I'm using Mac OS X Snow Leopard and i can not install PIL 1.1.6. I have faced with: error: command 'gcc' failed with exit status 1 Should I change the version of gcc? Thanks. ...
I'm using Cygwin with GCC, and ultimately I want to read in a file of characters into a vector of characters, and using this code #include <fstream> #include <vector> #include <stdlib.h> using namespace std; int main (int argc, char *argv[] ) { vector<char> string1(); string1.push_back('a'); return 0; } generates this c...
As far as I understand, GCC supports all of its C99 features in C++. But how is C99 strict aliasing handled in C++ code? I know that casting with C casts between unrelated types is not strict-aliasing-safe and may generate incorrect code, but what about C++? Since strict aliasing is not part of C++ standard (is that correct?), GCC must ...
Several questions on this website reveal pitfalls when mixing signed and unsigned types and most compilers seem to do a good job about generating warnings of this type. However, GCC doesn't seem to care when assigning a signed constant to an unsigned type! Consider the following program: /* foo.c */ #include <stdio.h> int main(void) {...
The Android SDK includes the Android NDK, which in turn contains a customised GCC based tool chain for Android on ARM processors; The question is how to build the NDK tool chain to run on Windows to target x86 Android? The tool chain is already setup to build on Windows (cygwin) targeting ARM; There are also existing pre-built (unoffici...
I've been struggling all morning to get PIL installed on Cygwin. The errors I get are not consistent with common errors I find using Google. Perhaps a linux guru can see an obvious problem in this output: $ python setup.py install running install running build running build_py running build_ext building '_imaging' extension gcc -fno-str...
I've read that the gcc compiler can perform certain optimization when compiling an application that references a static library, for instance - it will "pull" in only that code from the static library that the application depends upon. This helps keep the size of the application's executable to a minimum if portions of the static library...
class Foo { public: explicit Foo() {} explicit Foo(Foo&) {} }; Foo d = Foo(); error: no matching function for call to 'Foo::Foo(Foo)' I tried changing Foo(Foo&) to Foo(Foo) as the error suggests, which AFAIK is not a valid constructor, and sure enough I get: error: invalid constructor; you probably meant ‘Foo (const F...
I'm new to gcc, and trying to compile a c++ program which includes mysql.h using the command: g++ -o test test.cpp -L/usr/include/mysql -lmysqlclient -I/usr/include/mysql It works without issue, but I was wondering if someone could explain the arguments to me. I don't like using commands I don't understand. Thanks ...
output of gcov says no of lines executed 70 % of 10 but my code has more than 10 lines.. it does not count braces , else statement please help .. ...
This is probably a very difficult problem to troubleshoot with the information I can practically provide, but I'm hoping someone might be able to at least point me in a possible direction. I'm trying to install HTK (http://htk.eng.cam.ac.uk/), which, according to this page needs to be installed using gcc 3.4. Their method of implementin...
Reading through my book Expert C Programming, I came across the chapter on function interpositioning and how it can lead to some serious hard to find bugs if done unintentionally. The example given in the book is the following: my_source.c mktemp() { ... } main() { mktemp(); getwd(); } libc mktemp(){ ... } getwd(){ ...; mktemp...
Is there a way to disable passing function arguments in registers using gcc 3.3.1 for ARM? ...
I've a C++ program that links at runtime with, lets say, mylib.so. then, the same program uses dlopen()/dlsym() to load a function from myplugin.so, dynamic library that in turn has dependencies to mylib.so. My question is: will the program AND the function in the plugin access the same globals defined in mydlib.so in the same memory ar...
Hi all, when porting my Visual C++ project to GCC, I found out that the wchar_t datatype is 4-byte UTF-32 by default. I could override that with a compiler option, but then the whole wcs* (wcslen, wcscmp, etc.) part of RTL is rendered unusable, since it assumes 4-byte wide strings. For now, I've reimplemented 5-6 of these functions fro...
I have a program written in C, which is named computeWeight.c and to compile it i use the following code chaitu@ubuntu:~$ gcc -Wall -o computeWeight computeWeight.c //to execute it: chaitu@ubuntu:~$ ./computeWeight Do i have any mechansim where i can directly use as mentioned below, chaitu@ubuntu:~$ computeWeight Should i be changi...
Hello everyone! So i have this issue : i am declaring some extern global variables in my C program. If I don't use the -c option for gcc, i get undefined references errors. But with that -c option, the linking is not done, which means that i don't have an executable generated. So how do I solve this? Here is my makefile (written thanks...
The GCC manual says: -fobjc-direct-dispatch Allow fast jumps to the message dispatcher. On Darwin this is accomplished via the comm page. Can I assume this flag eliminates dynamic dispatch? How does it work? I believe it should be as fast as a C function call if it is linked directly. ...
I implement a link list in two files in linklist.h and linklist.c, and I call some functions defined in linklist.h in main function of main.c. linklist.h is included in both linklist.c and main.c. When I compile this program by GCC with Makefile, the error named "undefined reference to xxx" occurs. I think my Makefile is written correctl...
Hi, I was trying to get gcc give error message in a different language. But it still gives me the error message in english. my locale output varun@varun-desktop:$ locale LANG=en_IN LC_CTYPE="es_EC.utf8" LC_NUMERIC="es_EC.utf8" LC_TIME="es_EC.utf8" LC_COLLATE="es_EC.utf8" LC_MONETARY="es_EC.utf8" LC_MESSAGES="es_EC.utf8" LC_PAPER=...