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  • Ubuntu: What gcc to use when crosscompiling for the STM32 (Cortex-M3)?

    - by Johan
    Hi I'm trying to get started with the STM32 (Cortex-M3) and my plan is get this working from Ubuntu (9.04 / AMD64). To start with I got the Olimex stm32-h103 header board and the Olimex ARM-USB-OCD jtag, and on to of that I will probably use OpenOCD, gcc and Eclipse. But right now I'm looking into what version of gcc to use and how to setup that to be able to crosscompile the code. There seem to be some arm projects out there but I don't know what to start with, can somebody push me in the right direction? Thanks Johan Update: There seems almost to be what I want from codesourcery, but they seem to focus on IA32 and not AMD64. However in the supported devices I find the Cortex-M3 ARM EABI, ARM M-profile Simulator -mcpu=cortex-m3 -mthumb Update: There is a possibility to install IA32 on AMD64, so maybe the marked answer is obsolete already. Update: Found this link about crosscompile for the Cortex-M3. http://www.eluaproject.net/en_tc_cortex.html http://fanplastic.org/gcc-for-arm-eabi/

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  • What configure options were used when building gcc / libstdc++?

    - by OK
    After reading about the problem of passing empty std::string objects between DLLs and EXEs, I am concerned about the configure options used to build my gcc / libstdc++. More specific I want to know if --enable-fully-dynamic-string was used during ./configure. I'm using MinGW 4.4.0 on Windows XP. Does anybody know the configuration used to build this release? Is there a general way to find this information for any installation of GNU gcc? The gcc manual gives me no hint on this topic. Thanks for your input!

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  • Using GCC 4.2 to compile *.mm files is very very slow, but LLVM has done a very good job, any difference?

    - by jianhua
    My project is obj-c and C++ hybirid, filled with by both *.m and *.mm. When compiling, if choose GCC 4.2, *.m obj-c source files compile speed is very fast but *.mm very very slow, but LLVM 2.0 can do a very good job, it is very fast for both *.m and *.mm. My question: Is there any difference between LLVM and GCC 4.2 during compliling *.mm files? why GCC 3.2 is so slow? Any ieda or discussion will be appreciated, thanks in advance. ENV: XCODE 4.0.1

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  • why i failed to build vsftp?

    - by hugemeow
    make, then failed with the following message. the main point is /lib/libcap.so.1: could not read symbols: File in wrong format, confusing... gcc -c readwrite.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c opts.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c ssl.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c sslslave.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c ptracesandbox.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c ftppolicy.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c sysutil.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -c sysdeputil.c -O2 -Wall -W -Wshadow -idirafter dummyinc gcc -o vsftpd main.o utility.o prelogin.o ftpcmdio.o postlogin.o privsock.o tunables.o ftpdataio.o secbuf.o ls.o postprivparent.o logging.o str.o netstr.o sysstr.o strlist.o banner.o filestr.o parseconf.o secutil.o ascii.o oneprocess.o twoprocess.o privops.o standalone.o hash.o tcpwrap.o ipaddrparse.o access.o features.o readwrite.o opts.o ssl.o sslslave.o ptracesandbox.o ftppolicy.o sysutil.o sysdeputil.o -Wl,-s `./vsf_findlibs.sh` /lib/libcap.so.1: could not read symbols: File in wrong format collect2: ld returned 1 exit status make: *** [vsftpd] Error 1 [mirror@hugemeow vsftpd]$ ls /lib/libc libc-2.5.so libcap.so.1.10 libcidn.so.1 libcom_err.so.2.1 libcrypto.so.0.9.8e libcrypt.so.1 libcap.so.1 libcidn-2.5.so libcom_err.so.2 libcrypt-2.5.so libcrypto.so.6 libc.so.6 [mirror@hugemeow vsftpd]$ ls /lib/libc libc-2.5.so libcap.so.1.10 libcidn.so.1 libcom_err.so.2.1 libcrypto.so.0.9.8e libcrypt.so.1 libcap.so.1 libcidn-2.5.so libcom_err.so.2 libcrypt-2.5.so libcrypto.so.6 libc.so.6 [mirror@hugemeow vsftpd]$ ls /lib/libcap.so.1 -l lrwxrwxrwx 1 root root 14 Mar 20 2012 /lib/libcap.so.1 -> libcap.so.1.10 [mirror@hugemeow vsftpd]$ ls /lib/libcap.so.1 -lh lrwxrwxrwx 1 root root 14 Mar 20 2012 /lib/libcap.so.1 -> libcap.so.1.10 [mirror@hugemeow vsftpd]$ ls /lib/libcap.so.1 -lhL -rwxr-xr-x 1 root root 12K Mar 15 2007 /lib/libcap.so.1 this may have something to do with 64 bit system, but i have make modification to vsf_findlibs.sh 48 # Look for libcap (capabilities) 49 if locate_library /lib64/libcap.so.1; then 50 echo "/lib/libcap.so.1"; 51 elif locate_library /lib64/libcap.so.2; then 52 echo "/lib/libcap.so.2"; 53 else 54 # locate_library /usr/lib/libcap.so && echo "-lcap"; 55 # locate_library /lib/libcap.so && echo "-lcap"; 56 locate_library /lib64/libcap.so.1 && echo "-lcap"; 57 fi but make failed with the same error, why?

