标签:gen ext rect require ring function extern ref sed
参考:https://www.hahack.com/codes/cmake/#
源文件一共有三个:main.cpp、MathFunctions.h、MathFunctions.cpp
文件内容分别如下:
main.cpp
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include "MathFunctions.h" 4 5 int main(int argc, char *argv[]) 6 { 7 if (argc < 3){ 8 printf("Usage: %s base exponent \n", argv[0]); 9 return 1; 10 } 11 double base = atof(argv[1]); 12 int exponent = atoi(argv[2]); 13 double result = power(base, exponent); 14 printf("%g ^ %d is %g\n", base, exponent, result); 15 return 0; 16 }
MathFunctions.h
1 #ifndef POWER_H 2 #define POWER_H 3 4 extern double power(double base, int exponent); 5 6 #endif
MathFunctions.cpp
1 /** 2 * power - Calculate the power of number. 3 * @param base: Base value. 4 * @param exponent: Exponent value. 5 * 6 * @return base raised to the power exponent. 7 */ 8 double power(double base, int exponent) 9 { 10 int result = base; 11 int i; 12 13 if (exponent == 0) { 14 return 1; 15 } 16 17 for(i = 1; i < exponent; ++i){ 18 result = result * base; 19 } 20 21 return result; 22 }
CMakeLists.txt内容如下:
# CMake 最低版本号要求 cmake_minimum_required (VERSION 2.8) # 项目信息 project (Demo2) # 查找目录下的所有源文件 # 并将名称保存到 DIR_SRCS 变量 aux_source_directory(. DIR_SRCS) # 指定生成目标 add_executable(Demo ${DIR_SRCS})
这里需要学习的是使用变量获取目录下的所有源文件:
aux_source_directory(. DIR_SRCS)
# 指定生成目标
add_executable(Demo ${DIR_SRCS})
编译及执行结果如下:
wmz@ubuntu:~/Desktop/testcmake1$ cmake . -- The C compiler identification is GNU 5.4.0 -- The CXX compiler identification is GNU 5.4.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Configuring done -- Generating done -- Build files have been written to: /home/wmz/Desktop/testcmake1 wmz@ubuntu:~/Desktop/testcmake1$ make Scanning dependencies of target Demo [ 33%] Building CXX object CMakeFiles/Demo.dir/MatnFunctions.cpp.o [ 66%] Building CXX object CMakeFiles/Demo.dir/main.cpp.o [100%] Linking CXX executable Demo [100%] Built target Demo wmz@ubuntu:~/Desktop/testcmake1$ ls CMakeCache.txt CMakeLists.txt Makefile CMakeFiles Demo MathFunctions.h cmake_install.cmake main.cpp MatnFunctions.cpp wmz@ubuntu:~/Desktop/testcmake1$ ./Demo 2 3 2 ^ 3 is 8
标签:gen ext rect require ring function extern ref sed
原文地址:https://www.cnblogs.com/juluwangshier/p/11609381.html