- Only build the specified libraries. `Asio` itself is header only so doesn’t have to be built.
- Only build static libraries (`link=static`)
- If you want to build release version libraries, set `variant=release`. The `debug` and `release` libraries have exactly the same name, so you cannot build them both at the same time.
- Don’t forget the `sudo` since the install prefix is `/usr/local`.
To clean the build, run `b2` with target "clean":
```
$ ./b2 clean
```
The libraries are installed to `/usr/local/lib`. E.g.,
```
$ ls -l /usr/local/lib/libboost*
-rw-r--r-- 1 adam admin 540288 Apr 21 11:01 /usr/local/lib/libboost_date_time.a
...
```
The headers are installed to `/usr/local/include/boost`.
### Googletest
```
$ sudo apt install libgtest-dev
```
### Webcc
Create a build folder under the webcc root (or any other) directory, and `cd` to it:
```
$ mkdir build
$ cd build
```
Generate Makefiles with the following command:
```
$ cmake -G"Unix Makefiles" \
-DBUILD_AUTOTEST=OFF \
-DBUILD_UNITTEST=OFF \
-DBUILD_EXAMPLES=ON \
-DBUILD_QT_EXAMPLES=OFF \
-DWEBCC_ENABLE_LOG=1 \
-DWEBCC_LOG_LEVEL=0 \
-DWEBCC_ENABLE_SSL=1 \
-DWEBCC_ENABLE_GZIP=1 \
..
```
_NOTE: You can create a script (e.g., `gen.sh`) with the above command to avoid typing again and again whenever you want to change an option._
Feel free to change the build options according to your need.
If everything is OK, you can then build with `make`:
*NOTE: Given `address-model=64``b2.exe` will not build any x86 libraries.*
As you can see, we only need to build `system`, `date_time` and `filesystem`. Asio itself is a header-only library.
We don't install Boost to any other place (e.g., `C:\Boost`). We just `stage` it where it is.
In order for CMake to find Boost, please add an environment variable named `Boost_ROOT` pointing to the root directory of Boost.
### OpenSSL
Download from [here](http://slproweb.com/products/Win32OpenSSL.html).
The following installers (the suffix "g" might change according to revision) are recommended for development:
- Win64 OpenSSL v1.1.1g
- Win32 OpenSSL v1.1.1g
During the installation, you will be asked to copy OpenSSL DLLs (`libcrypto-1_1-x64.dll` and `libssl-1_1-x64.dll`) to "The Windows system directory" or "The OpenSSL libraries (/bin) directory". If you choose the later, remember to add the path (e.g., `C:\Program Files\OpenSSL-Win64\bin`) to the `PATH` environment variable.
OpenSSL can also be statically linked (see `C:\Program Files\OpenSSL-Win64\lib\VC\static`), but it's not recommended. Because the static libraries might not match the version of your VS.
The only drawback of dynamic link is that you must distribute the OpenSSL DLLs together with your program.
### Zlib
Download Zlib from https://www.zlib.net/.
Use CMake to generate VS solution. Click _**Configure**_ button.
By default, `CMAKE_INSTALL_PREFIX` points to a folder like `C:/Program Files (x86)/zlib` which is not what we want.
Change `CMAKE_INSTALL_PREFIX` to a folder where you would like to install all the third party libraries. E.g., `D:/lib/cmake_install_2019_64` (NOTE: you must use "/" instead of "\\" as path seperator!).
Remove all the `INSTALL_XXX_DIR` entries. Click _**Configure**_ button again. Now the `INSTALL_XXX_DIR` entries point to the folder defined by `CMAKE_INSTALL_PREFIX`.
Leave all other options untouched, click _**Generate**_ button to generate the VS solution.
Launch the VS solution and build `INSTALL` project for both Debug and Release.
Zlib should now have been installed to the given folder.
In order for CMake to find Zlib during the configuration of Webcc, please add an environment variable named `CMAKE_PREFIX_PATH` which points to the CMake install directory.
### Googletest
Download the latest release of [Googletest](https://github.com/google/googletest/releases).
The `CMAKE_INSTALL_PREFIX` has been changed to `D:/lib/cmake_install_2019_64` (NOTE: please use "/" instead of "\\" as path seperators!). This path should be added to an environment variable named `CMAKE_PREFIX_PATH`. Then, CMake can find this installed Googletest during the configuration of Webcc.
Open CMake, set **Where is the source code** to Webcc root directory (e.g., `D:/github/webcc`), set **Where to build the binaries** to any directory (e.g., `D:/github/webcc/build_2019_64`).
In the center of CMake, you can see a lot of configure options which are grouped. Change them according to your need. E.g., set `WEBCC_ENABLE_SSL` to `1` to enable OpenSSL.
