Difference "CppCMS For embedded systems" ver. 3 versus ver. 4
Content:
**Note:** _Available starting from CppCMS 0.0.4_ |
**Note:** _Scheduled for CppCMS 0.0.4_ |
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## General |
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Generally CppCMS can be used as-is for embedded systems. However there are additional options that make this library optimized for embedded system: |
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- Removal of intermediate buffers, caching and compression -- reduces memory footprint and removes dependency on `boost::iostreams`, zlib and bzip2 libraries. |
- Removed mod-prefork |
- Optional compilation in CGI mode -- removal of FastCGI and SCGI API and worker models. |
- Removed dynamic templates loading. |
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This compilation allows building CppCMS using only following libraries: |
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- libcgicc |
- libboost\_signals |
- libboost\_regex. |
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## Compilation |
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Build Flags: |
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- `--enable-embedded` -- Create embedded version of cppcms. |
- `--enable-cgi` -- implement CGI API only. |
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For example: |
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./configure --host=arm-linux-gnu --prefix=/usr/arm-linux-gnu CXXFLAGS=-Os --enable-embedded --enable-cgi |
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Would configure cross compilation make files for ARM platfor, |
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_Notes:_ |
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- Remember that you should build cgicc and boost as well |
- It is recommended to build `boost::regex` without ICU support in order to reduce executable size. |
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## Static Linking |
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You can link your application statically as following: |
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### CGI Only |
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You can build "almost" static build as following: |
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g++ hello.o /path/to/libcppcms.a /path/to/libcppcmstranstext.a /path/to/libboost_signals.a /path/to/libboost_regex.a /path/to/libcgicc.a |
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### With worker threads |
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You can build "almost" static build as following: |
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g++ hello.o /path/to/libcppcms.a /path/to/libcppcmstranstext.a /path/to/libboost_signals.a /path/to/libboost_regex.a /path/to/libcgicc.a -lrt -lpthread |
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