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#!/usr/bin/env python3 |
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"""Patch Motif lib/Xm/Xmfuncs.h for Solaris/GCC. |
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|
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Root cause: Xmfuncs.h defines bcopy/bzero/bcmp/memmove as function-like macros. |
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On Solaris, X11/Xos.h later includes <strings.h> which has declarations like |
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extern void bcopy(const void *, void *, size_t); |
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The preprocessor expands the 'bcopy' macro AT THE DECLARATION SITE, turning it |
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into garbage syntax that GCC rejects as a parse error. |
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|
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Fix: when __sun is defined, just include <string.h> + <strings.h> (which provide |
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proper prototypes) and skip all macro definitions entirely. |
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""" |
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import sys, re |
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|
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path = sys.argv[1] |
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with open(path) as f: |
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content = f.read() |
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|
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# Find the region between #define _XFUNCS_H_ and #endif /* _XFUNCS_H_ */ |
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# We want to insert a Solaris shortcut right after the guard define. |
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guard_define = '#define _XFUNCS_H_\n' |
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guard_endif = '\n#endif /* _XFUNCS_H_ */' |
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|
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idx_define = content.find(guard_define) |
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idx_endif = content.rfind(guard_endif) |
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|
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if idx_define == -1 or idx_endif == -1: |
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print("ERROR: could not locate include guard in Xmfuncs.h") |
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sys.exit(1) |
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|
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body_start = idx_define + len(guard_define) |
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body = content[body_start:idx_endif] |
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|
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solaris_shortcut = ( |
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'\n' |
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'/* Solaris/GCC fix: bcopy/bzero/bcmp/memmove are real functions in\n' |
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' * <strings.h>. Defining them as macros here causes the preprocessor\n' |
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' * to expand them inside extern declarations from <strings.h>, producing\n' |
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' * invalid syntax. Just include the system headers and skip all macros. */\n' |
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'#ifdef __sun\n' |
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'# include <string.h>\n' |
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'# include <strings.h>\n' |
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'# define _XFUNCS_H_INCLUDED_STRING_H\n' |
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'#else /* !__sun */\n' |
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+ body + |
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'#endif /* !__sun */\n' |
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) |
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|
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new_content = content[:body_start] + solaris_shortcut + content[idx_endif:] |
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|
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with open(path, 'w') as f: |
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f.write(new_content) |
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print("Xmfuncs.h patched OK") |