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  • Installing gtk and compiling using gcc under windows? [solved]

    - by sil3nt
    I have gcc installed in c:/programfiles (also set as a path variable), and i have all the necessary files for gtk from http://www.gtk.org/download-windows.html, glib,gtk,pango,atk and cairo. Although I have no clue as to how to compile a c program using gtk with the gcc compiler. How do I set everything up so that it works?. (I don't know where each zip file goes.?) basically I don't really know where start.

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  • GCC how to block system calls within a program?

    - by CMPITG
    Does anyone tell me how to block system calls within a program, please? I am building a system which takes a piece of C source code, compiles it with gcc and runs it. For security reasons, I need to prevent the compiled program from calling system calls. Is there any way to do it, from the source code level (e.g. stripping the header files of gcc, detecting malicious external calls, ...) to the executable level?

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  • Is there any way to make gcc print offending lines when it emits an error?

    - by Alex
    I have a large codebase that I've been tasked with porting to 64 bits. The code compiles, but it prints a very large amount of incompatible pointer warnings (as is to be expected.) Is there any way I can have gcc print the line on which the error occurs? At this point I'm just using gcc's error messages to try to track down assumptions that need to be modified, and having to look up every one is not fun.

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  • Installing gcc in Ubuntu 11.10

    - by Chi-Ping Lee
    I want to install gcc on my computer. To do this, I ran the following command: sudo apt-get install build-essential As this runs, it connects (or tries to connect) to the server tw.archive.ubuntu.com. But the server is not working. How can I fix this and get gcc installed? Note: the Taiwan mirror is down as of 2012-06-01 0352. See thread here. This pastebin contains the text of /etc/apt/sources.list, after changing from tw.archive.ubuntu.com to the main server.

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  • My yum repository able to search packages, but not able to install it in RHEL?

    - by mandy
    I set up yum from dvd. Following is the containts of my .repo file: [dvd] name=Red Hat Enterprise Linux Installation DVD baseurl=file:///media/dvd enabled=0. I'm able to search packages. However while installation I'm getting below error: [root@localhost dvd]# yum install libstdc++.x86_64 Loaded plugins: rhnplugin, security This system is not registered with RHN. RHN support will be disabled. Setting up Install Process Nothing to do My Yum Search output: [root@localhost dvd]# yum search gcc Loaded plugins: rhnplugin, security This system is not registered with RHN. RHN support will be disabled. ============================================================================= Matched: gcc ============================================================================= compat-libgcc-296.i386 : Compatibility 2.96-RH libgcc library compat-libstdc++-296.i386 : Compatibility 2.96-RH standard C++ libraries compat-libstdc++-33.i386 : Compatibility standard C++ libraries compat-libstdc++-33.x86_64 : Compatibility standard C++ libraries cpp.x86_64 : The C Preprocessor. libgcc.i386 : GCC version 4.1 shared support library libgcc.x86_64 : GCC version 4.1 shared support library libgcj.i386 : Java runtime library for gcc libgcj.x86_64 : Java runtime library for gcc libstdc++.i386 : GNU Standard C++ Library libstdc++.x86_64 : GNU Standard C++ Library libtermcap.i386 : A basic system library for accessing the termcap database. libtermcap.x86_64 : A basic system library for accessing the termcap database. Please guide me on this, I want to install gcc on my RHEL.

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  • Why did this work with Visual C++, but not with gcc?

