libosmogsm: Back-port SMS related fixes from openbsc
This was fixed in 9c3dc90d16a40789081c84e46620f4d66689fec1 of
openbsc.git, after the sms code had been migrated here:
introduce HAVE_TM_GMTOFF_IN_TM
Not all architectures have the tm.tm_gmtoff member. This fixes cygwin builds.
diff --git a/configure.ac b/configure.ac
index 3e88a1b..ca98fc2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -39,6 +39,31 @@
CFLAGS="$saved_CFLAGS"
AC_SUBST(SYMBOL_VISIBILITY)
+AC_DEFUN([CHECK_TM_INCLUDES_TM_GMTOFF], [
+ AC_CACHE_CHECK(
+ [whether struct tm has tm_gmtoff member],
+ osmo_cv_tm_includes_tm_gmtoff,
+ [AC_LINK_IFELSE([
+ AC_LANG_PROGRAM([
+ #include <time.h>
+ ], [
+ time_t t = time(NULL);
+ struct tm* lt = localtime(&t);
+ int off = lt->tm_gmtoff;
+ ])
+ ],
+ osmo_cv_tm_includes_tm_gmtoff=yes,
+ osmo_cv_tm_includes_tm_gmtoff=no
+ )]
+ )
+ if test "x$osmo_cv_tm_includes_tm_gmtoff" = xyes; then
+ AC_DEFINE(HAVE_TM_GMTOFF_IN_TM, 1,
+ [Define if struct tm has tm_gmtoff member.])
+ fi
+])
+
+CHECK_TM_INCLUDES_TM_GMTOFF
+
dnl Generate the output
AM_CONFIG_HEADER(config.h)