configure.ac: Ensure netinet/sctp.h is present
we unconditionally depend on this header file, yet nothing
in configure.ac ensures its presence. Building on a clean
Debian 10 with all existing dependencies installed passes
configure but fails at compilation time.
Change-Id: I0a4407ef6ee512ad5ea8775d90acfe1c4fa67cd0
diff --git a/configure.ac b/configure.ac
index 692db57..c186855 100644
--- a/configure.ac
+++ b/configure.ac
@@ -31,6 +31,8 @@
[AS_CASE(["${host_os}"],
[*linux*],[archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib'])])
+AC_CHECK_HEADERS(netinet/sctp.h,,AC_MSG_ERROR(netinet/sctp.h not found))
+
dnl check for pkg-config (explained in detail in libosmocore/configure.ac)
AC_PATH_PROG(PKG_CONFIG_INSTALLED, pkg-config, no)
if test "x$PKG_CONFIG_INSTALLED" = "xno"; then