packtpublishing / advanced-cpp-programming-cookbook

Advanced C++ Programming CookBook, published by Packt

Advanced-C-CookBook.

Advanced C++ CookBook, published by Packt

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advanced-cpp-programming-cookbook's Issues

Chapter05 Recipe04 testing thread-safe in main function

In main function, the "s.push(4)..." would make more sense if it is replaced by "std::thread t1( [&]{ s.push(4) };); t1.join()", all the way to "std::thread t6( [&]{ s.push(42) };); t6.join()", since we might use multi-threaded execution to test if a class is thread-safe.

Chapter06 recipe01_example01 hayai does not install properly on my ubuntu 20.04 focal fossa

Hello, so I follow the instructions on the book, p.182 but it turns out, on my machine running ubuntu 20.04 at least, that make cannot create the executable for recipe01_example01:

/home/.../Chapter06/recipe01.cpp:27:10: fatal error: hayai.hpp: No such file or directory 27
      | #include <hayai.hpp>
      |          ^~~~~~~~~~~
compilation terminated.

Seen that, I tried to download hayai from the author's repository, but with no success as the ppa itself is outdated:

  404  Not Found [IP: 185.125.190.52 80]
...
Reading package lists... Done`
                                              
E: The repository 'http://ppa.launchpad.net/bruun/hayai/ubuntu focal Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

As last resort, I then tried to copy the hayai.hpp file and its other header dependencies from the github repo directly into my chapter06 folder...to no avail, as compilation yields many errors, probably due to the fact that the .hpp files on github are tailored on a token example.

cmake gives errors: No download info given for 'chapter13' and its source directory

I tried to build examples as per instruction:

> mkdir build && cd build
> cmake ..
> make recipe01_examples

But got above errors.

In the repository the directories starts with capital letter: Chapter01, ... while in CMakeLists.txt it was used with small letter:

add_chapter(chapter01)
...

Then I tried to change all entries in CMakeLists.txt:

add_chapter(Chapter01)
...

then command

cmake ..

works ok, but make is not working:

 make recipe01_examples

Chapter07: new version 3 of the Catch2 library breaks recipe01 tests

As things stand right now cloning Catch2 git repo fails.
Version 3 of Catch2 can be downloaded by modifying the CMakeLists.txt of Chapter07 at lines 46-61 as follows:

add_custom_target(recipe01_examples)

list(APPEND CATCH_CMAKE_ARGS
    -DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR}/external/
)

ExternalProject_Add(
    catch
    GIT_REPOSITORY https://github.com/catchorg/Catch2.git
    GIT_TAG origin/devel
    GIT_SHALLOW 1
    CMAKE_ARGS ${CATCH_CMAKE_ARGS}
    UPDATE_COMMAND cmake -E echo "-- Skipping update"
)

include_directories(${CMAKE_BINARY_DIR}/external/include)

recipe01.cpp has then to be modified so to accommodate the new multi-header approach of Catch2 v3, with its multiple updates of function names and namespaces.

A far better approach to solve this would consist in downloading Catch2 v2 from here, to place it in the ./Chapter07/build folder, and to modify #include <catch.hpp> to #include "catch.hpp" everywhere inside recipe01.cpp.