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warning: incompatible implicit declaration of built-in function ‘xyz’

... In the case of some programs, these errors are normal and should not be fixed. I get these error messages when compiling the program phrap (for example). This program happens to contain code that modifies or replaces some built in functions, and when I includ...
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What is the difference between supervised learning and unsupervised learning? [closed]

...oblems. Learning through training in a supervised ANN model also called as error backpropagation algorithm. The error correction-learning algorithm trains the network based on the input-output samples and finds error signal, which is the difference of the output calculated and the desired output and...
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Python Image Library fails with message “decoder JPEG not available” - PIL

...L pip install PIL --upgrade This resolved the decoder JPEG not available error for me. UPDATE (4/24/14): Newer versions of pip require additional flags to download libraries (including PIL) from external sources. Try the following: pip install PIL --allow-external PIL --allow-unverified PIL S...
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How to check if a symlink exists

...ou can do all these tests and get an exit status whose value indicates the error condition. if [ ! \( -e "${file}" \) ] then echo "%ERROR: file ${file} does not exist!" >&2 exit 1 elif [ ! \( -f "${file}" \) ] then echo "%ERROR: ${file} is not a file!" >&2 exit 2 e...
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How can I convert bigint (UNIX timestamp) to datetime in SQL Server?

... +1 for the creative solution! Works great. FYI, there is a syntax error in the SQL. The semi-colon at the end of the first "DECLARE" line needs to be removed since a comma follows. – Seth Sep 17 '14 at 14:12 ...
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How do I fix certificate errors when running wget on an HTTPS URL in Cygwin?

...r example, running wget https://www.dropbox.com results in the following errors: 9 Answers ...
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Git submodule head 'reference is not a tree' error

... This error can mean that a commit is missing in the submodule. That is, the repository (A) has a submodule (B). A wants to load B so that it is pointing to a certain commit (in B). If that commit is somehow missing, you'll get ...
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What does “The APR based Apache Tomcat Native library was not found” mean?

... +1 I was getting this error (posted by OP) only under Eclipse, eventhough it was fixed when i run it standalone (of course, after adding the native lib.) Thanks for the tip on setting the system property! – asgs ...
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IISExpress returns a 503 error from remote machines

... Firewall was open, I could connect to the port, but I still got the "503" error. I tested a few things locally, and discovered that only http://localhost worked. Using the real IP address (not 127.0.0.1, but, for instance, 192.168.1.50), still returned a 503 even on the local machine. I tried usi...
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C++ error: undefined reference to 'clock_gettime' and 'clock_settime'

...cc version 4.6.1, -lrt must be after filefork.cpp otherwise you get a link error. Some older gcc version doesn't care about the position. share | improve this answer | fol...