How to link static library in gcc

How to link static library in gcc. When linking static libraries, ld does not care about weak/strong symbols by default : it simply resolves an undefined symbol to a first-encountered symbol (so Aug 27, 2018 · 86. What you lose with non-standard library name is the ability for the linker to search for it, e. 5. o libmymath. Mar 12, 2019 · I want to compile a program and statically link it to glibc, so it can run on other Linux distributions without the user having to do any special configuration. mathDemo. Dec 4, 2023 · Step 3: Create an Object File. o clang: error: linker command failed with exit code 1 (use -v to see invocation) But, If I remove '-static' like this: gcc -L. 1. Again the static library was created from the object file using AR utility: ar -cvq libfact. c testlib. Let's say I have mylib. a): 1. c) target_compile_options(unit2 PRIVATE -fPIC) add_library(merged SHARED $<TARGET_OBJECTS:unit1> $<TARGET_OBJECTS:unit2 Jun 30, 2012 · 1. c and a static library libmine. c libfunc. 2 Mar 23, 2016 · The command I use to archive static library like this: ar rcv libt1. I believe this is misleading. In my next article, I will describe generating libraries in Microsoft Visual C++ and using classes. a -lm. However, in the example, that would defeat the purpose of -static since the only library linked is Oct 9, 2014 · Basically, your first approach is the correct way to do this: gcc test. o test. Jul 15, 2015 · gcc -o myProgram libmylib. Because there is no dependency information, your main program has to link both the libraries and it's important to link lib1 after lib2 when lib2 Sep 5, 2022 · I'm somewhat confused why the link option -l is necessary when statically linking to an archive file. For checking the direct dependencies you should use readelf instead of ldd because ldd also shows the indirect dependencies. c using gcc: gcc -o mylib. This worked. a, you will have to pass the pathname to the file to the link command: LIB_DIR = . foo. a t1. Where the library name is the name of the shared library, minus the first lib part and minus the . so so that they will not be confused as Windows specific *. so for shared libraries on Linux because that's what the GCC binutils' linker searches for, or . lib, located in directory libSDL2. If your source files include headers located in other directories, you may need to use the -I option to instruct your compiler where to search for headers; for more information, see Recipe 1. The standard startup files are used normally, unless -nostartfiles is used. -ltestlib. lib". Second, use your archiver to combine the object files into a static library. dll which are not there in static library at all. o file2. Jan 2, 2013 · 4. 1. -lmine. This should work: $ gcc test_hello_world. And make sure the -L option for a given library appears before the -l option that uses it. Jan 8, 2014 · libcurl project (source code downloaded from curl web. lib SDL2main. int main() {. a mylib. -L is used to specify a library path : - Ldir Add directory dir to the list of directories to be searched for -l. You probably need -L sdp/lib/ -l sdpAPI. The static library is distributed with a function declaration header files . -static -lt1 t. ) compile this mylib. a syntax: Jan 9, 2020 · 1. a and b. Edit: The -B option should immediately preceed one or more -l options. a From the file extension . for ensuring static compilation you can also add. So you cannot use -l with a library named 'lib. a into a shared library is theoretically possible, it is a really bad idea. a file as if it were an ordinary object file. When compiling, the gcc command knows that it's compiling C++ code because of the . cpp) Both C and C++ program have the same body: #include "mylib. Mar 29, 2017 · Add them on the command line is a way to do it. Using a Static Library with GCC 16. In fact, it goes in as a comment and is subsequently used by the linker. make. cpp. a" and puts copies of the object files "add. g++ -std=c++14 code. So if for example you have this: gcc -o my_prog my_prog. (It is possible to build it static if all the %. I suspect libpng (along with a majority of other packages) dropped support for static linking some time Aug 5, 2017 · Static libraries are just archives of object ( . a file) in the compilation command. You're looking for g++ main. This will link myprogram with the static library libfoo. You can directly specify the path to the full library name 62. The next step is to compile the above