hushui的专栏

#if __GNUC__ >= 5 || __has_builtin(__builtin_add_overflow)/** assume clang and gcc (>=5) to only have builtins for now. */# define add_of(a, b, r) __builtin_add_overflow(a, b, r)# define sub_of(a, b, r) __builtin_sub_overflow(a, b, r)# define.

export CFLAGS=-m32 export CXXFLAGS=-m32export LDFLAGS=-m32 CFLAGS=-m32 CXXFLAGS=-m32 LDFLAGS=-m32 gcc/g++/make Example for busyboxCFLAGS=-m32CXXFLAGS=-m32LDFLAGS=-m32 make defconfigCFLAGS=-m32CXXFLAGS=-m32LDFLAGS=-m32 mak...

No. STL container value types need to be assignable. References are not assignable. (You cannot assign them a different object to reference.)

// for c++ 11 as make_unique is only specified in c++ 14template<typename T, typename... Args>std::unique_ptr<T> make_unique(Args&&... args){ return std::unique_ptr<T>(new T(std::forward<Args>(args)...));}

Question:Buildroot does not allowLD_LIBBRARY_PATHBuild/make user does not have root provilege.Buildroot needs some extra so/lib for host side tool/QT buildSolution[lake@localhost rk3399_linux_release_v2.5.1_20210301]$ ldd /data/sdb/lake/sou..

Thetime_tdatatype is a data type in the ISO C library defined for storing system time values. Such values are returned from the standardtime()library function. This type is a typedef defined in the standard header.ISO C defines time_t as an arithmetic...

Source https://gitlab.com/procps-ng/procps###tool chain[lake@localhost8 toolchain]$ which aarch64-your-toolchain-gnu-gcc~/usr/local/kreatv/toolchain/aarch64/2.0.3/bin/aarch64-your-toolchain-gnu-gcc[lake@localhost8 toolchain]$ basename /usr/lo...

#!/usr/bin/bash# Ugly workaround for building on systems with older GLIBC versions (<2.18) on Centos7/RHEL7.x etc## ld-loader updates to prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.19-4.8# Before you patch, put GLIBC2.19 into prebuilts/gcc/li.

####### patchelf## Change ld-linux-XXXX.so### Change with new glibc version [lake@Centos7 hello]$ pwd/home/lake/extra/source/hello### Centos7/RHEL7.x glibc is 2.17 NOT 2.18/2.19 [lake@Centos7 hello]$ rpm -qf /lib64/libc.so.6glibc-2.17-78.el7..

1.Gdb host side with specified program profix[lake@XXXX gdb-7.10]$ ./configure --target=arm-linux-gnueabihf --program-prefix=arm-YourName-linux-gnueabihf- --prefix=$HOME/usr/local/kreatv/toolchain/hi53/2.0.3[lake@xxxx gdb-7.10]$ ./configure --...

gcc -v -Werror -I$HOME/usr/include -Wl,--verbose your.c -L/home/lake/usr/lib -llua -ldl -lmNote1. -v print complie detail2. -Wl,--verbose print link detail3. -c compile on...

#define PRINT_MACRO_HELPER(x) #x#define PRINT_MACRO(x) #x "=" PRINT_MACRO_HELPER(x) /** C11 standard */#pragma message(PRINT_MACRO(REQUEST_TRACKER_TIMEOUT_VAL))#pragma message(PRINT_MA...

Linux/make$make V=1For CMake, usemake VERBOSE=1; for GNU autotoolsmake V=1Note: make -s (silent) willsuppress all make log.CMakecmake --build build -v>>>CMakeLists.txt...

#define __HELP_PRINT_MACRO(macroname) #macroname#define PRINT_MACRO(macroname) #macroname"="__HELP_PRINT_MACRO(x)

http://www.gaia-gis.it/spatialite-2.4.0-3/mingw_how_to.htmlhttp://www.gaia-gis.it/spatialite-2.4.0-3/mingw_how_to.ht

Example/Test in Ubuntu18$ pkg-config --cflags --libs opencv-I/usr/include/opencv -lopencv_shape -lopencv_stitching -lopencv_superres -lopencv_videostab -lopencv_aruco -lopencv_bgsegm -lopencv_bioin...

Bootloader git clone git://git.denx.de/u-boot.gitkernelgit clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.gitFile System git clone git://busybox.net/busy...

X86/GCC/Linux## on x86-64bit hostgcc -posix -E -dM -< /dev/null#ifdefined(__x86_64__)||defined(_M_X64)/*x8664-bit-----------------------------------------------*/#elif...

Keil/C51#ifdef KEIL /* KEIL compiler */#ifdef __C51__ /* C51 Compiler */C lib/Keil/C51 printf format string!!unsigned short , %d, %uunsigned char , %bd,...

C:\>c:\ti\ccsv7\ccs_base\common\uscif\dbgjtag.exe The utility build date was 'Jul 21 2017'. The utility build time was '19:39:14'. The utility package version is '7.0.48.0'. The utility co...

Refer tohttps://computingforgeeks.com/red-hat-enterprise-linux-rhel-8-new-features/Red Hat Enterprise Linux 8.0 is based on Fedora 28 andupstream kernel 4.18. This provides users with a secure, st...

launch.json { // Use IntelliSense to learn about possible attributes. // Hover to view descriptions of existing attributes. // For more information, visit: https://go.microsoft.com/fwl...

1. Standalone toolchain from NDK r19/2019Google/https://developer.android.com/ndk/guides/other_build_systemsUsing the NDK with other build systemsNote: The content described in this document requi...

1. Linux for example kernelmake V=1For CMake, usemake VERBOSE=1; for GNU autotoolsmake V=1This depends on your make program.Note: make -s (silent) willsuppress all make log.2. make ...

https://blog.kowalczyk.info/article/j/guide-to-predefined-macros-in-c-compilers-gcc-clang-msvc-etc..htmlSoftware • About MeHome/ Guide to predefined macros in C++ compilers (gcc, clang, msvc ...

Reusable Library Switch Library Macro(s) DefinedSingle Threaded /ML LIBC (none) Win32 Console App/Static Lib (No MFC) Obsolete since VC2003 Debug Single MultiThread ...