Only set -fno-strict-overflow if -fwrapv is not available.

[meshlink] / configure.ac

diff --git a/configure.ac b/configure.ac
index d2d7c8c7088441096c08d32e58c2f36728d6c787..b4672e0c91895ba85e7c1c645f8906f3560103b3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -23,6 +23,7 @@ AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_LIBTOOL
+AX_PTHREAD
 
 dnl Check and set OS
 
@@ -58,8 +59,9 @@ dnl No -fstack-protector-all because it doesn't work on all platforms or archite
 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 -DFORITFY_SOURCE=2"])
-   AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
-   AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"])
+   AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
+     [AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])]
+   )
    case $host_os in
      *mingw*)
        AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
@@ -95,35 +97,24 @@ AM_CONDITIONAL(INSTALL_TESTS, test "$install_tests" = true)
 dnl Checks for header files.
 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
 
-AC_HEADER_STDC
-AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h])
-AC_CHECK_HEADERS([time.h],
-  [], [], [#include "src/have.h"]
-)
+AC_CHECK_HEADERS([syslog.h sys/file.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h])
 
 dnl Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_C_VOLATILE
-AC_TYPE_PID_T
-AC_TYPE_SIZE_T
-AC_HEADER_TIME
-AC_STRUCT_TM
-
 MeshLink_ATTRIBUTE(__malloc__)
 MeshLink_ATTRIBUTE(__warn_unused_result__)
 
 AC_CHECK_TYPES([socklen_t, struct addrinfo, struct sockaddr_in6], , ,
-  [#include "src/have.h"]
+  [#include "$srcdir/src/have.h"]
 )
 
 AC_CHECK_TYPES([struct sockaddr_storage], ,AC_MSG_ERROR([System must support struct sockaddr_storage.]),
-  [#include "src/have.h"]
+  [#include "$srcdir/src/have.h"]
 )
 
 dnl Checks for library functions.
 AC_TYPE_SIGNAL
-AC_CHECK_FUNCS([asprintf fchmod fork get_current_dir_name gettimeofday random select strdup strerror time usleep],
-  [], [], [#include "src/have.h"]
+AC_CHECK_FUNCS([asprintf fchmod fork gettimeofday random select strdup usleep],
+  [], [], [#include "$srcdir/src/have.h"]
 )
 
 dnl Support for SunOS
@@ -136,11 +127,11 @@ AC_CHECK_FUNC(gethostbyname, [], [
 ])
 
 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
-  [], [], [#include "src/have.h"]
+  [], [], [#include "$srcdir/src/have.h"]
 )
 
 AC_CACHE_SAVE
 
-AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile m4/Makefile test/Makefile examples/Makefile])
+AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile examples/Makefile])
 
 AC_OUTPUT