library files and create an object file mylibrary. Mar 18, 2024 · For example, we may prefer using a shared library to decrease the size of executables. o -c mylib. o ==> -lfoo magic. However, since g++ -fopenmp -static print_omp. Dynamic libraries loader ld. I wrote simple apps with Openssl in C and C++. If the library is external, you might want to add the path Such information simply doesn't belong inside a translation unit. so file extension. o /path/to/foo. One thing i observed is there is a difference in contents of "ar" which i built and the Jun 16, 2012 · It all works now. Example Setup. Specifying the static libraries by file. Use 'lib. c -o mylib. answered Mar 29, 2017 at 2:00. o you will lost some object files if there are members with same name in both a. Aug 7, 2023 · 1. Most autoconf generated configure script will allow you to make a static build: . o with libmymath. a ar x b. Jun 30, 2016 · Now if I issue the command g++ -o main main. Then i get the below error: In function `main': undefined reference to `func()'. exe. No. Using a Library with GCC 16. 2. gcc -c -fPIC mylib. -fuse-ld=lld # Only the libraries you specify are passed to the linker, and options specifying linkage of the system libraries, such as -static-libgcc or -shared-libgcc, are ignored. The -c tells GCC to stop after the compilation step (not run the To link a static or archive library file during compilation using GCC or G++, simply mention the static library (. if you like, you can use an option to tell gcc to look for libraries in the current directory: gcc -L. The -c flags sats not to run the link, then the output consists of object files output by the assembler. a and your shared library *. . -Wl,--as-needed -lB -lA. c -llib1 -llib2 -Bstatic -llib3 -llib4. You can point to the files: $ gcc -static -o mathDemo mathDemo. g. Jan 1, 2012 · If you want to use -static, you have to ensure that you have a static version of the C library installed, which might be tricky to find (most systems do not have a static C library any more). May 27, 2015 · The answer deals with shared libraries and dynamic linking, whereas the question was clearly about the behavior of static linking using static libraries. /tools/net/lib. The g++ command differs from the gcc command in that it knows In due course, after you've fixed the compilation problems, you will run into linking problems. so will look up there when you start your application. Jun 30, 2012 at 20:31. Feb 17, 2017 · 10. h in testcplusplus. a file, if they aren't already. What you've written is "please link with SDL2main. The -B flag affects any -l flags that follow it. We use the option Dec 21, 2016 · You need to pass -l options at the end of the command line: gcc -static hello_curses. I tested this library with a C program (test. Static libraries are the '. Oct 25, 2019 · This gcc command will cause the -lm to be linked statically, but libc to be linked dynamically: gcc -o link_test link_test. Aug 26, 2020 · Add paths to your . Solaris ld: -Wl,-Rdestdir/lib. c) and C++ program (test. o file. Then in the linker script, specify: . The LD_LIBRARY_PATH tells gcc where to look for libraries, but you still need to say what libraries to include. edited Jun 20, 2020 at 9:12. Using Libraries with GCC" 16. c file with the library object file (i. e. c -L. For shared libraries environment variable LD_LIBRARY_PATH is important for start up time. Simply because #pragma comment(lib,"xxx. r means to insert with replacement, c means to create a new archive, and s means to write an Feb 26, 2018 · Iterate over the dynamic link options. Or you have to cancel the effect of -static. Aug 31, 2011 · I have included the appropriate flag on the link line to pull in the static library when linking the dynamic one (e. The -static-liblsan option directs the GCC driver to link liblsan statically, without necessarily linking other libraries statically. This output should show all implicitly linked libraries like -lgcc and -lstdc++. c libc. The order of the libraries can matter though. . You can create multiple library objects from different Oct 7, 2019 · I tried to link with an without -static, I use MinGW on Win7, and it produce 2 different files (the static one is 1. cpp -o openssltest -lcrypto. o files. o file into your executable file: step 1: Add an include line (#include "somelib. If the command prints something other than what you passed, it will be the full path to the static library. txt cmake_minimum_required(VERSION 3. LDFLAGS= -L<Directory