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Sets pre-processor and linker search paths for the open62541 library [1].

The open62541 library is a cmake-based project, that is not always installed to the system: it does not even provide an install target by default. In that case, the location of several directories need to be added to the pre-processor and linker search paths:

  * -I<src>/deps
  * -I<src>/include
  * -I<src>/plugins
  * -I<build>/src_generated
  * -I<build>
  * -L<build>

Here "src" indicates the location of the library source directory and "build" the location of the out-of-source build.

This macro provides the configure options –with-open62541=dir and –with-open62541-build=dir to set the two directories. This macro will append to CPPFLAGS and LDFLAGS if a dir is supplied. It will also export LD_LIBRARY_PATH with the absolute path of the build dir for the rest of the configure script to use and define a Makefile variable OPEN62541_LDPATH, which contains LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<abs_path_to_build> : this is intended to be used for all commands that need to execute a program using the library (e.g. make check). If paths are set, they are forwarded to distcheck.

For –with-open62541, the dir is optional: if either the values "no" (from –without-open62541) or "yes" (for no argument) are specified, this macro does nothing but these values may be used by other code. If –with-open62541 is not specified, the variable with_open62541 is not set.

For –with-open62541-build, the dir is compulsory. –with-open62541-build must not be given without also specifying –with-open62541. If –with-open62541 is given but –with-open62541-build is not, the default value is "<src>/build".

[1]: <>

Source Code

Download the latest version of ax_open62541_path.m4 or browse the macro’s revision history.


Copyright © 2016,2017 Olaf Mandel

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.

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