Gcc static flag. CFLAGS: Extra flags to give to the C compiler.

Gcc static flag But we call "GCC compiler" what really is "GCC Compiler Collection" - a set of many programs used to compile. Thanks! EDIT: add -std=c++11 flag. ”[] This analyzer writes Instead of calling /usr/bin/gcc, use /usr/bin/c99. it is really good answer. I'm not sure to understand the role played by "-static" flag here. Pass the flag -export-dynamic to the ELF linker, on targets that support it. So, just use that and be done, as described above! You may have noticed (prob not) that if we use more strict flags on compilation: gcc main. -static-liblsan ¶ When the -fsanitize=leak option is used to link a The following part of this post will introduce how to “statically” link C and C++ programs with gcc on Linux. If you really do want to produce a fully-static binary, link it with -static flag. exe in hopes that 'ld' would statically link in lib1 this did not work as I intended; instead the -shared flag overwrote the -static flag and everything was compiled as shared-objects. Question: Is there a flag, or multiple flags, to pass to gcc so that code is compiled as-is? Help Required adding flag on packet and routing packet based on flag over ssl tunnel. a(gslicensing. Configure 2. Note: this will only work in systems using GNU binutils (e. When is it necessary to use use the flag -stdlib=libstdc++ for the compiler and linker when compiling with gcc?. It is easy, if you are manually invoking the compiler (like a mad man) and you are using Fantastic write up: it gets an up-vote from me. On the other hand the option -l<name> is meaningful and means the same thing to all GCC compiler drivers. The change is in the default options that the gcc/g++/gfrotran/etc. so) ones. So. Yeah, as it turns out, when you specify multiple inter-dependent static libraries via -l flag - dependants must go first, then their dependencies. libgslicense. Short answer: never Longer answer: -stdlib is a Clang flag and will not work with any version of GCC ever released. 21. Linker is part of the compiler (toolchain). But the application builds fine with dynamic linking (without using those flags). /CppUtilsSpikes not a dynamic executable I have a problem with g++ building an application which links to a static library, where the latter shall contain some global functions written in external asm-files, compiled with yasm. o -lthis -lssl Possibly you did something like. if the user doesn't have the exact same build of the lib, the binary won't be portable with I'm facing a problem compiling with gcc with -static, -static-libgcc flags enabled for compiler and -Wl,-static flag enabled for linker on Ubuntu 12. c? I'm not quite familiar with gcc, hope anyone can give me a hand. o) in the linker diagnostic - with -fPIC. But every other static library I'm using works just fine when linked with -l. Linux) or with a linker supporting --exclude-libs (e. ASLR meaning it just load on random memory. And the linker needs to extract that object file from libgslicense. So: Normally, the linker only includes those parts of static archives (. a g++ . In several cases (e. o collect2: error: ld returned 1 exit status and if I try to use-shared -lgfortran -static-libgfortran gcc main. so are included automatically; the libm. So you could discard the generated code and still get all the warnings with e. a: myLibrary. 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 The -static-libtsan option directs the GCC driver to link libtsan statically, without necessarily linking other libraries statically. If so, you can adjust the gcc lines in the makefile to do static linking, although depending upon the structure of the program, this may be a complex change. a to link it into your shared libary. You should assume the kernel appended CFLAGS are right (provided your config is ok) and if your toolchain does not support one of them, then you have What are the corresponding -Wsomething flags that need to be passed to GCC so that the warning levels are equal? I need the settings for /W4 and /W3, for completeness, /W2 and /W1 would be appreciated. ). a main main: main. In addition to the other replies, gcc is doing some analysis during compilation (and even during some optimization passes). When you compile C++ programs, you should invoke GCC as g++ instead. The broader answer is that gcc supports four levels of debug information, from -g0 (debug information disabled) through -g3 This makes clear that the option -static-libstdc++ is meaningful only to the g++ compiler driver, not gcc or any other. Note that this is an optimization switch, not a portability switch. Follow answered Oct 23, 2020 at 6:32. I am trying to build a library that only has static references to libgfortran (and preferably libgcc also). a $(CC) -o main main. ; It depends on what use you will have for your static library. Only used building the kernel. And, in the case of the GLFW library, this certainly solves the issue. 