Gcc static link glibc. Therefore just turn on all three.

Gcc static link glibc It could be that the glibc installation is missing the corresponding object file necessary for static compilation. So I need to build and static linking with some library that does not exist in RedHat machine. I believe this is misleading. Static linking of Glibc. Let me cite from the GNU libc FAQ: 2. As you probably noticed, SDL uses dlopen a lot (in fact, even if you link statically with it, end user can still load their own updated SDL). Create a static libary and link against it. From the question Docker Minimal Image PyInstaller Binary File?'s commands,I get the links about how to make python binary to static,which like the go application demo,say hello world in scratch. I compile them like this: gcc openssltest. This is due to the fact that nss libraries (name server switch) will be loaded dynamically (unless you compile your own glibc - but that defeats the I'm afraid that's not possible, because some of the system binding libraries like glibc might be different on a different linux system. Pretty much everything needs glibc to run. The produced binary won't be fully static linked if the dynamic version of a library is higher in the compiler's library lookup chain than the sudo yum install glibc-static I believe the Ubuntu / Debian equivalent is: sudo apt-get install libc6-dev After that, you pass the option -C target-feature=+crt-static to rustc when compiling your program: $ rustc -o rustfoo -C target-feature=+crt-static main. so means shared object and is the Linux equivalent of a DLL; Most things DON'T link against libc. I tried using The -static-libgcc option links libgcc statically. 8' not found (required by . As I derived from this blog, this post, I tried linking static linking against libgcc and libgc++ using: set gcc; cmake; g++; static-linking; or ask your own question. Do not use the standard system startup files or libraries when linking. musl is one such implementation. cpp -o openssltest -lcrypto And its all ok but only, when you have Link libraries after object files — especially static libraries. 38. c --> compile ok, run ok; gcc main. 1 Compiling Mono (linux) with static glibc Link a static library in gcc without having to specify the 'lib' prefix. c -o openssltest -lcrypto g++ openssltest. Hence use,-nodefaultlibs. c /usr/bin/ld: Skip to main content Stack Overflow @makeworld -static is to build static executable (i. -static-liblsan ¶ When the -fsanitize=leak option is May 31, 2023 · 我们选取了两个开源项目，来尝试替换glibc，这是本文尝试解决的第二个困难。 1. 14. Additional Resources. out [prompt]> ldd sin_static. Check if it actually worked GCC's __attribute__ is not a macro, so your #ifdef test fails in GCC, and probably in other compilers that emulate its attribute syntax. My understanding is that is often customized for the distro, so you don't want to be distributing that to machines running different linux distros/releases. 1 libraries it links fine. In ancient and modern versions of the link environment (I'm not sure of the status quo for modestly old versions as of November 2010), listing the static library before the code. a fails due to unresolved _dl_x86_cpu_features symbol [prompt]> gcc -fPIC main. I'm trying to compile a static binary, however a small part of the binary calls getaddrinfo. 0 Can I dynamically link a binary build for linux to work with . Arguably even worse, under some conditions a static binary will attempt to dynamically open and use libc. 6 and 4. Y when using weak symbols. – alanc. a statically instead of libthrift. This is due to some dependency issues with a new piece of software. g. a is build on my system with glibc 2. 78, which adds support for static linking with glibc. No startup files and only the libraries you specify will be passed to the linker, and options specifying linkage of the system libraries, such as -static-libgcc or -shared-libgcc, are ignored. 0. cpp works just fine this does not make sense to me. a' archive when both are found in the same directory. If that is the case, create the corresponding object file and link it at compilation. There are drop-in replacements for it that you can statically link, like MUSL. The C library developers go to great lengths to ensure that the C library remains backwards compatible. glibcをstatic linkすると、Name Service Switch(NSS)の都合で名前解決に支障が出るバイナリになる。 調べてみると、glibcはNSSの都合上、static linkは推奨していないようだ。 （glibcはNSSはリンク時ではなく実行時に解決できるほうが良いとしている。 