-march=<cpu-type> -mtune=<cpu-type> -mfpmath=sse,387 [-mmmx -msse -msse2 -msse3 -m3dnow] -minline-all-stringops -pipe -O3 -fomit-frame-pointer -fforce-addr -finline-functions -finline-limit=800 -fmove-all-movables -freduce-all-givs -freorder-blocks -freorder-functions -f...
-Wcomment -Wformat -Wmain (only for C/ObjC and unless -ffreestanding) -Wmissing-braces -Wnonnull -Wparentheses -Wpointer-sign -Wreorder -Wreturn-type -Wsequence-point -Wsign-compare (only in C++) -Wstrict-aliasing -Wstrict-overflow=1 -Wswitch -Wtrigraphs -Wuninitialized (only...
有时我们的程序会定义一些暂时使用不上的功能和函数,虽然我们不使用这些功能和函数,但是系统默认会自动把整个静态库全部链接到可执行程序中,造成可执行程序的大小大大增加。 为了解决前面分析的问题,我们引入了参数-ffunction-sections -fdata-sections。GCC链接操作是以section作为最小的处理单元,只要一个section中的某...
… while evaluating attribute 'buildInputs' of derivation 'e2fsprogs-1.47.1' at /nix/store/fz4h8yz3qr83p6cfhisgj02knjqg6nxs-source/pkgs/stdenv/generic/make-derivation.nix:383:7: 382| depsHostHost = elemAt (elemAt dependencies 1) 0; 383| buildInputs = elemAt (elemAt dependencies 1)...
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export CFLAGS="flags" ``` In this command, "flags" represent the compilation flags that the user wants to set. For example, if a developer wants to enable all warning messages during compilation, they can use the following command:
Les commandes proctools fournissent des rapports ascii basés sur certaines informations disponibles. La plupart des commandes prennent en entrée une liste d'identifiants de processus ou des chaînes /proc/ProcessID . L'extension de shell /proc/ * peut donc être utilisée pour spécifier ...
In addition to the general optimization of cflags, the flags can also be used to provide security features. For example, the security flag ‘with-stack-protector’ can be used to give the system additional protection against stack-based buffer overflows.Cflags provide a powerful tool...
cc -c -O2 -Wall -fPIC swehouse.c cc -c -O2 -Wall -fPIC swejpl.c cc -c -O2 -Wall -fPIC swemmoon.c cc -c -O2 -Wall -fPIC swemplan.c cc -c -O2 -Wall -fPIC sweph.c cc -c -O2 -Wall -fPIC swephlib.c cc -c -O2 -Wall -fPIC swecl.c cc -c -O2 -Wal...
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