Re: [boost] [predef] Boost build errors using predef-check

On 5/4/2015 1:04 PM, Rene Rivera wrote:

On Mon, May 4, 2015 at 11:57 AM, Edward Diener wrote:

...

On 5/4/2015 11:23 AM, Steven Watanabe wrote:

...

AMDG

On 05/03/2015 10:42 PM, Edward Diener wrote:

...

In my jam file I have:

import ../../predef/check/predef : check require : predef-check predef-require ;

and in the requirments section of various Boost Build built-in rules I have:

[ predef-check "BOOST_COMP_GNUC >= 4.3" : <cxxflags>-std=c++0x ]

When I try to process my jamfile I get numerous warnings along the line of:

...

C:/Programming/VersionControl/modular-boost/libs/vmd/test\../../predef/check/pre

def.jam:61: in predef-check warning: object is empty <snip>

Any ideas of what is wrong ?

The signature of predef.check is

rule check ( expressions + : language ? : true-properties * : false-properties * )

You're skipping the 'language' argument. If you leave it blank it defaults to cpp.

The error is on the line: local exe_target = [ $(_check_exe_($(language))).name ] ;

You are correct.

I now tried, for a 'run' rule within an 'alias':

[ run test_after_array_elem.cpp : : : [ predef-check "BOOST_COMP_GNUC" >= 4.3 : : <cxxflags>-std=c++0x ] ]

Only to receive:

Jamfile.v2:52: syntax error at keyword ]

=== [ run test_after_array_elem.cpp : : : [ predef-check "BOOST_COMP_GNUC >= 4.3" : : <cxxflags>-std=c++0x ] ]

The predef condition needs to be quoted as a single arg.

Thanks ! Can I offer senility as an excurse <g> ?