1 files changed, 69 insertions, 3 deletions

diff --git a/configure.ac b/configure.ac
index 5db3013de..7e0584d2c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -93,6 +93,7 @@ AC_SUBST([LD])
 AC_C_INLINE
 
 AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [#include <limits.h>])
+AC_CHECK_DECL([LONG_LONG_MAX], [have_long_long_max=1], , [#include <limits.h>])
 AC_CHECK_DECL([SYSTR_POLICY_KILL], [have_systr_policy_kill=1], , [
         #include <sys/types.h>
         #include <sys/param.h>
@@ -413,6 +414,7 @@ AC_CHECK_HEADERS([ \
         string.h \
         strings.h \
         sys/bitypes.h \
+        sys/byteorder.h \
         sys/bsdtty.h \
         sys/cdefs.h \
         sys/dir.h \
@@ -2047,6 +2049,19 @@ AC_SEARCH_LIBS([nanosleep], [rt posix4], [AC_DEFINE([HAVE_NANOSLEEP], [1],
 AC_SEARCH_LIBS([clock_gettime], [rt],
         [AC_DEFINE([HAVE_CLOCK_GETTIME], [1], [Have clock_gettime])])
 
+dnl check if we need -D_REENTRANT for localtime_r declaration.
+AC_CHECK_DECL([localtime_r], [],
+        [ saved_CPPFLAGS="$CFLAGS"
+          CPPFLAGS="$CPPFLAGS -D_REENTRANT"
+          unset ac_cv_have_decl_localtime_r
+          AC_CHECK_DECL([localtime_r], [],
+                [ CPPFLAGS="$saved_CPPFLAGS" ],
+                [ #include <time.h> ]
+          )
+        ],
+        [ #include <time.h> ]
+)
+
 dnl Make sure prototypes are defined for these before using them.
 AC_CHECK_DECL([strsep],
         [AC_CHECK_FUNCS([strsep])],
@@ -2066,10 +2081,11 @@ AC_CHECK_DECL([tcsendbreak],
 
 AC_CHECK_DECLS([h_errno], , ,[#include <netdb.h>])
 
-AC_CHECK_DECLS([SHUT_RD], , ,
+AC_CHECK_DECLS([SHUT_RD, getpeereid], , ,
         [
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <unistd.h>
         ])
 
 AC_CHECK_DECLS([O_NONBLOCK], , ,
@@ -2578,6 +2594,45 @@ static void sighandler(int sig) { _exit(1); }
         )
 fi
 
+AC_MSG_CHECKING([if SA_RESTARTed signals interrupt select()])
+AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM([[
+#ifdef HAVE_SYS_SELECT
+# include <sys/select.h>
+#endif
+#include <sys/types.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <signal.h>
+static void sighandler(int sig) { }
+                ]], [[
+        int r;
+        pid_t pid;
+        struct sigaction sa;
+
+        sa.sa_handler = sighandler;
+        sa.sa_flags = SA_RESTART;
+        (void)sigaction(SIGTERM, &sa, NULL);
+        if ((pid = fork()) == 0) { /* child */
+                pid = getppid();
+                sleep(1);
+                kill(pid, SIGTERM);
+                sleep(1);
+                if (getppid() == pid) /* if parent did not exit, shoot it */
+                        kill(pid, SIGKILL);
+                exit(0);
+        } else { /* parent */
+                r = select(0, NULL, NULL, NULL, NULL);
+        }
+        exit(r == -1 ? 0 : 1);
+        ]])],
+        [AC_MSG_RESULT([yes])],
+        [AC_MSG_RESULT([no])
+         AC_DEFINE([NO_SA_RESTART], [1],
+            [SA_RESTARTed signals do no interrupt select])],
+        [AC_MSG_WARN([cross compiling: assuming yes])]
+)
+
 AC_CHECK_FUNCS([getpgrp],[
         AC_MSG_CHECKING([if getpgrp accepts zero args])
         AC_COMPILE_IFELSE(
@@ -2883,6 +2938,7 @@ if test "x$openssl" = "xyes" ; then
                 EVP_PKEY_get0_RSA \
                 EVP_MD_CTX_new \
                 EVP_MD_CTX_free \
+                EVP_chacha20 \
         ])
 
         if test "x$openssl_engine" = "xyes" ; then
@@ -3161,6 +3217,10 @@ AC_MSG_RESULT([$enable_pkcs11])
 AC_MSG_CHECKING([whether to enable U2F])
 if test "x$enable_sk" = "xyes" ; then
         AC_DEFINE([ENABLE_SK], [], [Enable for U2F/FIDO support])
+        AC_SUBST(SK_DUMMY_LIBRARY, [regress/misc/sk-dummy/sk-dummy.so])
+else
+        # Do not try to build sk-dummy library.
+        AC_SUBST(SK_DUMMY_LIBRARY, [""])
 fi
 AC_MSG_RESULT([$enable_sk])
 
@@ -3190,9 +3250,15 @@ if test "x$enable_sk" = "xyes" -a "x$enable_sk_internal" = "xyes" ; then
                         AC_DEFINE([ENABLE_SK_INTERNAL], [],
                             [Enable for built-in U2F/FIDO support])
                         enable_sk="built-in"
-                ], [ ],
+                ], [ AC_MSG_ERROR([no usable libfido2 found]) ],
                 [ $OTHERLIBS ]
         )
+        AC_CHECK_HEADER([fido.h], [],
+                AC_MSG_ERROR([missing fido.h from libfido2]))
+        AC_CHECK_HEADER([fido/credman.h], [],
+                AC_MSG_ERROR([missing fido/credman.h from libfido2]),
+                [#include <fido.h>]
+        )
 fi
 
 AC_CHECK_FUNCS([ \
@@ -3645,7 +3711,7 @@ if test "x$ac_cv_sizeof_long_long_int" = "x4" ; then
 fi
 
 # compute LLONG_MIN and LLONG_MAX if we don't know them.
-if test -z "$have_llong_max"; then
+if test -z "$have_llong_max" && test -z "$have_long_long_max"; then
         AC_MSG_CHECKING([for max value of long long])
         AC_RUN_IFELSE(
                 [AC_LANG_PROGRAM([[