where the library resides> -l<library name>. Then lib1 and lib2 are linked dynamically while lib3 and lib4 are linked statically. gcc -o test. c, fun. /configure LDFLAGS=-static. Another option, to avoid the problem, would be to create OBJECT instead of STATIC libraries for unit1 and unit2. You'd compile and statically link it via: Compile main. cpp) CMake automatically adds the lib to the front and the . a and linked statically, whereas any Jul 16, 2015 · For linking, make sure you specify object files (or source files) before libraries (-lxxx options). a at the end on Linux, and . I still don't see any mention of SDL2 and/or SDL2main in your linker flags. Jan 28, 2020 · Alternatively, you could use the explicity linking options to link the static library ( -L switch specifies the static library path and -l followed by the name of the static library): 1. Alternately, you can specify the library path along with the library name: $ gcc -static -o mathDemo -L . c /usr/lib/libm. – James Kanze. Static linking is performed at compile time while the dynamic linking is performed at run time by the operating system. -static On systems that support dynamic linking, this prevents linking with the shared libraries. exe to launch the shell, instead of msys2. – ams. Any number of addional -l options, library names, and object file names could be put between the -Wl,-Bstatic and -Wl,-Bdynamic options along with -lm; all such objects will be linked Jun 7, 2014 · 1. c -Wl,-Bstatic -lm -Wl,-Bdynamic. The only way to do this is to use your librarian/archiver tool (for example ar on Linux) to create a single new static library by concatenating the multiple libraries. The only real difference is the different GCC/Clang, the -arch armv7, the different SDK / include dirs. c to . so or libnet_api. -L. Add -u JNI_OnLoad to your link command. While linking libpthread. It will show you how to create static libraries on Linux using gcc and how to correctly link with them Mar 9, 2022 · The solution is simple: When linking a shared library to your C application, you need to inform the GCC toolchain about the library you want to link. so and ld-linux. Jun 10, 2013 · set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++") This works without passing a -static which creates other big issues, and can essentially mix static and dynamic libraries. f90 file: Jul 1, 2014 · 1. h". Sep 4, 2020 · To create a static library or to add additional object files to an existing static library, we have to use the GNU ar (archiver) program. a' without the -l to include it. For example, take the following make file: test1 : main. step 2: Link the program's . so. First, use your compiler to compile the source files into object files. a to create the final executable. -lt1 t. /configure --prefix=/opt/testmake AR=gcc-ar RANLIB=gcc-ranlib CXXFLAGS='-O3 -flto'. For other libraries, you first switch to static linking with "-static" and then list the libraries to include with separate commands, ie "-lpthread". o object file Mar 5, 2017 · A static library is basically a set of object files that were copied into a single file. lib)) Then right click your project go to propertied Jan 6, 2015 · 10. $ gcc -c sum. h") in a program source file (e. c -o curses -lncurses. Jun 30, 2012 at 15:55. o files are linked directly without any libfoo. As long as the order of static libraries is correct, and as long as dependencies of static libraries are satisfied, I get an ELF using some dynamic libraries (i So, since it seems difficult to find anything approaching a one-liner solution to this: I got LTO working as follows: . o [more object files] will build your libraries. a’ and searches several directories. 3. c. Of course, you cannot use -L then to set the directories to be searched for this Sep 29, 2016 · The solution that the book gives is that you are supposed to include the path to the math library ‘ libm. May 30, 2016 · From MSYS2's documents it says MSYS2 is designed to mitigate DLL hell and bugs by using a common, shared libc. c file that only imports the mylib. Simply pass -Wl,--exclude-libs,ALL to gcc. /path-to-lib -lfun -o appl. , test. You can use the archive:filename syntax in ld. this will not work: gcc main. o using a gcc compiler. We’ll use two static libraries and one object file in our example. a file1. -l is what you need to specify which library to link against : -l library Search the library named library when linking. May 5, 2021 · tell the compiler to link in the code