CODEWITHSUNDEEP
c++linuxscons
syvex
syvex

Reputation: 7756

SCons: How to make a library pick up CPPPATH options

I have boost installed under /home/username/local/include. I want to compile a library with this set under CPPPATH.

SConstruct:

env = Environment(CPPPATH = '/home/username/local/include')
env.Library('MyLib', 'library.cpp')

library.cpp:

#include <boost/shared_ptr.hpp> // library.cpp:1:32: error: boost/shared_ptr.hpp: No such file or directory

void foo() { }

However, when I run scons, it gives the error error: boost/shared_ptr.hpp: No such file or directory.

Doing the same thing for a program works just fine.

SConstruct:

env = Environment(CPPPATH = '/home/username/local/include')
env.Program('program.cpp')

program.cpp:

#include <boost/shared_ptr.hpp> // works

int main() { return 0; }

What am I missing here?

EDIT

Here is the output:

scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
g++ -o library.o -c -I/home/m/local/include library.cpp
library.cpp:1:32: error: boost/shared_ptr.hpp: No such file or directory
scons: *** [library.o] Error 1
scons: building terminated because of errors.

Upvotes: 0

Views: 1708

Answers (1)

acm
acm

Reputation: 12727

I can't reproduce your error on my system. Everything you have there looks right to me.

I created a faked out boost include setup, and used a different filename so it wouldn't accidentally reach into my real boost includes in /usr. I'm using SCons 2.0.1.

$ find /home/acm/local/include -type f
/home/acm/local/include/boost/not_a_boost_header.hpp

library.cpp:

#include <boost/not_a_boost_header.hpp> 

void foo() { }

program.cpp:

#include <boost/not_a_boost_header.hpp> 

int main() { return 0; }

SConstruct:

env1 = Environment(CPPPATH = '/home/acm/local/include')
env1.Library('MyLib', 'library.cpp')

env2 = Environment(CPPPATH = '/home/acm/local/include')
env2.Program('program.cpp')

Build results:

$ scons
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
g++ -o library.o -c -I/home/acm/local/include library.cpp
ar rc libMyLib.a library.o
ranlib libMyLib.a
g++ -o program.o -c -I/home/acm/local/include program.cpp
g++ -o program program.o
scons: done building targets.

Can you post the complete SCons output?

Upvotes: 1

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