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Undefined Reference Error In Gcc

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Anyone got a clue? I read a suggestion in another thread to modify config.status to include -lm, but it was not clear where to do that. Not the answer you're looking for? On my system, running the command on libm.a gives me output like the following. check over here

So -lexternal -Wl,--no-as-needed also wouldn't work. c gcc ld shared-libraries share|improve this question edited Jul 7 '12 at 12:11 octopusgrabbus 5,59772982 asked Nov 15 '11 at 17:26 Warren 81311120 1 Does gcc -L. -o program program.c I have installed gcc on a NSLU2. What am I doing wrong here?

Gcc Undefined Reference To Function

The full step that it fails on with error looks like this: gcc -g -O2 -fopenmp -L/usr/lib -lcfitsio -lm -o lenstool_tab e_nfwg.o lenstool_tab.o midpnt.o nrutil.o polint.o qromo.o read_bin.o lenstool_tab.o: In function Response to answers there is no .a library file, just .h and .c in the library, so -l isn't appropriate my understanding of a library file is that it is just Join them; it only takes a minute: Sign up GCC error : undefined reference up vote 0 down vote favorite I am trying to compile some C code on a beagleboard

vBulletin 2000 - 2016, Jelsoft Enterprises Ltd. test.c #include main() { printf("Linuxquestions.org\n"); } so it seems I did something correct. Why is this Sudoku Skyscraper Failing? Undefined Reference To Gcc Linker Error up vote 15 down vote favorite 7 Why am I getting an "undefined reference" error using gcc?

Try (I assume GCC): gcc -o myprog main.c json.c share|improve this answer edited Jun 27 '12 at 18:59 answered Jun 27 '12 at 18:51 user529758 Sorry, I think I Undefined Reference To In C You'll need/want to eliminate one (undoubtedly the one in point.c). Why do we need blockchains? For details and our forum data attribution, retention and privacy policy, see here current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your

What is the "Chairman Tree"? Undefined Reference To Error Dozens of earthworms came on my terrace and died there Hilbert-irreducible Banach space Given that ice is less dense than water, why doesn't it sit completely atop water (rather than slightly The definition is in the library itself. In your source file myapp.c you include the header, either directly or including another header that includes it.

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  • I'd guess GCC 4.2 era being approximately the cutover. –Flexo♦ Jun 11 at 8:11 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up
  • So to me everything looks OK!

Undefined Reference To In C

Why cast an A-lister for Groot? http://stackoverflow.com/questions/143530/linker-woes-undefined-reference Tic Tac Toe - C++14 Why were Navajo code talkers used during WW2? Gcc Undefined Reference To Function test.c needs libcrypto, so it must come before -lcrypto. Undefined Reference To G++ Not the answer you're looking for?

There might be other more complex cases but from your question, I hope this would be enough to solve your problem. check my blog TNG Season 5 Episode 15 - Is the O'Brien newborn child possessed, and is this event ever revisited/resolved/debunked? How do we play with irregular attendance? Why was Susan treated so unkindly? Undefined Reference C++

test.c #include main() { printf("Linuxquestions.org\n"); } so it seems I did something correct. Best way to repair rotted fuel line? My advisor refuses to write me a recommendation for my PhD application unless I apply to his lab Integer function which takes every value infinitely often more hot questions question feed this content Why is this Sudoku Skyscraper Failing?

For example: /* myapp.h ** Here I will include and define my stuff */ ... #include "mylib.h" ... Gcc Undefined Reference To Sqrt I suspect that it may be my compiler, maybe it is an over version? Get rid of the one in point.c –RageD Apr 5 '11 at 22:25 It is working now.

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up vote 4 down vote favorite 1 My compilation process throws around errors like ..undefined reference to `BN_cmp' although I include and run gcc -lssl -lcrypto test.c -o test can Let me share some info on the problem: I'm cross compiling with gcc for C. How to make Skyscanner, Kiwi, Kayak include ground transfer in the search How strange is it (as an undergrad) to email a professor from another institution about possibly working in their Gcc Undefined Reference To Static Library c gcc ubuntu compilation share|improve this question asked Jun 27 '12 at 18:49 Thomas K 3,44232551 add a comment| 1 Answer 1 active oldest votes up vote 6 down vote accepted

Browse other questions tagged c linker beagleboard math.h or ask your own question. The good point of this is that make automatically looks at the timestamps on the files, so it will only re-compile the files that have changed since the last time you Separate namespaces for functions and variables in POSIX shells Hilbert-irreducible Banach space "Full-time Employment is a Loophole in the Law to Make Wages Lower"? http://centralpedia.com/undefined-reference/undefined-reference-to-error-in-gcc.html So my thought is it might be the order in which I include the library files, but i'm not sure what is the correct way to order them.

I checked that these codes do contain #include. By convention the names of library files are prefixed with lib and (in their static form) have a .a extension. This is a separate file called testpoint.c: #include "point.h" #include #include int main() { double x = 1; double y = 1; Point p = create(x, y); assert(p.x == I use this command: gcc -L/media/sf_BitEagle_Projects/cbitcoin/build/bin -lcbitcoin \ -Wl-rpath,/media/sf_BitEagle_Projects/cbitcoin/build/bin -lssl -lcrypto \ -L/usr/local/ssl/lib/ -o /media/sf_BitEagle_Projects/cbitcoin/build/bin/testCBAddress \ /media/sf_BitEagle_Projects/cbitcoin/build/obj/testCBAddress.o \ /media/sf_BitEagle_Projects/cbitcoin/build/obj/CBOpenSSLCrypto.o The bin directory is the location of the library.

For instance, -lm will link the math library. Ask Ubuntu works best with JavaScript enabled current community chat Unix & Linux Unix & Linux Meta your communities Sign up or log in to customize your list. Separate namespaces for functions and variables in POSIX shells Why is the size of my email so much bigger than the size of its attached files? Browse other questions tagged gcc openssl or ask your own question.

Browse other questions tagged c++ c gcc linker undefined-reference or ask your own question. As the 2nd library is not loaded properly (B.so); This alone costed me a month of productivity time, as we were migrating to 64-bit, to finally trace down this question as If it appears before the object files, the linker will ignore the library (it doesn't provide any symbols that it needs when it scans the library), then it'll read the object