from the library . o bar. to solve the above constraints, a possible solution is to link the generated shared object against static, 32 bit versions of all non-trivial libraries used. The pkg-config --static option relies on proper tagging in the . Say you have main. Static libraries do not link with other static libraries. Lu’s binutils with support for mixed objects. There are also makefile variables that can help you not have to repeat so much, so I would write the first rule as: myProgram: libmylib. o (the output file name is implicit): $ g++ -c -Wall main. Library Naming Conventions 16. Oct 5, 2017 · We can use the -c option with the GNU compiler ( gcc) to stop the compiling process after the assembling stage, translating our files from . so) from a static one (mylib. a so, you need to extract members of different archives into different folder: May 17, 2021 · 0. c // produces a sum. – These's no '-static-something' command, only standard libraries (libgcc and libstdc++) can be set to static linking with one command. lib files to linkerflags. When you link to project libraries you tell the gcc/g++ which libraries to use in a manner (-lname). h, so that you know how to invoke them and May 28, 2010 · I have found that producing libraries is generally easier with GCC. For dynamic linking only with direct dependencies you can use -Wl,--as-needed with adding the libs after -Wl,--as-needed: gcc main. c -o testing -lcustom -lmylib1 -lmylib2 -lmylib3. a -o main. When a program is linked against a static library, the machine code from the object files for any external functions used by the program is copied from the library into the final executable. If you have circular dependencies, you have to list the same library twice. On other systems, this option has no effect. -o myProgram main. g++ openssltest. ) create a mylib. Therefore, it is not intended to create statically linked executable. mod and *. That's it. External libraries are usually provided in two forms: static libraries and shared libraries. a as the source file, so gcc compiler knows to link it later. out. Alternatively it is possible to use H. Using a Dynamic Library with GCC 16. Like : LDFLAGS = -L. a and capture the output. text. o -lmylib -lm. use. Apr 24, 2017 · There's no principal difference whether you link against dynamic or static libraries (besides the -l prefix and omitting the file extension for shared libs). pc files. The C library I mentioned before makes a heavy use of this feature, by mostly splitting itself to an-object-per-function. The extension used by the MinGW port of GCC for shared library Compile with: gcc -Wall -L. a -lm -lc -lgcc -lc. For a static library, the actual code is extracted from the library by the linker and used to build the final executable at the point you compile/build your application. This command creates a static library named "libname. -c means to create an intermediary object file, rather than an executable. However, when the main program calls dlopen() on the dynamic library, the call fails with an "undefined symbol" message referencing a symbol from the static library. Sorted by: 279. /configure --enable-static. Feb 5, 2019 · 19. In my case the shared-dependencies are only the libstd++-6. 67. Usually, gcc is instructed to link against a library foo with the -l foo option. If libubsan is available as a shared library, and the -static option is not Nov 27, 2016 · To compile it, use the following command (pass the static library testlib. c). a without deleting or moving the shared library? Dec 26, 2014 · For gcc you can see various information including the actual command line passed to the linker using the -v option (it seems some implementations want to use --verbose and for the linker -Wl,--verbose ). c bin/libunity. 5 Mo larger). cpp works just fine this does not make sense to me. The typical UNIX linker works from left to right, so put all your dependent libraries on the left, and the ones that satisfy those dependencies on the right of the link line. Use libtool -static -o libfoo. If there is a specific function in the static library that is stripped by the linker as unused, but you really need it (one common example is JNI_OnLoad () function), you can force the linker to keep it (and naturally, all code that is called from this function). 