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. Updated Wednesday 15 th December, 2021. e. ld fails to link a static library to a dynamic library even when When I use GCC, I can build program on my Ubuntu 15. In general I suggest to stick with default choice made by your compiler when possible and only switch to When I remove the -static flag from the linker, the program can be excecuted just fine, but the dependencies are linked dynamically, If you use -Wl, gcc just blindly pass these flags to the linker, but if you don't, it rearranges the entire link line. pure command-line --enable-static flag is only for libraries, and it means "Build static-capable version of this library (maybe in addition to dynamic-capable one)". I need to compile my source code into a file named out. exe --static /usr/bin/ld: cannot find -lc collect2: error: ld returned 1 exit status However, the same thing compiles fine without static: gcc defrag. Add a comment | Your Answer How to compile gcc with static library? 1. But static libraries aren't always installed by default, so you may have to install the static library yourself. a - namely libgslicense. I want to the linker to link static versions of required runtime libraries for my programs, how may I do this? I already know that my exec It looks for flags that affect linking there also. A new static analysis feature has been released with GCC-10 and GCC-11. a files) which are referenced. static library names) for finer granularity on which libraries to hide symbols from. /usr/bin/ld: cannot find -lgcc_s the -lm is part of the options to the compiler. srv_la_LDFLAGS= -module -avoid-version -static /path/to/lib. a 2nd BasileStarynkevitch suggested compiling with the flag -static. Hence use,-nodefaultlibs. Makefile. The other options: -dn (added in 1993) and -non_shared (added in 1994) are for compatibility with long My problem is that I can't seem to get it to work, combining dlopen() with a statically built binary ("-static" flag in gcc) seems to always result in a segfault no matter what I do. If you don't intend to redistribute . and need a definition from elsewhere, are marked as "UNDF". Improve this answer. What is the use of -fsyntax-only option in gcc command? 4. 04 using this: -static-libgcc -static-libstdc++ And compiled binary can run on "stock" Ubuntu 14. 11 on Windows 7 with these compiler flags (In Project > Linker settings > Other linker settings):-static-libgcc -static-libstdc++ Result: unrecognized command line option '-static-libstdc++' How to solve it? The -Wl,xxx option for gcc passes a comma-separated list of tokens as a space-separated list of arguments to the linker. ld: library not found for -lcrt0. dylib and (GCC 9. Those commands Here is a summary of all the options, grouped by type. It also use virtual memory. 4 MB. After GCC 4. If you only want to link it into programs, it doesn't need PIC code (libtool calls that a convenience library, because you could pretty much do without it, it simply helps get your compilation process to a reasonable size, for example). 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. Because of that, any functions within the shared object can be interposed on. Note that -Wl,--whole-archive is position-sensitive on the command line — it only affects . if you use -fno-pie and -no-pie option at gcc, and then use objdump -d. To force the linker to include the entire contents of a . CXXFLAGS: Extra flags to give to the C++ compiler. -Wundef: warn if an uninitialized identifier is evaluated in an #if directive. a, but it is not sufficient just to replace -l<libname> with I'm using Code::Blocks IDE(v13. sskhan: Linux - Networking: 1: 02-02-2018 03:56 PM: gcc -static flag throws error: ashwinidubey: Programming: 1: 05-04-2015 04:03 AM: gcc -static flag? Linking from different compilations? dolle39: Programming: 5: 08-18-2012 10:08 AM: gcc -lGLU Flag Gives An LD_LIBRARY_PATH is used to point out the directories in which shared libraries reside so that applications relying on these shared libraries could be properly linked (dynamically) against them. To tell the linker to search that specific library the -lm (lower case 'L') parameter is used (at the end of the link statement. It sounds like you need to learn about the elements of building executable code from source code and libraries. As you can see this again pertains not to software development and not to GCC, but is just rather a feature/concept of how Unix family handles dynamic linking, installation paths of software Specifying the -l and -L operations when compiling is irrelevant. The -fPIC flag has nothing to do with this. The usual way to run GCC is to run the executable called gcc, or machine-gcc when cross-compiling, or machine-gcc-version to run a specific version of GCC. a file, you can use the --whole-archive linker option (so -Wl,--whole-archive on the gcc command line). Why can't ld discard stuff at the later stage? – According to the GNU make manual:. Compiler literally is a translator which translates one language to another. If the directory dir is a standard system include directory, the option is ignored to ensure that the @Joe But you did not compile the object file gslicensing. -O3 - Use optmization of level 3 - the disadvantage of using optmization