Fix compiler warnings.

[tinc] / configure.ac

diff --git a/configure.ac b/configure.ac
index ad5ba62..ca12640 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,9 +1,10 @@
 dnl Process this file with autoconf to produce a configure script.
 
+origcflags="$CFLAGS"
+
 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])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
@@ -19,10 +20,12 @@ dnl Checks for programs.
 AC_PROG_CC_C99
 AC_PROG_CPP
 AC_PROG_INSTALL
-AC_PROG_LN_S
-
 AM_PROG_CC_C_O
 
+dnl Check whether to enable code coverage testing, and if so, clear the default CFLAGS.
+AX_CODE_COVERAGE
+AS_IF([test "x$enable_code_coverage" = "xyes" -a "x$origcflags" = "x"], [CFLAGS=""])
+
 dnl Check and set OS
 
 AC_CANONICAL_HOST
@@ -117,7 +120,7 @@ AC_ARG_WITH(systemd,
   [ systemd=false ]
 )
 
-AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="/lib/systemd/system"],
+AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
       [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
 
 AC_SUBST(systemd_path, $systemd_path)
@@ -140,6 +143,8 @@ AS_IF([test -d /sw/lib], [LIBS="$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 +189,7 @@ 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"]
 )
 
@@ -203,7 +208,7 @@ case $host_os in
       [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
     )
   ;;
-  *bsd*|*darwin*)
+  *bsd*|*dragonfly*|*darwin*)
     AC_CHECK_HEADERS([net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h],
       [], [], [#include "$srcdir/src/have.h"]
     )
@@ -255,6 +260,11 @@ AC_ARG_ENABLE(jumbograms,
   ]
 )
 
-AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile gui/Makefile test/Makefile systemd/Makefile])
+dnl Ensure runstatedir is set if we are using a version of autoconf that does not suppport it
+if test "x$runstatedir" = "x"; then
+  AC_SUBST([runstatedir], ['${localstatedir}/run'])
+fi
+
+AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile systemd/Makefile])
 
 AC_OUTPUT