    - by Carlos Nunez
    I've been working on a senior project for the last several months now, and a major sticking point in our team's development process has been dealing wtih rifts between Visual-C++ and gcc. (Yes, I know we all should have had the same development environment.) Things are about finished up at this point, but I ran into a moderate bug just today that had me wondering whether Visual-C++ is easier on newbies (like me) by design. In one of my headers, there is a function that relies on strtok to chop up a string, do some comparisons and return a string with a similar format. It works a little something like the following: int main() { string a, b, c; //Do stuff with a and b. c = get_string(a,b); } string get_string(string a, string b) { const char * a_ch, b_ch; a_ch = strtok(a.c_str(),","); b_ch = strtok(b.c_str(),","); } strtok is infamous for being great at tokenizing, but equally great at destroying the original string to be tokenized. Thus, when I compiled this with gcc and tried to do anything with a or b, I got unexpected behavior, since the separator used was completely removed in the string. Here's an example in case I'm unclear; if I set a = "Jim,Bob,Mary" and b="Grace,Soo,Hyun", they would be defined as a="JimBobMary" and b="GraceSooHyun" instead of staying the same like I wanted. However, when I compiled this under Visual C++, I got back the original strings and the program executed fine. I tried dynamically allocating memory to the strings and copying them the "standard" way, but the only way that worked was using malloc() and free(), which I hear is discouraged in C++. While I'm curious about that, the real question I have is this: Why did the program work when compiled in VC++, but not with gcc? (This is one of many conflicts that I experienced while trying to make the code cross-platform.) Thanks in advance! -Carlos Nunez

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  • Can I cross compile with gcc for an old version of a Linux distro on my Ubuntu 9.10?

    - by Johan
    Hi, I have some old hardware with an old version of say SuSE linux running on it. Now I have this fancy development machine running Ubuntu 9.10. Some of the tools I use to compile my C app (written in Python 2.6.x) are not available on the old SuSe box. So... is it possible to compile for that old machine on my dev box? I have the following steps in mind, but would like to cross-check before venturing off into this quest: 1. Find out which static/shared libs my app needs and find/build target version of them 2. Also find the corresponding header files 3. Feed the correct flags to gcc to use the target headers and libraries 4. Feed the correct flags to gcc to use the correct architecture (i386/i686), or do I need a cross-compilation toolchain. 5. Compile, upload and enjoy ;-) I regularly use avr-gcc and cc65, both are cross compiling. I know that you set up a coss compiler for developing something like a gumstix, so it should be possible to do the same for old/other Linux distros, not? C

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  • Beginner problem / error with ansi-c and gcc under ubuntu.

    - by Framester
    Hi, I am just starting programming ansi c with gcc under ubuntu (9.04). I get following error messages: error messages: main.c:6: error: expected identifier or ‘(’ before ‘/’ token In file included from /usr/include/stdio.h:75, from main.c:9: /usr/include/libio.h:332: error: expected specifier-qualifier-list before ‘size_t’ /usr/include/libio.h:364: error: expected declaration specifiers or ‘...’ before ‘size_t’ /usr/include/libio.h:373: error: expected declaration specifiers or ‘...’ before ‘size_t’ /usr/include/libio.h:493: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘_IO_sgetn’ In file included from main.c:9: /usr/include/stdio.h:314: error: expected declaration specifiers or ‘...’ before ‘size_t’ /usr/include/stdio.h:682: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘fread’ /usr/include/stdio.h:688: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘fwrite’ main.c:12: error: expected identifier or ‘(’ before ‘/’ token I assume it is a very simple problem, maybe in the configuration of ubuntu or gcc. I am new to programming under linux as well. I googled for help and went through a tutorial but could not find an answer. Thank you! code: #include <stdio.h> #include <math.h> int main() { printf("TestOutput\n"); return (0); } command: ~/Documents/projects/Trials$ gcc -Wall -ansi main.c

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  • GCC error with variadic templates: "Sorry, unimplemented: cannot expand 'Identifier...' into a fixe

    - by Dennis
    While doing variadic template programming in C++0x on GCC, once in a while I get an error that says "Sorry, unimplemented: cannot expand 'Identifier...' into a fixed-length arugment list." If I remove the "..." in the code then I get a different error: "error: parameter packs not expanded with '...'". So if I have the "..." in, GCC calls that an error, and if I take the "..." out, GCC calls that an error too. The only way I have been able to deal with this is to completely rewrite the template metaprogram from scratch using a different approach, and (with luck) I eventually come up with code that doesn't cause the error. But I would really like to know what I was doing wrong. Despite Googling for it and despite much experimentation, I can't pin down what it is that I'm doing differently between variadic template code that does produce this error, and code that does not have the error. The wording of the error message seems to imply that the code should work according the C++0x standard, but that GCC doesn't support it yet. Or perhaps it is a compiler bug? Here's some code that produces the error. Note: I don't need you to write a correct implementation for me, but rather just to point out what is about my code that is causing this specific error // Used as a container for a set of types. template <typename... Types> struct TypePack { // Given a TypePack<T1, T2, T3> and T=T4, returns TypePack<T1, T2, T3, T4> template <typename T> struct Add { typedef TypePack<Types..., T> type; }; }; // Takes the set (First, Others...) and, while N > 0, adds (First) to TPack. // TPack is a TypePack containing between 0 and N-1 types. template <int N, typename TPack, typename First, typename... Others> struct TypePackFirstN { // sorry, unimplemented: cannot expand ‘Others ...’ into a fixed-length argument list typedef typename TypePackFirstN<N-1, typename TPack::template Add<First>::type, Others...>::type type; }; // The stop condition for TypePackFirstN: when N is 0, return the TypePack that has been built up. template <typename TPack, typename... Others> struct TypePackFirstN<0, TPack, Others...> //sorry, unimplemented: cannot expand ‘Others ...’ into a fixed-length argument list { typedef TPack type; }; EDIT: I've noticed that while a partial template instantiation that looks like does incur the error: template <typename... T> struct SomeStruct<1, 2, 3, T...> {}; Rewriting it as this does not produce an error: template <typename... T> struct SomeStruct<1, 2, 3, TypePack<T...>> {}; It seems that you can declare parameters to partial specializations to be variadic; i.e. this line is OK: template <typename... T> But you cannot actually use those parameter packs in the specialization, i.e. this part is not OK: SomeStruct<1, 2, 3, T... The fact that you can make it work if you wrap the pack in some other type, i.e. like this: SomeStruct<1, 2, 3, TypePack<T...>> to me implies that the declaration of the variadic parameter to a partial template specialization was successful, and you just can't use it directly. Can anyone confirm this?

