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@@ -12,7 +12,7 @@ report the failure to the uclibc mailing list, with detailed error messages.
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2) uClibc is much more configurable then glibc. This means that a developer
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may have compiled uClibc in such a way that significant amounts of
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-functionality have been omitted.
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+functionality have been omitted.
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3) uClibc does not even attempt to ensure binary compatibility across releases.
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When a new version of uClibc is released, you may or may not need to recompile
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@@ -39,7 +39,7 @@ functionality from uClibc is not a great loss.
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support various methods of authentication and DNS resolution. uClibc only
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supports flat password files and shadow password files for storing
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authentication information. If you need something more complex than this,
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-you can compile and install pam.
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+you can compile and install pam.
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7) uClibc's libresolv is only a stub. Some, but not all of the functionality
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provided by glibc's libresolv is provided internal to uClibc. Other functions
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@@ -48,26 +48,30 @@ are not at all implemented.
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8) libnsl provides support for Network Information Service (NIS) which was
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originally called "Yellow Pages" or "YP", which is an extension of RPC invented
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by Sun to share Unix password files over the network. I personally think NIS
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-is an evil abomination and should be avoided. These days, using ldap is much
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+is an evil abomination and should not be used. These days, using ldap is much
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more effective mechanism for doing the same thing. uClibc provides a stub
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libnsl, but has no actual support for Network Information Service (NIS).
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We therefore, also do not provide any of the headers files provided by glibc
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-under /usr/include/rpcsvc. I am open to implementing ldap based password
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-authentication, but I do not personally intend to implement it (since I have no
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-use for it).
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+under /usr/include/rpcsvc.
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9) uClibc's locale support is not 100% complete yet. We are working on it.
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10) uClibc's math library only supports long double as inlines, and even
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-then the long double support is quite limited.
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+then the long double support is quite limited. Also, very few of the
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+float math functions are implemented. Stick with double and you should
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+be just fine.
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11) uClibc's libcrypt does not support the reentrant crypt_r, setkey_r and
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encrypt_r, since these are not required by SuSv3.
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-12) uClibc directly uses the kernel types to define most opaque data types.
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+12) uClibc directly uses kernel types to define most opaque data types.
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13) uClibc directly uses the linux kernel's arch specific 'stuct stat'.
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+14) uClibc's librt library currently lacks all aio routines, all clock
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+ routines, and all shm routines (only the timer routines and the mq
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+ routines are implemented).
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+
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<other things as we notice them>
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@@ -189,17 +193,17 @@ requires that you rebuild everything with profiling support. There is both a
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size and performance penalty to profiling your applications this way, as well
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as Heisenberg effects, where the act of measuring changes what is measured.
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-These exist a number of less invasive alternatives that do not require your to
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+There exist a number of less invasive alternatives that do not require you to
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specially instrument your application, and recompile and relink everything.
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+The OProfile system-wide profiler is an excellent alternative:
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+ http://oprofile.sourceforge.net/
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+
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Many people have had good results using the combination of Valgrind
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to generate profiling information and KCachegrind for analysis:
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http://developer.kde.org/~sewardj/
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http://kcachegrind.sourceforge.net/
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-The OProfile system-wide profiler is another alternative:
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- http://oprofile.sourceforge.net/
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-
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Prospect is another alternative based on OProfile:
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http://prospect.sourceforge.net/
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