I am trying to compile C code that uses check.h with this command on Windows 11:
gcc new_test.c s21_decimal.a -lcheck -lm -lpthread -lsubunit -o new_test
But then i get this error:
/usr/lib/gcc/x86_64-pc-msys/11.3.0/../../../../x86_64-pc-msys/bin/ld: cannot find -lcheck: No such file or directory
/usr/lib/gcc/x86_64-pc-msys/11.3.0/../../../../x86_64-pc-msys/bin/ld: cannot find -lsubunit: No such file or directory
collect2: error: ld returned 1 exit status
So, GCC cannot find check and subunit, but it sure finds check.h header and all the other headers.
What is the most common way to fix this?
Can I download check and subunit (are those .lib?) manually and give these to GCC? If I can - how do I do this?
GCC version: gcc (GCC) 11.3.0
Related
I'm trying to run a simple code that includes the fftw library. I know the code is right as it is provided as a test code by the authors. This is what I typed during compilation:
gcc my file.c -L/home/ankit/Desktop/fftw-3.3.6-pl2/lib/
-I/home/ankit/Desktop/fftw-3.3.6-pl2/include/ -lfftw -lm
I get the errors:
myfile.c: (.Text+0x2c):. undefined reference to 'fftw_plan_dft_2d'
collect2: ld returned 1 exit status
It wasn't a linking problem, installation was faulty and I had to use 'sudo make install' to get the permission for the installation to be successful. I could link it with 'gcc test.c -lfftw3 -lm' after. Thanks for your suggestions!
My program uses the GNU Multiple Precision Arithmetic Library to deal with numbers of an arbitrary size. I successfully compile it using GCC with:
gcc main.c -o diff -g -lgmp
However, when I try to use the MinGW crosscompiler compiler, I get the following error:
i686-w64-mingw32-gcc main.c -o diff.exe -g -lgmp
main.c:3:46: fatal error: gmp.h: No such file or directory
#include <gmp.h>//For files of arbitrary size
I then tried to tell it exactly where the header file was:
i686-w64-mingw32-gcc main.c -o diff.exe -I/usr/include -g -lgmp
/usr/lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld: cannot find -lgmp
collect2: error: ld returned 1 exit status
Ok, so I figure now it successfully found the header, but cant find the library. So I tried again:
i686-w64-mingw32-gcc main.c -o diff.exe -I/usr/include -g -L/usr/lib -lgmp
/usr/lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld: cannot find -lgmp
collect2: error: ld returned 1 exit status
I guess I need to specify the exact files to use, so I tried this:
i686-w64-mingw32-gcc main.c -o diff.exe -I/usr/include -g /usr/lib/libgmp.so
/usr/lib/libgmp.so: file not recognized: File format not recognized
collect2: error: ld returned 1 exit status
So, I honestly don't know what to do and I'd really really appreciate your help.
First, a disclaimer: the cross-compiler you are using is neither distributed by, nor supported by MinGW.org, whom I represent; if you are looking for a pre-compiled solution, you should seek it from the distributor of the specific cross-compiler itself.
That said, I can offer the following insight, (which will apply, in general, to any cross-compiler): the headers you find in /usr/include, or in /usr/local/include, and the libgmp.so which you find in /usr/lib, or in /usr/local/lib, are intended for use with your native platform compiler. They are not suitable for, and cannot be used with your MinGW cross-compiler; attempting to do so will surely never work. Thus, you have two options:
Ask your cross-compiler distributor to provide a pre-compiled copy of gmp.dll, (or at the very least, a compatible import library, although you may need the gmp.dll to distribute with your own application anyway), and any associated header files, and/or equivalent statically linkable library, for use with your cross-compiler.
Use your cross-compiler to build gmp.dll yourself, then install it, its associated headers, and perhaps also its associated import library and/or equivalent statically linkable library, into the same prefix-path as the cross-compiler itself.
I am attempting to compile a C program with multiple files on window platform. However, when I make it, errors are occurred. I have already tried to modify command in makefile but still could not fix it.
This is my GCC command:
gcc -o "SYSMONTR" $(OBJPATH)/chkdsksp ../chkdsksp.c -g -I"$(DB2PATH)/include" -I"$(MYLIBDIR)" $(MYIQDIR)/iqclilib.a $(OBJPATH)/icrou.a -lc -ldb2 -lnsl -L"$(DB2PATH)/lib"
This is result:
gcc -o "SYSMONTR" ../../iLINKOBJ/chkdsksp ../chkdsksp.c -g -I"C:/Program Files/IBM/SQLLIB/include" -I"../../iLINKCLIB" ../../iLINKIQOBJ/iqclilib.a ../../iLINKOBJ/icrou.a -lc -ldb2 -lnsl -L"C:/Program Files/IBM/SQLLIB/lib"
../../iLINKOBJ/chkdsksp: file not recognized: File format not recognized
collect2: error: ld returned 1 exit status
makefile:49: recipe for target `SYSMONTR' failed
make: *** [SYSMONTR] Error 1
What could cause such error and what should I do with it? Using cygwin on Window (IDE: Eclipse).
Any supports will be appreciated.
If chkdsksp is an object file built by another team to run on AIX, you cannot expect it to function -- or even be recognized by your compiler -- on Cygwin. You must contact that team and get a) the source code or b) a version of the object file compiled for your platform (and tested).
I'm trying to compile a makefile which includes the following line:
gcc -I. -I/home/usr/Documents/MTV/include -ggdb3 -Wall -O2 -o ascii2bin.c \
-L. -L../lib -lmatrix -lseq_io -lpic -lm
And this is what I get:
../lib/libmatrix.a: file not recognized: File format not recognized
collect2: ld returned 1 exit status
Any idea on what might happen to libmatrix.a? How can I read what's inside libmatrix.a? I tried using the 'ar -t' command, but it also says file format not recognized.
The project was compiled on Cygwin before by others, and now I'm using ubuntu gcc to try to redo it, could this be the problem?
A library file built for cygwin will not work on linux.
The library itself must be recompiled from source to match the details (ABI, dynamic system library dependencies, etc) of the system on which it is intended to be used.
Cygwin tries to be source compatible with Linux, so if you have the source rebuilding may be straightforward. But it is not binary-compatible, and libraries are basically binary building blocks with metadata to permit linking them together.
I am trying to compile a C program with gcc using the below command
gcc -r client.c -o exe
But getting these errors, and no generation of exe file:
/usr/bin/ld cannot find -lgcc -s
collect2: ld returned 1 exit status
Anyone tell me what I am missing and what is ld here?
ld is the linker or link editor. It is invoked by gcc to link the .o files produced by compiling your code together with various libraries (including libgcc) to produce an executable (exe).
Why are you passing -r to gcc? Do you know what it does? Don't do that.