The source of file names like that is caused by what is in the run time library. Load 7 more related It could be that the glibc installation is missing the corresponding object file necessary for static compilation. However, CUinit itself seems to be relying on the symbol from glibc which is not available for static linking anymore. The normal link process prefers the '. c -o hello Of course, if you often find yourself needing the static libraries, you can add this package to your configuration. Try EGLIBC instead of glibc. 14(memcpy@GLIBC_2. I tried to compile and link in the following ways, but it still links libglib-2. o files) and then link them directly with the linker (ld). Share From gcc linker docs,-nostdlib. You could try in a nix-shell: $ nix-shell -p glibc. [nix-shell:~]$ gcc -static hello. -static-libtsan When the -fsanitize=thread option is used to link a program, the GCC driver automatically. Since the production device does not have a glib2 runtime environment, I need to statically link to glib2. On multi-libbed systems, ‘gcc -shared’ must select the correct support libraries to link against. Static link: Link with -static. Why do you need to static link with glibc but can't do so with musl? GNU libc is not designed to be statically linked. GCC cannot link against a library foo unless it knows the directory of this library. Net and Mono. And I do a single ,easy demo,app. out -static -lm [prompt]> ll sin_static. This Just pass the -static option to gcc. However, glibc is (still) not supposed to be linked statically (don't ask me, i didn't write it). When --static is given, linking static libraries is enabled, but it's not exclusive. See How can I link to a specific glibc version? Using docker: See Can docker solve a problem of mismatched C shared libraries? According to [RedHat. It's rather my local environment fault, because on other's machines it is linked statically. In researching this, I found the following question: Linking partially static and partially dynamic in GCC. However, googling this issue and reading multiple other SO threads have warned me not to try to static link glibc. You can try to get away with linking libpthread in like below. c -o reload. Linking C++ static Library in C using gcc. 0 Statically Linking glib. a -static -lcurl -lssl -lcrypto -ldl -lm -lz -DCURL_STATICLIB -I/tmp/curl/include -o test He is going with errors: Use the following flags for linking-static -static-libgcc -static-libstdc++ Use these three flags to link against the static versions of all dependencies (assuming gcc). o in order to get a working executable (between the entry point, as seen by the kernel, and the main() function, there is a bit of work to do). Update `android_base` and `linux_musl_base` accordingly. other libraries your app might use that for whatever reason dlopen()s itself to hook into glibc or similar. Linking to so library in gcc. it needs a glibc build which supports static linking). So essentially dynamic linking is actually too slow (sometimes). As a result you have only 2 options: File a report to the developers of CUnit about this and ask them to fix it; Use dynamic linking. a As others have already stated, . a in the hole system. Modified 12 years, 8 months ago. I added the -static option to GCC but it looks like I don't have the static libraries, only the dynamic ones, so I wonder if somebody can tell me where can I download them from and DYNAMIC SYMBOL TABLE: 0000000000000000 DF *UND* 0000000000000000 GLIBC_2. If I write a simple hello world in C and compile with static in runs fine so apparently it's possible to link statically to glibc on my system. out not a dynamic Update to libc 0. 1. a uses memcpy of version 2. Ian May 2, 2021 · 在使用gcc编译链接的时候，默认是采用动态链接的方式，如果要指定静态链接glibc库，则使用-static选项。 例如_静态链接glibc linux 静态编译 glibc,GCC静态链接glibc库 最新推荐文章于 2024-11-19 09:42:58 发布 weixin_39950010 最新推荐文章于 2024-11-19 Oct 14, 2024 · 文章浏览阅读3. and i cannot find libc. 11. How to link static glibc in your makefile. ln -s `g++ -print-file-name=libgomp. a is dynamically linked to glibc, and since my libthrift. c -o lookup This is code for lookup. (you could distribute your program in source form with a free software license; then you could package it for several distributions) I wrote simple apps with Openssl in C and C++. out -rwxrwxr-x 1 cfati cfati 1007744 Jun 13 20:08 sin_static. 14) provided by glibc 2. 