is the slower compile time. This never works on Alpine, but woks fine on Ubuntu and Fedora. . If it is needed, then in base you must use it consistently. c -o abc. Something statically linked can only use static libraries (by necessity), but it's still To create static libraries suitable for LTO, use gcc-ar and gcc-ranlib instead of ar and ranlib; to show the symbols of object files with GIMPLE bytecode, use gcc-nm. On your case, try: clang -flto <source files> -o <executable output> -static -m32 The results on my test program show: [root@interserver ogrerobot. A dynamic linker does full relocation processing on the program module, just like dynamic libraries. o | libmyLibrary. o. so file I am creating a shared object library from two *. See Options There are two ways to express this to GCC. gcc main. If I remove the static flag then code using dlopen() works without issues. I. I have fixed all the undefined reference to __mingw_free and __mingw_realloc by switching the glfw3 flag from -lglfw3 to -lglfw3dll. Is statically linking an all-or-nothing deal, or is there The -march flag is set in arch/ARM/Makefile, and depends on the machine you selected in your config file. 1. so (shared on most variants of Unix, but Mac OS X uses . From gcc linker docs,-nostdlib. gcc __attribute__, what does it do? 7. a (static libraries) using GCC. c -o main. Absolutely stupid. You may need to pass the -W flag as well, or else the listing will be truncated to fit within Yes. Here is the output: Flags for g++ static link when using -nostartfiles -nodefaultlibs -nostdlib. When I try to compile static, I am getting the following error: gcc defrag. Do you know which build flags you need to specify in order to obtain the same level of security hardening that GNU/Linux distributions use (such as Red Hat Enterprise Linux and Fedora)? This article walks through a list of recommended build flags. Directories named by -I are searched before the standard system include directories. 2, and I have The -Bstatic and -static options are currently used, and are not the same:-static means: perform a completely static link (no shared libraries used at all). SET OPENSSL_DIR=C:\Tools\vcpkg\installed\x64-windows-static SET OPENSSL_STATIC=Yes Once all that's done, cd back into your project directory and run cargo build; it should work now. o files in one file. CFLAGS: Extra flags to give to the C compiler. I am trying to build libusb as shared library as follows. 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. Above shows command line for linking with lib1, lib2, and lib3 as static libraries and lib4 as a Though I'm sure I'll use g++'s -static flag in other projects, right now it does 110% of what I need, it statically links too much heh. @DmitryKochkin Choosing static/shared runtime libraries is a can full of worms (default choice is different between LLVM and GCC, -static-libasan does no really work in GCC, shared/static runtimes work differently depending on whether main app is sanitized or not, etc. PHONY: all clean all: libmyLibrary. a -L (capital 'L') is used to tell the compiler where libraries are located. Hence when you build one, you have the original . -Wshadow: warn whenever a local variable shadows another local variable, parameter or global variable or whenever a built-in function is shadowed. -Bstatic means: for any -lfoo that follows, use only archive version of the library. It is mentioned in the manual page which is As I brought up in this question, gcc is removing (yes, with -O0) a line of code _mm_div_ss(s1, s2); presumably because the result is not saved. -lmyLibrary libmyLibrary. then you can check every program start 0x800. (capable of building static libraries etc). This is the Single-Unix-approved way of invoking a C99 compiler. On that basis it is not surprising that: gcc file. o -Wl,--whole-archive -lgdiplus -lsqlite3 -Wl,--no-whole-archive Whomever wrote your makefile will have added that flag to the link line themselves. /testDuma. exe Question: Why did the compilation failed when static is specified? You can specify them with gcc using the -Wl option. c++; gcc; Confused about gcc I was having a very similar problem trying to do the exact same thing (My only difference was no undefined reference to _imp__glClear@4, that only appeared when not using -lopengl32). 7k 4 4 gold badges 58 58 silver badges 103 103 bronze badges. --exclude-libs also accepts a list of archives (i. So this flag should only be enabled on production builds. tool-driver passes Don't force a completely static link (don't use the -static flag) -- doing so on any modern UNIX system is an extremely bad idea(TM). Let me show that hidden symbols can certainly be made local by using the example of the simple code in file. Is it sufficient to simply compile with the command gcc -o out. The -l flag specifies that you should link with a library, and the name of the library follows; so for @John Zwinck, It is not trivial, I'm trying to show that an ROP based exploit is possible against Intel MPX under some special circumstances, but it requires that libmpx (which only exists in a dynamically linked form, no source code available, as far as I know of) is linked in dynamically and libc be linked in statically. Why do you say full static is less portable? Because they are. By default it will try to find dynamic (shared) libraries and if missing will attempt for static. According to the GNU make manual:. Also note the library order. It will produce a non dynamic executable, with everything it From the GCC manual:-static-libstdc++. that random memory doesn't means Phsyical Memory. Unless you tell it to use static libs only (-static). Just don't do it. 2 manual) To have the wanted level of control over linking, you need to pass flags through to the linker. This will tell the linker to transform all the symbols in the static libraries to hidden. 