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  • why gcc 4.x default reserve 8 bytes for stack on linux when calling a method?

    - by nikcname
    as a beginner of asm, I am checking gcc -S generated asm code to learn. why gcc 4.x default reserve 8 bytes for stack when calling a method? func18 is the empty function with no return no param no local var defined. I can't figure out why 8 bytes is reserved here (neither any forum/site mention for the reason, ppl seems take it for granted) is it for the %ebp just push? or return type?! many thx! .globl _func18 _func18: pushl %ebp movl %esp, %ebp subl $8, %esp .text

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  • why gcc 4.x default reserve 8 bytes for stack on linux when calling a method?

    - by nikcname
    as a beginner of asm, I am checking gcc -S generated asm code to learn. why gcc 4.x default reserve 8 bytes for stack when calling a method? func18 is the empty function with no return no param no local var defined. I can't figure out why 8 bytes is reserved here (neither any forum/site mention for the reason, ppl seems take it for granted) is it for the %ebp just push? or return type?! many thx! .globl _func18 _func18: pushl %ebp movl %esp, %ebp subl $8, %esp .text

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  • Can I upgrade Xcode to support a newer version of GCC to learn C++0x?

    - by Shane
    I would like to jump in learn C++0x, which has matured to a level I'm happy with. Xcode on Snow Leopard 10.6 is currently at GCC 4.2.1, and the new features I'd like to try, like std::shared_ptr, lambdas, auto, null pointer constant, unicode string literals, and other bits and pieces, require at least 4.3 (I believe). Ideally I'd use Xcode but I'm not even sure if you can manually upgrade the compiler for Xcode. Is this possible? Otherwise, what is the best way to install a different version of GCC that doesn't interfere with the rest of the system? Regards, Shane

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  • Is it possible to add -pedantic to GCC command line, yet have it not warn about 'long long'

    - by doublep
    I'm using mostly GCC to develop my library, but I'd like to ensure cross-compiler compatibility and especially standard conformance as much as possible. For this, I have add several -W... flags to command line. I'd also add -pedantic, but I have a problem with its warning about long long type. The latter is important for my library and is properly guarded with #if code, i.e. is not compiled on compilers that don't know it anyway. In short: can I have GCC in -pedantic mode warn about any extension except long long?

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  • Why does gcc add symbols to non-debug build?

    - by Matt Holgate
    When I do a release build with gcc (i.e. I do not specify -g), I still seem to end up with symbols in the binary, and have to use strip to remove them. In fact, I can still breakpoint functions and get backtraces in gdb (albeit without line numbers). This surprised me - can anyone explain why this happens? e.g. #include <stdio.h> static void blah(void) { printf("hello world\n"); } int main(int argc, char *argv[]) { blah(); return 0; } gcc -o foo foo.c nm foo | grep blah: 08048374 t blah

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  • Why does gcc think that I am trying to make a function call in my template function signature?

    - by nieldw
    GCC seem to think that I am trying to make a function call in my template function signature. Can anyone please tell me what is wrong with the following? 227 template<class edgeDecor, class vertexDecor, bool dir> 228 vector<Vertex<edgeDecor,vertexDecor,dir>> Graph<edgeDecor,vertexDecor,dir>::vertices() 229 { 230 return V; 231 }; GCC is giving the following: graph.h:228: error: a function call cannot appear in a constant-expression graph.h:228: error: template argument 3 is invalid graph.h:228: error: template argument 1 is invalid graph.h:228: error: template argument 2 is invalid graph.h:229: error: expected unqualified-id before ‘{’ token Thanks a lot.

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