3 __ctype_toupper_loc 0000000000000000 DF *UND* 0000000000000000 GLIBC_2. But these seem glibc specific Clang is known to be a bit picky, especially with static libraries (Is this on MacOS, by any chance?) and will try and link to a non-existing runtime library - You can work around this by handing over the static library as an object file instead of a library like. c I'm looking for something like: gcc -static -dynamic-libc index. gcc and glibc are two different things. rs $ ldd rustfoo not a dynamic executable Of course few people run rustc by hand. (requires glibc 4. Edit: Probably not a duplicate of GCC linking libc static and some other library dynamically, revisited? since that question talking about the main elf linking libc statically and this is about a shared object linking libc statically. If you are trying to static link against glibc, you can't run on OmniOS anyway, which requires the illumos libc -- glibc only works with a Linux kernel. 1. In fact, -static gcc flag on Linux doesn't work now. so' library over the '. However, static linking using the glibc-static package is not supported by Red Hat. Moreover, it will be the worst kind of breakage: breakage of a subtle nature. a -o t Update to libc 0. I found that I can you -static-libgcc or -static-libstdc++ to link with static version of standard library but I don't know how to do with glibc. 3 Linking issues with libMathEval. The simplest way to is compile the C code to object files (gcc -c to get some *. tnx I want static linked glibc (v2. 15. 1 GCC linking a static library. cpp -static-libgcc -static-libstdc++ -L. Therefore just turn on all three. When compiling with the standard glibc and -static, this shows a warning message (shown below) and loads several libraries such as libresolv, libnss_files, why is gcc linking dynamically when -l is used? 1. Edit: I figured this out. 2. use cases. 1k次，点赞2次，收藏4次。本文讨论了在使用g++编译C++程序时，如何选择不同的链接选项(-static,-static-libstdc++,-static-libgcc)以实现静态链接，以及这些选项对程序移植性和依赖关系的影响。特别强调了-static选项的全静态编译 Sep 17, 2019 · it should be possible (might be just a matter of passing -static to the linker), though statically linking with glibc is usually advised against because of. How can I link to a specific glibc version? 2. c -lcurl -o test Now I want to raise a static program: gcc test. It is almost as if they hated static linking for some personal reasons, and then they artificially add the NSS and locale excuses that make it impossible. Commented Apr 29, 2015 at 5:54. Avoid enabling crt_static_respected on Android platforms, since that hasn't been tested. That manifests as you saw, presumably by the mechanism of working nastiness on the standard headers #included afterward. Do not use the standard system libraries when . 8) with my program and after that run on any . 6 gcc linking with static libraries. Ask Question Asked 12 years, 8 months ago. The produced binary won't be fully static linked if the dynamic version of a library is higher in the compiler's library lookup chain than the Static linking glibc is a no-no. On Fedora/RHEL/CentOS, you can # yum May 2, 2021 · 怎么解决这个问题呢？就是将glibc进行静态链接。在使用gcc编译链接的时候，默认是采用动态链接的方式，如果要指定静态链接glibc库，则使用-static 选项。 例如： gcc gcc使用-Wl传递连接器参数，ld使用-Bdynamic强制连接动态库，-Bstatic强制连接静态库。所以部分静态，部分动态连接这么写： gcc -Wl,-Bstatic -l<your-static-lib> -Wl,-Bdynamic -l<your Aug 28, 2018 · 写程序时，在开发的 linux 平台编译的程序，到了测试的linux平台往往不能使用，大部分是由于glibc的版本存在差异导致的，为了解决glibc版本兼容的问题，可以使用静态链 Jan 15, 2025 · The -static-libtsan option directs the GCC driver to link libtsan statically, without necessarily linking other libraries statically. However, exec is compiled with dynamically linked libraries. In that case you define your own macro with that (reserved) name, producing undefined behavior. any suggetions? gcc; Ston17 Ston17. py: Link glibc statically but some other library dynamically with GCC. > > Not sure if static linking with glibc is still discouraged (it was, at least in former times) or if thread cancellation still is supposed to work in a pure static build. c But I can't find anything that would let me However, CUinit itself seems to be relying on the symbol from glibc which is not available for static linking anymore. See also glibcのNSSの壁. Yet you can still compile a static executable that calls the dlopen function. gethostbyname and iconv, will malfunction or not work at all in a static binary. Important functions, e. . Note, that in certain situation you don't necessarily need all three flags, but they don't "hurt" either. 