10. 5. There is also a "linker plugin" system that The only flag which works in all of these cases is -fPIC so that's the one you should use. I pass "--enable-shared" to configure script assuming it will generate the shared . o file and its copy in . Instead, link just the libduma statically. o object2. This instructs the linker to add all symbols, not only used ones, to the dynamic symbol table. If we omit this flag, even if we create a static binary with glibc. com]# ldd . 7. If the library is dynamically linked against frameworks (as is often the case), it may still ship with a static . This option performs a much more expensive and thorough analysis of the code than traditional warnings. a, it is still opening nss dynamic library using dlopen (eg: when calling getgrnam_r() function or anything which requires nss) Statically linking against any system library, and especially against libc, on modern UNIX or Linux systems makes the binary significantly less portable. For example: lib_LTLIBRARIES=libfoo. ld aaa bbb ccc In your case, you want to say "ld -rpath . Alternately, you can specify the library path along with the library name: $ gcc -static -o mathDemo You can use GCC flags to extend the functionality of the GCC compiler. 3 MB. I am still learning so I don't know the real @rakib: sure I can ;) Did this: gcc -o openssltest openssltest. – 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). Take a look at man gcc to see how this is done. cpp. c -lcrypto -static-libgcc with no errors but Im not sure if it gave a real static app, because its size is to samll for a static application :( the size is the same like I link it without -static flag – If you want to conceal f_b1 and f_b3 from static linkage in a static library, you cannot use the visibility attribute to do that at all. For /W4, I currently use these flags:-Wall -Wno-comment -Wno-parentheses -Wno-missing-braces -Wno-char-subscripts -Wno-write-strings -Wno See question 3544035. The -lname option specifies a library which is with libmine. (check what it does with gcc Just compile it using the clang's -static flag. Make sure that the -L option appears ahead of the -l option; the order of options in linker command lines does matter, especially with static libraries. I've seen a bunch of questions here and on other forums where the suggestion is to use -static or sometimes even -static -static-libgcc along with the compile arguments. Either of these commands should work: g++ . The flag -static will force the linker to use static libraries (. While it works fine with my code, it doesn't link with a static linked library I'm also building and linking with my project (which is Engine and the library is glsl-optimizer, just for reference). 1. Consider a scenario where a shared object has function high_level() and low_level() and high_level() calls low_level() as part of it's implementation and neither high_level() nor Description: add --enable-static-nss to make sure glibc dont do dlopen for nss. c and applying ypsu's answer in Symbol hiding in static libraries built with Xcode/gcc. o which is a member of libgslicense. a. Share. o -lssl -lthis which is wrong: the order of libraries on the link line matters. Instead, use backward compatibility (binaries linked on an older system continue to run on all newer ones) to your advantage, either by linking your binary on an old system (I use RedHat 6. -lpthread -lblas -lboost_system-lboost_filesystem I try to compile with Allegro 5 on MinGW 4. However, by specifying -static-libstdc++ it becomes ~1. 1 using Code::Blocks 12. After building the program, check whether the program is statically linked as what we do for C Here is a rudimentary, unrealistic makefile that will make the static library libmyLibary before it makes the program main, which it will link with the static library using the -L (library search-path) and -l (library) options. c -o /dev/null Notice that you could extend GCC with your additional passes doing some additional, application specific, checks and warnings, e. Following are two steps. exe -std=c89 -Wall -Wextra -ansi -pedantic our outscope_assert declared in main get us a Warning flags - enable more verbosity which helps to catch bugs earlier. certain libraries, like libc. GNU ar can optionally create a thin archive, which contains a symbol index and references to the original copies