6. a'. You can specify the library search path with the -L option. a), and the linker doesn't complain. In this tutorial, we’ll discuss how to convert several static libraries together with object files to a single shared library. this may help you for this) your project. Possibly shouldn't even really use the word "library" to describe a *. so / lib*. Something like ar cr lib1. LDFLAGS = -static. Version 1. cpp to main. When linking, the gcc command just sees a bunch of . g: gcc -o myprogram -lfoo -L/home/me/foo/lib myprogram. Apr 24, 2016 · The only difference between using an -l option and specifying a file name is that -l surrounds library with ‘lib’ and ‘. *. rather than use -l and -L to get g++ to resolve a library from what it finds, simpy add the full path to the library as an input. So, in your case: $(PROJECT): $(OBJECTS) ar rcs $(PROJECT) $(OBJECTS) You can find an explanation of the options on the man page, but basically: May 26, 2014 · On glibc-based systems, OpenMP enabled applications cannot be statically linked due to limitations of the underlying pthreads-implementation. cpp, to ensure that it is recognized as a C++ file). In such a way it will do the same as with the standard libraries, looking for '. Aug 3, 2017 · Unless you tell it to use static libs only (-static). So linking libpthread. in that case all the code in the object files will In this section we will show how the BUILD_SHARED_LIBS variable can be used to control the default behavior of add_library() , and allow control over how libraries without an explicit type ( STATIC , SHARED, MODULE or OBJECT) are built. So that means that any libc functions called by either crt1. (right click libcurl project in solution explorer -> properties -> configuration properties -> General-> change configuration Type to Static Library (. E. Remember to name your static libraries *. When you only want to statically link one or two libraries with the rest, including system libraries, being dynamic, it is often easier to simply reference the static library by its full name. cpp (no external dependencies except for the standard library and runtime library). o) files, so you can't have embedded dependency information. special : {. c (which should probably have the extension . dll for shared libraries on Windows because that's what the MinGW / MinGW-w64 port of GCC binutils' linker searches for. o -L/path/to foo. You either need to build and link a shared library as a shared library, or you need to accept that using a static library means you will need to specify other libraries on the command line when you use this library. a ’ as follows: $ gcc -Wall calc. c -o t ld: library not found for -lcrt0. o -o test. If providing the --static option does not return correct information necessary to link against the libpng archive, then you cannot use pkg-config for that purpose. Nov 2, 2022 · Use the -l command line option. Compile the path to find the library at runtime into the program. This actually answers also to the related doubt about the 3rd option of directly specifying object files on the gcc command line (i. If you sure your relative path is correct - add SDL2. o print_hi. 59. See Creating a shared and static library with the gnu compiler [gcc] gcc -c -o out. I tried using CFLAGS="-static -static-libgcc" , but it statically links against all other libraries required, except glibc. o files from your external library into a static library . a, gcc will understand that this is a library to link with the This video gives an introduction to static libraries. 2) add_library(unit1 OBJECT unit1. a' and searches several directories. a' second, unless -static is used. -static-libubsan ¶ When the -fsanitize=undefined option is used to link a program, the GCC driver automatically links against libubsan. 25. The option -lnet_api looks for a library named libnet_api. From the gcc man page, it's used to enforce static linking of libraries. a, by specifying full path to it on the link line: gcc main. = 0x1000; Mar 8, 2017 · 16. 0. a file). It will link to libc dynamically, but to other libraries statically (you can choose which libraries to include into binary and which to link to). 