22. I try to reinstall gcc and g++ but it doesn't help. e. so. Compiling with both -shared and -static doesn't work since crtbeginT. Add `crt_static_respected` to the `linux_base` target spec. 6: version `GLIBC_2. /hamo: /lib/libc. I prefer static link to dynamic link, so my program is linked to libthrift. Same goes for e. c file guarantees that the symbols in it will be ignored unless there happens to be a main() function in one of the library object files. C standard library The C standard library or libc is the standard library for the C programming language, as specified in the ANSI C standard. a exists on my device. Bugzilla]: Bug 1433347 - glibc: Selective static linking of libm. However, libthrift. How can I use static linkage with glibc with my assembly code? If I link to an alternative to What I would like is to link both libraries statically. You could try passing -static to the linker (via LDFLAGS), but be aware that full static linking is not supported by glibc anymore (resp. so equivalent). 4 Linking a Static library into a shared library. gcc linking with static libraries. I have a program that statically links glib library and dynamically links a shared library that in turn also statically links the same glib library. If you want to statically link against libc then you need to use an implementation which supports static linking. c libc. It does not link libc statically. glibcをstatic linkすると、Name Service Switch(NSS)の都合で名前解決に支障が出るバイナリになる。 調べてみると、glibcはNSSの都合上、static linkは推奨していないようだ。 （glibcはNSSはリンク時ではなく実行時に解決できるほうが良いとしている。 The simplest way to is compile the C code to object files (gcc -c to get some *. I am not a lawyer, gcc and glibc are two different things. Static linking can be enabled using the --static compiler flag. You can report it as a feature request, but it would be more convincing if you detail why you want this at all, i. so (if that is in the correct path) or the . Commented May 28, 2020 at 17:01. whereas the question was clearly about the behavior of static linking using static libraries. a, they link against libc. musl库对glibc有较好的兼容性，编译选项简单，容易上手使用，对c程序能有良好的兼 Mar 12, 2019 · To address the question in your title, it is possible to statically link the C library, but it’s rarely necessary or useful (and can be confusing since some parts of the C library are 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. Red Hat Enterprise Linux 7: Application Compatibility GUIDE; 16. You won’t get bits of glibc mixing in with musl (well, it might be possible, but you’d gcc test. 5 __uflow 0000000000000000 DF *UND etc. c -I/usr/local/include -L/usr/local/lib -Wl,-Bstatic,-lnkf,-lpq,-Bdynamic 最後に-Bdynamicをつけて終わらないと、システムデフォルトのライブラリもスタティックリンクを試みられ結果リンクエラーになるので必ずつける。 Yes this could be better. To link only few static libraries you need to do somethinkg like -Wl,-Bstatic -lSDL2 -Wl,-Bdynamic -lrest_of_dynamic_libs_you_require (most Consider the following: binA depends on libB. musl. so; Hope that clears it up for you. 0 How to link a static library in gcc with other dynamic libraries? 2 glibcのNSSの壁. Currently what I am doing is: gcc -static index. 15, my libthrift. 0. static. a static lib are those referenced (and gcc -static main. 3. 3. Closes rust-lang#65447. Your simple command is linking with the . See the usage instructions in the language reference. GCC linking libc static and some other library dynamically, revisited? 1. c mystrcmp. I try to compile projects with -static -static-libgcc -static-libstdc++ in order to have libraries statically linked. I want static linked glibc (v2. 135 1 1 silver badge 8 8 bronze badges. The library GOMP comes with GCC whereas pthreads and libc come from GLIBC. So I can link GOMP statically like this. -o foo -O3 -fopenmp Just pass the -static option to gcc. 2. The people making that decision are the library developers. pure Everything works fine if you collect it from the dynamic link library: gcc test. This glibc simply does not support static linking. In several cases (e. To achieve static linking, you have several choices, including > > Not sure if static linking with glibc is still discouraged (it was, at least in former times) or if thread cancellation still is supposed to work in a pure static build. Even statically linked programs need some shared libraries which is not acceptable for me. getaddrinfo has to find out how the system resolves DNS calls. a files are static libraries, . 6. a --> compile ok, run : segmentation fault (a strace show that it's access to libc. so -nostdlib $ ldd reload. c: Speaking of license compliance, it's worth noting that if you statically link glibc, you most likely have to ship the source code for your entire application to comply with glibc's LGPL license. Failing to supply the correct flags may lead to subtle defects. Yep. c -DFUNC=sin -o sin_static. libnss issues; licensing Jan 15, 2025 · Footnotes. so statically linked How to make gcc link strong symbol in static library to overwrite weak symbol? Ask Question Asked 12 years, 3 months ago. (you could distribute your program in source form with a free software license; then you could package it for several distributions) gcc -static main. Following the solution in the top answer, I created my own string comparison function in my_strcmp. – Robert Hensing. a (if that is found in a path with no . 