From ba866fef5af6af58d28ba1d356b15cd22fc575da Mon Sep 17 00:00:00 2001 From: Vladimir Prus Date: Thu, 4 Aug 2005 06:51:15 +0000 Subject: [PATCH] Switch to using os.environ, except of modules.peek. Document SHELL. [SVN r30453] --- v2/doc/src/faq.xml | 27 +++++---------------------- 1 file changed, 5 insertions(+), 22 deletions(-) diff --git a/v2/doc/src/faq.xml b/v2/doc/src/faq.xml index fdd02d40d..45f7ff250 100644 --- a/v2/doc/src/faq.xml +++ b/v2/doc/src/faq.xml @@ -99,8 +99,8 @@ exe a : a_obj ; namespace. Therefore, to access environment variable from Jamfile, you'd need the following code: -import modules ; -local SOME_LIBRARY_PATH = [ modules.peek : SOME_LIBRARY_PATH ] ; +import os ; +local SOME_LIBRARY_PATH = [ os.environ SOME_LIBRARY_PATH ] ; exe a : a.cpp : <include>$(SOME_LIBRARY_PATH) ; @@ -180,28 +180,11 @@ exe viewer : viewer png z ; Can I get output of external program as a variable in a Jamfile? - From time to time users ask how to run an external program and save - the result in Jamfile variable, something like: + The SHELL builtin can be used for the purpose: -local gtk_includes = [ RUN_COMMAND gtk-config ] ; +local gtk_includes = [ SHELL "gtk-config --cflags" ] ; - Unfortunately, this is not possible at the moment. However, if the - result of command invocation is to be used in a command to some tool, - and you're working on Unix, the following workaround is possible. - - alias gtk+-2.0 : : : : - <cflags>"`pkg-config --cflags gtk+-2.0`" - <inkflags>"`pkg-config --libs gtk+-2.0`" - ; - - If you use the "gtk+-2.0" target in sources, then the properties - specified above will be added to the build properties and eventually - will appear in the command line. Unix command line shell processes - the backticks quoting by running the tool and using its output -- - which is what's desired in that case. Thanks to Daniel James for - sharing this approach. -
@@ -342,7 +325,7 @@ exe hello : hello.cpp /site-config//zlib ;