24. If that doesn't work, you may be able to pass linker flags in via LDFLAGS, like this: . Jul 5, 2012 · You can use the program ar to create static libraries using the following syntax: ar rcs my_library. collect2: ld returned 1 exit status. --exclude-libs also accepts a list of archives (i. Oct 24, 2018 · If you simply do it as : ar x a. Jul 13, 2018 · I want to compile some of my often-used Fortran code into a static library (assuming I would have access to both *. static library names) for finer granularity on which libraries to hide symbols from. Here is an example. Something like this below. Jun 4, 2014 · I created object for this mylib. c -o t It compile successfully. When the compiler encounters -lfoo, it links in all the symbols from foo that have been requested by a previous file. so' first and '. o" in it. The reason is that libpthread is part of glibc, and all parts of glibc must match exactly, or you'll see strange and un-explainable crashes. gcc -L/customlibs testing. c -o openssltest -lcrypto. edited Dec 17, 2019 at 9:38. A statically linked binary assumes binary compatibility at the kernel system call interface, and we do not make any guarantees on that front. The -c flag compiles the C library and the -o flag creates the library object. c -o main -I. You do this with linker flag: -l<library name>. c to mylib. Shared 13. Apple fully supports static libraries; if you want to create one, just start with the appropriate Xcode project or target template. Nov 14, 2022 · To maintain whole program optimization, it is recommended to link such objects into static library instead. a files). a out. @osgx: those options are implied by -static, so he already knows they won't work. o with. a' files seen earlier. We can use a command like this: $ ar -rc libname. those of the form -l<lib_name>, run the command gcc <lib_path> -print-file-name=lib<lib_name>. Where as in case of dynamic libraries it is only code shared, data is specific to each process. o out. A translation unit can be preprocessed, compiled and assembled even without a linking stage. test2 : main. but, when installing such libraries, usually both static and dynamic versions are installed, and thus gcc will always link against the shared object instead of the static library. Try mingw flags "-static-libgcc -static-libstdc++" (seen here) – osgx. Some systems will always link statically if dynamic linking is not supported. a . a. a into your shared library will: Cause your existing program to crash when Sep 23, 2013 · Note: there is often an option to make "half-static" binary. a ar c c. lib") is in the source file does not mean the compiler consumes it. The order of libraries can matter; list libraries in an order such that libraries listed earlier reference code in those listed later. After gcc adds the implicit libraries it'll look (conceptually) like this: gcc crt1. It looks like for Windows there are not static libraries to link, or I just can't find where they are for download. Using Both Static and Dynamic Libraries with GCC 17. The exact format of the options is dependent on which linker you use: GNU ld (default on GNU/Linux): -Wl,-rpath,destdir/lib. dll libraries. o -lmymath. Jan 26, 2017 · 11. There are two ways to express this to GCC. I create all my static libraries with gcc-ar rcs, only one step. First place all the . h file. o. c -o mylibrary. However, it is possible to specify the full path to the file lib foo. a containing the library instead: $ gcc path/to/libfoo. That is the normal way static library binaries are distributed. I tried to build symbol table with "ar s" and "ranlib" but the results is same. This will tell the linker to transform all the symbols in the static libraries to hidden. It can be done by manually editing the linking command. LIB_NET_API = net_api. May 27, 2012 · Adding to Ghasan's answer. -lfunc -o main. txt. Edit: I figured this out. lib at the end on Windows. And its all ok but only, when you have Openssl installed. cpp -lmath the default behaviour of Linux is to link to the shared library libmath. c will be pulled in from libc. Mar 30, 2010 · The only difference between using an -l option and specifying a file name is that -l surrounds library with lib' and . Vladimir F Героям слава. If you put -lfoo at the beginning, no symbol has been requested yet, so no symbol gets linked. o Use the following command got An error: gcc -L. By doing this, you can install and run Jan 18, 2012 · To link C++ code, you need to use the g++ command, not the gcc command. a files. Static and dynamic linking of libraries are two processes of collecting and combining multiple object files in order to create a single executable. o -o main -lgfortran to link in the standard Fortran libraries. edited May 16, 2011 at 11:48. Nov 27, 2016 · Let’s create a test file and invoke these two methods from the static library. For each dynamic link option, i. It seems like you can just toss the . answered Dec 25, 2012 at 14:22. 