Add ax_zmq.m4 and ax_czmq.m4.

- ax_zmq.m4 tests for an appropiate zmq version
- ax_czmq.m4 tests for an appropiate czmq version

Closes https://github.com/peti/autoconf-archive/pull/54.

1 files changed, 86 insertions, 0 deletions

diff --git a/m4/ax_czmq.m4 b/m4/ax_czmq.m4
new file mode 100644
index 0000000..d913a2d
--- /dev/null
+++ b/m4/ax_czmq.m4
@@ -0,0 +1,86 @@
+# ===========================================================================
+#          http://www.gnu.org/software/autoconf-archive/ax_czmq.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CZMQ([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+#
+# DESCRIPTION
+#
+#   Test for the CZMQ libraries of a particular version (or newer). The
+#   default version tested for is 3.0.0.
+#
+#   The macro tests for CZMQ libraries in the library/include path, and,
+#   when provided, also in the path given by --with-czmq.
+#
+#   This macro calls:
+#
+#     AC_SUBST(CZMQ_CPPFLAGS) / AC_SUBST(CZMQ_LDFLAGS) / AC_SUBST(CZMQ_LIBS)
+#
+#   And sets:
+#
+#     HAVE_CZMQ
+#
+# 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 1
+
+AC_DEFUN([AX_CZMQ], [
+    AC_ARG_WITH([czmq], [AS_HELP_STRING([--with-czmq=<prefix>],[CZMQ prefix directory])], [
+        CZMQ_LDFLAGS="-L${with_czmq}/lib"
+        CZMQ_CPPFLAGS="-I${with_czmq}/include"
+    ])
+
+    HAVE_CZMQ=0
+    if test "$with_czmq" != "no"; then
+
+        LD_FLAGS="$LDFLAGS $CZMQ_LDFLAGS"
+        CPPFLAGS="$CPPFLAGS $CZMQ_CPPFLAGS"
+
+        AC_LANG_SAVE
+        AC_LANG_C
+        AC_CHECK_HEADER(czmq.h, [czmq_h=yes], [czmq_h=no])
+        AC_LANG_RESTORE
+
+        if test "$czmq_h" = "yes"; then
+            version=ifelse([$1], ,3.0.0,$1)
+            AC_MSG_CHECKING([for CZMQ version >= $version])
+            version=$(echo $version | tr '.' ',')
+            AC_EGREP_CPP([version_ok], [
+#include <czmq.h>
+#if defined(CZMQ_VERSION) && CZMQ_VERSION >= CZMQ_MAKE_VERSION($version)
+    version_ok
+#endif
+            ],[
+                AC_MSG_RESULT(yes)
+                HAVE_CZMQ=1
+                CZMQ_LIBS="-lczmq"
+                AC_SUBST(CZMQ_LDFLAGS)
+                AC_SUBST(CZMQ_CPPFLAGS)
+                AC_SUBST(CZMQ_LIBS)
+            ], AC_MSG_RESULT([no valid CZMQ version was found]))
+        else
+            AC_MSG_WARN([no valid CZMQ installation was found])
+        fi
+
+        if test $HAVE_CZMQ = 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 CZMQ])
+    fi
+
+    AC_DEFINE(HAVE_CZMQ,,[define if the CZMQ library is available])
+])