# symbol

**Repository Path**: lizhanhui/symbol

## Basic Information

- **Project Name**: symbol
- **Description**: 展示C/C++中符号隐藏
展示cc_shared_library的用法
展示Bazel中version_script的用法
- **Primary Language**: C++
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-09-18
- **Last Updated**: 2022-09-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## Goal

    Goal of this project is to demonstrate that it is possible and actually easy to build exported library using Bazel. Aka, Bazel has required features to build a static linked shared library for other application developers, with symobl visibility properly managed.

## Directory Layout

 1. adder

    The `adder` directory (package in Bazel's term) contains internal implementation of the `calc` library.

 2. calc

    The `calc` directory contains the main library source files, which will build a shared library that is accessible to traditional users, aka, those who prefer `configure && make && make install`

    `calc` package hides all symbols from `adder` through version script. To verify,
     execute `nm -C libcalc.so | grep ' T '` after targets are built

 3. bin

    The bin directory contains an example program, that would consume the exported shared library.


## Reference
0. https://abseil.io/resources/swe-book/html/ch18.html
1. https://www.man7.org/conf/lca2006/shared_libraries/slide4b.html
2. https://github.com/bazelbuild/rules_cc/issues/83