2. Alternatively, you could use the explicity linking options to link the static library (-L switch specifies the static library path and -l followed by the name of the static 3 Answers. cpp lib/static_library. – user703016. gcc main. Build libcurl as a static lib. This tutorial explains: steps to create/build static and dynamic (shared) libraries using gcc in C program on Linux platform. It would be very inconvenient to have to specify the paths to built in libraries that we use in our programs. out test. o file as a command line argument to gcc): So, to dynamically link libraries you'll use the file extension: . I have -lfoo for libfoo. a in the folder /home/me/foo/lib. ar rcs libout. cpp; lib/static_library. To accomplish this we need to add BUILD_SHARED_LIBS to the top-level CMakeLists. out with the executable of 2 code files: code. I. 4. lib and *. Static and dynamic linking 16. Or you can just get rid of the whole library searching, and link with with it directly. I compile them like this: gcc openssltest. Creating libraries with GCC Expand section "17. I would like to compile it that I can run them on OS where theres no Openssl installend (linux-like OS). Apple does not support statically linked binaries on Mac OS X. -fuse-ld=bfd # Use the bfd linker instead of the default linker. o" and "mul. I'm not expert at all, but I think it works fine I'm not expert at all, but I think it works fine Sep 5, 2008 · The result is that if you link a static library too early, then the functions in that library are no longer available to static libraries later on the link line. o to build the static library. However, I have encountered the problem with linking. 39. a; Learn how to create an archive library Jun 3, 2022 · Link mathDemo. a files and object files are available) Most of the libraries in mingw are static as I can see in the lib/ directory(all %. Compile Library Files in LInux. To link with net_api. You can link against any library, e. For every one that comes across that problem like me (and has not understand the answer properly): here is a short howto generate a dynamic library (libmylib. o files being suitable for lib*. Assume you have a simplistic “hello, world” program in main. This creates the static library. dll and libgcc_s_dw2-1. cc or . test2 (& c); printf("%d\n", c); printf("%d\n", test1 ( c)); return 0; } To compile it, use the following command (pass the static library testlib. a *. @underscore_d As man ranlib states, it's equivalent to ar s. 1k 4 79 123. cpp suffix (but it's a good idea to use the g++ command anyway). Jul 2, 2010 · ld/gcc-L<LIBRARY_PATH> is important for link time only, regardless shared or static, you cannot link against library, if linker can't find it. Basically, the answer is: Just compile every *. You can specify the input language with gcc -x c++. a This will result in a single executable a. Very good answer, unfortunately both didn't work for some reason. However, you can install mingw-w64 package from pacman, and run mingw64. Never heard of lib*. lib; if not - use absolute path. $ gcc -c mylibrary. History. The library GOMP comes with GCC whereas pthreads and libc come from GLIBC. Vijay Mathew. o or test. Jul 1, 2014 at 10:52. answered May 16, 2011 at 11:42. This is a very important feature of static linking. Each process gets its own copy of the code and data. Edit: In response to your update, the only way I know to select only the symbols that are required is to manually create Apr 30, 2012 · 19. J. Not related to your immediate problem, but you should include testcplusplus. Jul 9, 2013 · Also note that when a library is examined, an object file within it can be left out of the link if it does not provide symbols that the symbol table needs. c file as usual to *. This can be done by passing certain options to g++, which will in turn pass them on to the linker. -fuse-ld=gold # Use the gold linker instead of the default linker. Jan 5, 2017 · target_link_libraries(main bingitup) bingitup is the same name you'd give a target if you create the static library in a CMake project: add_library(bingitup STATIC bingitup. You can also use gfortran by passing -lstdc++. c) target_compile_options(unit1 PRIVATE -fPIC) add_library(unit2 OBJECT unit2. a foo. a -o calc. I want to know is there a way to force the program to link with the static library libmath. specify the somelib. You can avoid that lack of search by using -l:foo. CMakeLists. There are systems to help manage such information; pkg-config is one such. zb pr gy xb ra mi sz gd wm ep