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-rw-r--r--m4/ax_zmq.m486
1 files changed, 86 insertions, 0 deletions
diff --git a/m4/ax_zmq.m4 b/m4/ax_zmq.m4
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+# ===========================================================================
+# https://www.gnu.org/software/autoconf-archive/ax_zmq.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_ZMQ([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+#
+# DESCRIPTION
+#
+# Test for the ZMQ libraries of a particular version (or newer). The
+# default version tested for is 4.0.0.
+#
+# The macro tests for ZMQ libraries in the library/include path, and, when
+# provided, also in the path given by --with-zmq.
+#
+# This macro calls:
+#
+# AC_SUBST(ZMQ_CPPFLAGS) / AC_SUBST(ZMQ_LDFLAGS) / AC_SUBST(ZMQ_LIBS)
+#
+# And sets:
+#
+# HAVE_ZMQ
+#
+# LICENSE
+#
+# Copyright (c) 2016 Jeroen Meijer <jjgmeijer@gmail.com>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 2
+
+AC_DEFUN([AX_ZMQ], [
+ AC_ARG_WITH([zmq], [AS_HELP_STRING([--with-zmq=<prefix>],[ZMQ prefix directory])], [
+ ZMQ_LDFLAGS="-L${with_zmq}/lib"
+ ZMQ_CPPFLAGS="-I${with_zmq}/include"
+ ])
+
+ HAVE_ZMQ=0
+ if test "$with_zmq" != "no"; then
+
+ LD_FLAGS="$LDFLAGS $ZMQ_LDFLAGS"
+ CPPFLAGS="$CPPFLAGS $ZMQ_CPPFLAGS"
+
+ AC_LANG_SAVE
+ AC_LANG_C
+ AC_CHECK_HEADER(zmq.h, [zmq_h=yes], [zmq_h=no])
+ AC_LANG_RESTORE
+
+ if test "$zmq_h" = "yes"; then
+ version=ifelse([$1], ,4.0.0,$1)
+ AC_MSG_CHECKING([for ZMQ version >= $version])
+ version=$(echo $version | tr '.' ',')
+ AC_EGREP_CPP([version_ok], [
+#include <zmq.h>
+#if defined(ZMQ_VERSION) && ZMQ_VERSION >= ZMQ_MAKE_VERSION($version)
+ version_ok
+#endif
+ ],[
+ AC_MSG_RESULT(yes)
+ HAVE_ZMQ=1
+ ZMQ_LIBS="-lzmq"
+ AC_SUBST(ZMQ_LDFLAGS)
+ AC_SUBST(ZMQ_CPPFLAGS)
+ AC_SUBST(ZMQ_LIBS)
+ ], AC_MSG_RESULT([no valid ZMQ version was found]))
+ else
+ AC_MSG_WARN([no valid ZMQ installation was found])
+ fi
+
+ if test $HAVE_ZMQ = 1; then
+ # execute ACTION-IF-FOUND (if present):
+ ifelse([$2], , :, [$2])
+ else
+ # execute ACTION-IF-NOT-FOUND (if present):
+ ifelse([$3], , :, [$3])
+ fi
+ else
+ AC_MSG_NOTICE([not checking for ZMQ])
+ fi
+
+ AC_DEFINE(HAVE_ZMQ,,[define if the ZMQ library is available])
+])