making unit test binaries using scons with g++ and gtest - c++

Question

I am not able sucessfully build the the project using scons, g++ and gtest. I want to use gtest as unit test. My project looks like below:
project
| -SConstruct
| -src
| -name.hh
| -name.cc
| -main.cc
| -gtest
| -/src/gtest_name.hh
| -/src/gtest_name.cc
| -/src/gtest_main.cc
Inside SConstruct for project building, I have following code:
program_srcs = ['name.cc']
cpppath = ['./src']
libpath = ['.', 'path_to_third_party_lib']
libs = ['thirdlib']
pro_env = Environment()
env.Append(CPPPATH = cpppath)
env.Append(LIBS = libs)
env.Append(LIBPATH = libpath)
env.Library('name', program_srcs)
libpath.append('name')
env.Append(LIBPATH = libpath)
env.Program(target = 'NAME', source = [ './src/main.cc']
test_src = ['./gtest/src/gtest_name.cc']
test_env = Environment()
test_env['LIBPATH'] = ['.']
test_env.Program("unit_test", test_src, LIBS=['name'])
Inside gtest_name.cc
include"name.hh"
TEST_F(TESTNAME, testmethod) {
Name name;
ASSERT_EQ(name.get_surname, "MIKE");
}
When I tried to compile and build, it gave following errors for gtest.
g++ -o gtest/src/gtest_name.o -c gtest/src/gtest_name.cc
gtest/src/gtest_name.cc:10:29: error: name.hh: No such file or directory
When I checked for library 'name', it was already constructed. Could you please tell me what the problem is?

Answer 1

You have added the required include search path "src" to the variable CPPPATH, for the environment "env".
But you build the library with the environment "test_env" which doesn't have CPPPATH defined.
That's why the "-I" directive is missing in your compiler call.
Note, that SCons offers a Clone() method for environments. It copies over all current definitions (and builders for example) from one environment to create a new one...this might come in handy here.