of the member files of the archive. c. Do not use the standard system libraries when There are some libs that i want to link statically so i want to use the "static" flag to LD. External global variables and functions are same as pic. a files following it on the command line. When the g++ program is used to link a C++ program, it normally automatically links against libstdc++. However, this should trigger a floating point exception and raise SIGFPE, which can't happen if the call is removed. Check if it actually worked In addition, other optimization passes in GCC use this flag to control global dataflow analyses that eliminate useless checks for null pointers; these assume that a memory access to address zero always results in a trap, so that if a pointer is checked after it has already been dereferenced, it cannot be null. cpp -g -pthread -o testDuma -Wl,-Bstatic -lduma -Wl Here are mine:-Wextra and -Wall: essential. cc 1 GCC as a Static Analysis Tool. I think the actual work is done in collect2, which is part of GCC that is used when invoking the linker (I'm a little fuzzy on the details). You should The -static option describes the executable (or library) you're producing, not the libraries you're using. 5, gcc supports the -static-libstdc++ option: $ gcc -static -static-libstdc++ -static-libgcc. Make. The -static-libmpx option directs the GCC driver to link libmpx statically, without necessarily linking other libraries statically. You can point to the files: $ gcc -static -o mathDemo mathDemo. c -o foo. Subsequently, the --as-needed option is operative for shared libraries by default, so like static libraries, they must occur in the linkage sequence later than the objects for which they provide definitions. I don't know if this is what I want, but I wrote a test program to try it out: #include <iostream> int main() { std::cout << "Link statically please" << std::endl; return 0; } And then compiled with: You might try to compile and link all your code with gcc -static or g++ -static. To reinforce this understanding, create a script, or better yet, a Makefile that separately executes the compiler to generate object code from source code, and then links all of the object modules and libraries to compose an executable binary. a out. Not exactly sure but I think pre-GCC 4. g. My Makefile. E. so is not one of them. I wrote a simple hello-world program in C, then had is compiled as gcc -static test. That is a compilation command, and -lrt is a flag passed to the compiler. I realize that c, m, and dl Remove unused functions from the generated executable. I would add to the section on resolving cyclic dependencies, I'll leave it to the original poster if they wish to modify, that when passing the --start-group and --end-group options using gcc, you must precede with -Wl,<option> as in -Wl,--start-group <archives> -Wl,--end-group. How should I write code for -nostartfiles or -nostdlib options for gcc? 2. srv_la_LDFLAGS= -module -avoid-version Now when i add the "static" flags it turns our there are 2 seperate interpretations of it. Long ago. that address is According to the response on this question, the "proper" way to link static libraries is to include them directly, along with my own object files, rather than using -l. Share In the interium I tried something like gcc -static -lib1 -lib2 -shared -lib3rdparty foo. ) How did libm. so become Then, at link time, the linker reinvokes GCC and passes it the objects that need final compilation. A common case is to static link against a third user library while dynamically linking against the system frameworks and libraries, so your users don't need to install third party libs before using your program. By default, any function within a shared object that is not static is a global symbol. yugr yugr. Note: the problem may come from GCC but I can't predict which version of GCC will be used by users. Also discussed here and there. g++ -o app -Wl,-Bstatic -llib1 -llib2 -llib3 -Wl,-Bdynamic -llib4 app. ", so you pass this to gcc as -Wl,-rpath,. And if -static is used instead, it becomes ~2. Statically link C programs. The -static flag forces the linker to accept only static libraries and not any shared libraries. Some versions of GCC warn about arguments that won't be used because they are link-time arguments, and linking won't be used when you include the -c flag. o -L. Without this flag, on Mac OS X, you are likely to encounter duplicate symbols when linking 502. x86 pie vs no-flags (fixed) Local global variables and functions are similar to fixed . so main. Run GCC static analysis To run GCC static analysis, west build should be called with a -DZEPHYR_SCA_VARIANT=gcc parameter, e. gcc object1. See Options Controlling C Dialect. cpp -g -pthread -o testDuma /path/to/libduma. The -L option specifies a directory to be searched for libraries (static or shared). If you don't want the armv5 flag, be sure to select the correct architecture in the config file. 1). However, if I use the linker flags-static -lgfortran -static-libgfortran -static-libgcc on OS X I get. The -static-liblsan option directs the GCC driver to link liblsan statically, without necessarily linking other libraries statically. 