I would like to have a function written in C, but callable from C++ which takes a restricted pointer. This is only available in c99, so g++ doesn't like it, even in extern "C" blocks. How can I get around this limitation? ...
It seems uninitialized global variable is treated as weak symbol in Gcc. What is the reason behind this? ...
I am trying to build the OSKit source code. It is orginally written against gcc 2.95.2, but on my box I got gcc 4.3.2. And 4.3.2 doesn't allow the following syntax: asm volatile(" pushfl popl %0" : "=r" (eflags)); return eflags; 4.3.2 always complains that: error: missing terminating " character There're so many syntax like t...
My ubuntu installed with gcc 4.3.2. But I need gcc 2.95.2 to compile some of my code. I have downloaded the source of 2.95.2. But when I tried to compile it with 4.3.2, i failed. How could I get the 2.95.2 compiled? Many thanks... Update Please take a look at this thread: http://stackoverflow.com/questions/3693632/how-to-build-old-sou...
I'm looking for the fastest way to popcount on large buffer of 512 or more bytes. I can guarantee any required alignment, and the buffer size is always a power of 2. The buffer corresponds to block allocations, so typically the bits are either all set, none set, or mostly set favoring the "left" of the buffer, with occasional holes. Som...
I have a Makefile for linux that I am porting over to Darwin. The makefile takes a bunch of .o files and links them together into a .so shared object. Okay, so I figured (am I wrong about this?) that the best analog for this in Darwin is the dylib. So I changed the -shared flag to -dynamiclib. Now the code that I am linking together ...
it's function for generate md5hash: out = malloc(32+1); void md5sum( u_char *secret_data, int secret_len, char *in,char *out ) { ngx_md5_t md5; u_char hash[16]; ngx_md5_init( ngx_md5_update( ngx_md5_update( ngx_md5_final(hash, int ii; for (ii = 0; ii 16; ii++) { ...
info@s490up # gcc -std=gnu99 -o bla -g -O2 -DSunOS=1 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES= -I/usr/include/libxml2 -I/u/app/oracle/product/11.2/rdbms/demo -I/u/app/oracle/product/11.2/rdbms/public -I/u/app/oracle/product/11.2/rdbms/demo -I/u/app/oracle/product/11.2/rdbms/public blabla.c -lclntsh -lrt -lresolv -lnsl -lsocket -lm -lpthread...
If I run make then how can I tell if gcc or g++ is being used? I tried to look at the Makefile but didn't find anything. Here is the output from make. I can't figure it out from this either. cd threads; make depend make[1]: Entering directory `/home/anthony/nachos-4.0/code/threads' g++ -I../lib -I../threads -I../machine -DTHREADS -Dx86...
In Linux I am trying to compile something that uses the -fwritable-strings option. Apparently this is a gcc option that doesn't work in newer version of gcc. I installed gcc-3.4 on my system, but I think the newer version is still being used because I'm still get the error that says it can't recognize the command line option -fwritable-s...
Hi, Assume I have source code for a lib/tool that works on gcc compiler. Can I use the same code and compile it in visual studio. will that be possible at all? If it is possible, how do I do it? ...
After i updated iPhone SDK to 4.1 I can no longer compile neither for Simulator or Device. I get the following message: error: can't exec '/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2' (No such file or directory) Solution for this? ...
Hey guys, The code below is just showing a Message Box on the screen. The addresses are hardcoded to facilitate: int main () { asm("xorl %eax, %eax \n" "xorl %ebx, %ebx \n" "xorl %ecx, %ecx \n" "xorl %edx, %edx \n" "pushl %ecx \n" //$0x0 "pushl $0x20206...
Is it possible to produce gcov data files (.gcda files) by running an executable linked to a shared library built with the --coverage option? Basically, I have the main library consisting of multiple c++ files compiled into one shared library and then a subdirectory called "test" containing a test program that links to and tests the mai...
Hi, I made a cross compiling toolchain for arm-gcc, configuring binutils, newlib, gcc and gdb for the arm-elf target. The problem I am having is, when I compile a program with arm-elf-gcc on my Mac, it generates a 32 bit executable with cannot be executed in the 64 bit environment. What is the easiest way to circumvent this? I could p...
any libs readily available with gcc compiler? ...
Hey, I have major issue with GNU gdb (GDB) SUSE (6.8.50.20090302-1.5.18). It takes ages to print the value of a nested symbol and hitting Ctrl-C has no effect. Do you know the reason? Is there any workaround? Thanks ...
Hi, I want to allocate more memory to program.l What is the gcc flag that allows you to do so? FYI what I am trying to do is create a very large matrix( really large) which is gonna go through compression algorithms later. So there is no way I can avoid creating such a large matrix to store data. ...
This is a specific gcc related question. I have a library compiled with g++ 4.1.2 that I want to give the user. The user can use our API in their code and link our library to create the final executable. The question I have is related to g++ version compatibility. Some of our users are using g++ 4.4.3, others 4.3.3, and still others 4.2...
Update: I'm working with the GNU-runtime on Linux. The problem does not occur on MacOS with the Apple-runtime. Update 2: I compiled the GNU-runtime on MacOS and build the example with it. The error does not occur on MacOS with the GNU-runtime. I would say the problem is the glibc (since backtrace and backtrace_symbols are glibc extensio...