Hello, I'm using boost BJam to build my project with externals librairies. And I need to define variables if I found headers on the machine. How can we do that ? project : requirements <include>. <define>FLAG_NEEDED_TO_DEFINE => I need to define only if I found header. ; lib library : [ glob *.cpp ] ; Thanks, Marc-Antoine* *ARNAUD
AMDG On 03/16/2012 06:58 AM, Marc-Antoine ARNAUD wrote:
I'm using boost BJam to build my project with externals librairies. And I need to define variables if I found headers on the machine.
How can we do that ?
project : requirements <include>. <define>FLAG_NEEDED_TO_DEFINE => I need to define only if I found header. ;
lib library : [ glob *.cpp ] ;
At the moment the easiest way to do this is:
// header.cpp
#include
Okay with your help, I change a little...
I write a rule ti check if an header is present, and if it's present I
return the first flag
rule evaluate-header-is-available ( properties * : header-file * )
{
if [ path.exists $(header-file) ]
{
echo $(header-file) "= found" ;
return $(properties) ;
}
else
{
echo $(header-file) "= not found" ;
}
}
and after in my project I use the rule:
[ evaluate-header-is-available <define>FLAG_NEEDED_TO_DEFINE :
/usr/include/unistd.h ]
With that I add flag only when rhe header /usr/include/unistd.h is present
;)
2012/3/16 Steven Watanabe
AMDG
On 03/16/2012 06:58 AM, Marc-Antoine ARNAUD wrote:
I'm using boost BJam to build my project with externals librairies. And I need to define variables if I found headers on the machine.
How can we do that ?
project : requirements <include>. <define>FLAG_NEEDED_TO_DEFINE => I need to define only if I found header. ;
lib library : [ glob *.cpp ] ;
At the moment the easiest way to do this is:
// header.cpp #include
# Jamfile
import configure ;
obj header_test : header.cpp ;
project : requirements [ configure.check-target-builds header_test "header.h exists" : <define>FLAG_NEEDED_TO_DEFINE ] ;
In Christ, Steven Watanabe _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
-- Marc-Antoine* *ARNAUD Software Engineer Mikros Image - Digital Post-Production for Video and Film www.mikrosimage.eu
participants (2)
-
Marc-Antoine ARNAUD -
Steven Watanabe