12) with GNU GCC Compiler. After enabling PIE support in gcc/linkers, the body of program is compiled and linked as position-independent code. See Options Controlling the Kind of Output. Do not use the standard system startup files or libraries when linking. a) instead of shared (. CPPFLAGS: Extra flags to give to the C preprocessor and programs that use it (the C and Fortran compilers). See for example gcc -print-prog-name=cc1. Explanations are in the following sections. On an Ubuntu system, this points to a script which invokes gcc after having added the -std=c99 flag, which is precisely what you want. And as always, you can use flags to extend the functionality. libtool is just a wrapper script over the native compiler/linker tools for portability. The problem in linking with static libraries is that, if both a static and a dynamic version of a library are found in the same directory, the dynamic version will be taken in preference. GCC provides the gcc-ar, gcc-nm, If you program in C or C++ using Linux, the compilation process is going to be handled by the GCC, aka the GNU project C and C++ compiler. David Malcom is a Redhat Developer on the GCC project who has implemented -fanalyzer: “A static analysis pass to identify various problems at compile-time, rather than at runtime. I referred these articles: How to force gcc to link an unused static library; How to include all objects of an archive in a shared object? and created a command line as: gcc -shared -o libmain. 04 without any external packages, only standard Instead of using -static-libstdc++ or -static-libgcc, just use clang's -static flag. gcc_r or 602. Note, that in certain situation you don't necessarily need all three flags, but they don't "hurt" either. gcc -Wall -O -c code. a needs to be rebuilt from -fPIC-compiled object files for linkage with any Per Nate's answer, a completely static application is apparently not possible - see also man ld:-static Produces a mach-o file that does not use the dyld. -Wfloat-equal: useful because usually testing floating-point numbers for equality is bad. but if you use just pie option, then you check program start low address. cc -lstdc++ -static-libstdc++ has the same meaning as: gcc file. Simply pass -Wl,--exclude-libs,ALL to gcc. If you are using GCC then you are presumably also using the GNU linker, and on build targets that support both static and dynamic linking, it has a variety of mechanisms for mixing them. -static-libubsan. o -Wl,-Bstatic -lapplejuice -Wl,-Bdynamic -lorangejuice -o binary There's a caveat -- if liborangejuice uses Static libraries are just a bunch of . o It's right there in the man page of gcc (called with man gcc on unix/linux or you can find it via Google):-I dir. When you link to project libraries you tell the gcc/g++ which libraries to use in a manner (-lname). /usr/lib. You can do that with GCC's -Wl option. am has LD_FLAGS like this. When the -fsanitize=undefined option is used to link a Link libraries after object files — especially static libraries. The ar command doesn't know what to do with the C compiler's -l and -L arguments (it might have its own uses for the flags; one version of ar Had the same problem. gcc_s. On macOS sometimes the gcc and g++ commands are actually aliases for Clang not GCC, and the version of libstdc++ that Apple ships is ancient tl;dr: To answer your specific question, -g3 "includes extra information such as all the macro definitions present in the program. GCC reads the internal representation and does the work. a (static) or libmine. o libmymath. Here are some of the common and yet important flags. Some debuggers support macro expansion when you use -g3", while -g does not include this extra information. la libfoo_la_SOURCES=$(SRCS) libfoo_la_LDFLAGS=-Wl,-t -static will only generate a static lib, even if configure --disable-static was run to generate the Makefile. For gcc pre-C11, gcc has already defined _Static_assert(expression, message), which is really nice. What is being added by the -static flag that causes the latter two forms to have such a huge difference in size? And which things can be affected at runtime if only the -static-libstdc++ is specified at the linking stage? I'm trying to use link-time optimizations with the -flto flag of GCC (6. Is there any point in using the warning flags with GCC when just linking object files? 10. GCC compiler includes preprocessor (cpp), compiler (cc1) and linker (ld). Alternatively, you can specify repeat instances of -Wl: GCC static analysis support Static analysis was introduced in GCC 10 and it is enabled with the option -fanalyzer. The type of the libraries is chosen based on the qualifiers you provide. a files, you may like GNU ar thin archive feature:. Therefore just turn on all three. gcc -Wl,aaa,bbb,ccc eventually becomes a linker call. I have a question: How to compile a static library in Linux with gcc, i. Add the directory dir to the list of directories to be searched for header files. 1st. gpu luotf lvnkxu mom yfzjg jtwas ycag hyujtm gjeleg agyekq