30 lines
1.5 KiB
Markdown
30 lines
1.5 KiB
Markdown
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# NSPR emulation library
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Author: Max Bolingbroke (<batterseapower@hotmail.com>)
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This library was created by pulling together the minimal pieces of NSPR required to get the Universal Character Set
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Detector (UCSD) to compile. It turns out that the UCSD uses only very minimal parts of NSPR, so we can get away with just a few
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header files and totally forget about linking to the library.
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Precisely, we used these files from [NSPR v4.8.6](https://ftp.mozilla.org/pub/mozilla.org/nspr/releases/v4.8.6/):
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* prtypes.h
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* prmem.h
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* obsolete/protypes.h
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I then patched some prototypes in prmem.h to use C library functions directly. The protypes were replaced with #define directives
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that ensure that callers of PR_Malloc, PR_Calloc, PR_Realloc, PR_Free just use their C library counterparts directly.
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To finish off, I needed to provide prcpucfg.h. Normally this is generated by the nspr build process, but to simplify things I used
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the version from [Google's Chrome source tree](http://src.chromium.org/viewvc/chrome/trunk/src/base/third_party/nspr/prcpucfg.h?view=markup)
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that just uses the preprocessor to choose between several pre-generated versions.
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I had to patch the Google-provided prcpucfg.h so that the #included paths pointed to the right directory.
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## Licensing
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Chromium (and thus presumably their contribution) is licensed under the BSD license.
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NSPR is licensed under the MPL/GPL/LGPL tri-license.
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Thus, this emulation library is licensed under the LGPL (I think).
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