCE([valgrind/memcheck.h valgrind/valgrind.h])
 
-# ------------------------------------------------------------------------------
-PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.22.0 gobject-2.0 >= 2.22.0 gio-2.0],
-                  [have_glib=yes], [have_glib=no])
-AS_IF([test "x$have_glib" = "xyes"], [ AC_DEFINE(HAVE_GLIB, 1, [Define if glib is available]) ])
-
 # ------------------------------------------------------------------------------
 have_manpages=no
 AC_ARG_ENABLE(manpages, AS_HELP_STRING([--disable-manpages], [disable manpages]))
@@ -738,6 +757,7 @@ AC_MSG_RESULT([
         man pages:               ${have_manpages}
         test coverage:           ${have_coverage}
         Split /usr:              ${enable_split_usr}
+        Link time optimization:  ${have_lto}
         extra debugging:         ${enable_debug}
         cgroup controller:       ${with_cgroupctrl}