Add some information about the requirements of a chroot environment.

[tinc] / configure.ac

diff --git a/configure.ac b/configure.ac
index 4c0f926..39abe9d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -3,8 +3,7 @@ dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.61)
 AC_INIT([tinc], m4_esyscmd_s((git describe || echo UNKNOWN) | sed 's/release-//'))
 AC_CONFIG_SRCDIR([src/tincd.c])
-AC_GNU_SOURCE
-AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall])
+AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall info-in-builddir])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 AM_SILENT_RULES([yes])
@@ -19,7 +18,6 @@ dnl Checks for programs.
 AC_PROG_CC_C99
 AC_PROG_CPP
 AC_PROG_INSTALL
-AC_PROG_LN_S
 
 AM_PROG_CC_C_O
 
@@ -140,6 +138,8 @@ AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
 dnl Compiler hardening flags
 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
 
+AX_CFLAGS_WARN_ALL(CFLAGS)
+
 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
 AS_IF([test "x$enable_hardening" != "xno"],
   [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
@@ -184,7 +184,7 @@ AC_CHECK_TYPES([struct ether_header, struct arphdr, struct ether_arp, struct ip,
 
 dnl Checks for library functions.
 AC_TYPE_SIGNAL
-AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
+AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
   [], [], [#include "$srcdir/src/have.h"]
 )