Do not overwrite CMAKE_C_COMPILER, but export CC (and CXX) before calling cmake: export CC=/usr/local/bin/gcc export CXX=/usr/local/bin/g++ cmake /path/to/your/project make The export only needs to be done once, the first time you configure the project, then those values will be read from the CMake cache. UPDATE: longer explanation on why not overriding CMAKE_C(XX)_COMPILER after Jake’s comment … Read more
You can use the -Q –help=target options: gcc -march=native -Q –help=target … The -v option may also be of use. You can see the documentation on the –help option here.
Explanation The error message told us, that the build-time dependency (in this case it is cc1) was not found, so all we need — install the appropriate package to the system (using package manager // from sources // another way) What is cc1: cc1 is the internal command which takes preprocessed C-language files and converts … Read more
You need to add -fsanitize=address to compiler flags (both CFLAGS and CXXFLAGS) and linker flags (LDFLAGS). You’ve probably added it to your compiler flags only. Note that using explicit -lasan option has been widely discouraged by ASan developers (e.g. here) as it misses some other important linker flags. The only recommended way to link is … Read more
You have to weaken and globalize the symbol using objcopy. -W symbolname –weaken-symbol=symbolname Make symbol symbolname weak. This option may be given more than once. –globalize-symbol=symbolname Give symbol symbolname global scoping so that it is visible outside of the file in which it is defined. This option may be given more than once. This worked … Read more
That’s usually because you don’t have a file called vertex.cpp available to make. Check that: that file exists. you’re in the right directory when you make. Other than that, I’ve not much else to suggest. Perhaps you could give us a directory listing of that directory.
The Easy Way If you’re a typical developer, you can install the easy way, using instructions at http://gcc.gnu.org/wiki/InstallingGCC or your system package manager such as: apt install gcc # for Debian, Ubuntu, etc. yum install gcc # for RedHat, CentOS, etc. brew install gcc # for Mac OS X The Hard Way GCC says the … Read more
There doesn’t seem to be any mention of any equivalent pragmas in the GCC manual’s page on pragmas. One reason I saw for GCC not supporting linking in source code was that sometimes, correct linking depends on link order; and this would require you to make sure that the linking order happens correctly no matter … Read more
gcc -E file.c or g++ -E file.cpp will do this for you. The -E switch forces the compiler to stop after the preprocessing phase, spitting all it’s got at the moment to standard output. Note: Surely you must have some #include directives. The included files get preprocessed, too, so you might get lots of output. … Read more