LD_LIBRARY_PATH vs LIBRARY_PATH
I’m building a simple C++ program and I want to temporarily substitute a system supplied shared library with a more recent version of … Read more
gcc
How to see which flags -march=native will activate?
I’m compiling my C++ app using GCC 4.3. Instead of manually selecting the optimization flags I’m using -march=native, which in theory should add … Read more
How to generate gcc debug symbol outside the build target?
I know I can generate debug symbol using -g option. However the symbol is embeded in the target file. Could gcc generate debug … Read more
Disable all gcc warnings
I’m working on a project that will read compiler error messages of a particular variety and do useful things with them. The sample … Read more
libpthread.so.0: error adding symbols: DSO missing from command line
When I’m compiling openvswitch-1.5.0, I’ve encountered the following compile error: gcc -Wstrict-prototypes -Wall -Wno-sign-compare -Wpointer-arith -Wdeclaration-after-statement -Wformat-security -Wswitch-enum -Wunused-parameter -Wstrict-aliasing -Wbad-function-cast -Wcast-align -Wstrict-prototypes … Read more
GCC dump preprocessor defines
Is there a way for gcc/g++ to dump its preprocessor defines from the command line? I mean things like __GNUC__, __STDC__, and so … Read more
I don’t understand -Wl,-rpath -Wl,
For convenience I added the relevant manpages below. My (mis)understanding first: If I need to separate options with ,, that means that the … Read more
How do I force make/GCC to show me the commands?
I’m trying to debug a compilation problem, but I cannot seem to get GCC (or maybe it is make??) to show me the … Read more
gcc makefile error: “No rule to make target …”
I’m trying to use GCC (linux) with a makefile to compile my project. I get the following error which is can’t seem to … Read more
What exactly is LLVM?
I keep hearing about LLVM all the time. It’s in Perl, then it’s in Haskell, then someone uses it in some other language? … Read more