6, even though the whole point of static linkage is to avoid such dependencies. o libt1. The -static-libasan option directs the GCC driver to link libasan statically, without necessarily linking other libraries statically. But I believe that statically linking the Glibc is a bad idea. You should first install the glibc-static package. conf customization if you link statically to glibc, functions such as gethostbyname,getpwuid and others will just use the default ways of looking up things. Why a static library can depend on a shared a library? 2. I am sure that libglib-2. Hot Network Questions Predatory Journal keeps sending You do not have dependencies to glibc at all for your code above, so the easiest way is to compile with the flag -nostdlib: $ gcc -fPIC -shared reload. So. 1 Link a static library in gcc without having to specify the 'lib' prefix. On some systems, ‘gcc -shared’ needs to build supplementary stub code for constructors to work. How can I avoid dependency on GLIBC_X. The glibc tries very hard to avoid static linking (since the infamous times of Ulrich Drepper). When I run the program I get a segfault. Nevertheless, my recommendation about your style of static linkage still applies. After debugging in gdb I found that there is a global static variable defined in glib that's being set and it had different values in one call trace and than a later call trace. What I would like is to be able to statically link everything for the binary except for libc. I am not a lawyer, Static linking can be enabled using the --static compiler flag. so's are themselves executables, so when a shared object is linked, any static library dependents are processed by the linker much the same as if an executable was being linked: the only symbols pulled in from the . 1) When I go to link this new software with the 4. Trying to statically link against it will result in breakage. gcc is the compiler, glibc are the runtime libraries. Using a Library with GCC. a` g++ foo. I have a problem where I have two versions of GCC on a machine. To do a fully static link, use -static. You might try to compile and link all your code with gcc -static or g++ -static. /hamo) That program was evidently not statically linked. However, since g++ -fopenmp -static print_omp. What I'm wondering what the -static option on gcc does. c /usr/lib/libc. Statically link C programs. so) Link glibc statically but some other library dynamically with GCC. 4. Viewed 6k times GCC linking a static library. I'm trying to build a package from Fedora that can run on a RedHat 6 machine. $ gcc -static lookup. The usual way is to ship source packages and configure and compile them on the target system. o wasn't compiled with -fPIC. I've never tried them, so the rest in that regard is left up to the reader. Well that's not a problem I ever thought I'd have :) I was hoping to solve this issue by producing a statically linked shared object. I need this option when compiling a certain application, however when I do I get the following error: gcc -static -O3 -o prog prog. It was developed at the same time as the C library POSIX specificati Jan 1, 2014 · The following part of this post will introduce how to “statically” link C and C++ programs with gcc on Linux. Supplying them in cases where they are not necessary is innocuous. c /tmp/curl/lib/libcurl. Load 7 more related Your app will not honor /etc/nsswitch. so which depends on libC. Works for GCC but I don't know about Ocaml. a And it works, but the binary now segfaults quite early. 5. Having trouble linking to a so ld just cannot link to static version of libc. GCC linking a static library. You will have to link your object files with a few extra object files such as /usr/lib/crt1. that links no dynamic libraries at all). gcc t. Mar 12, 2019 · With the GNU C library, this happens in particular with libnss — if you statically link a program which uses DNS-related functions implemented by libnss, in most systems the program will need the dynamic libnss libraries at runtime. c and tried the following compilation: gcc -o foo foo. eawlo qcuve fddf peib iivquj wsyetev kxypvve tzmu erqt itj