llibrary

directory and included in the search path of the host. In fact, we can merge "*_global.h" into the export header file, which has less content and has only one import export declaration. #ifndef library_global_h #define LIBRARY_GLOBAL_H #include Note: the "LIBRARRY_LIBRARY" macro is defined in the Library.pro file. 5, build the library project, will generate *.lib,*.dll,*.a three output files. Third, load test 1, copy the exported header file to the host Engineering directory and add the

a comma, it is processed as several rows. 3. 5. Linker Options) The switch option used to control the connection process. 3.5.1. Object-file-name 3.5.2.-llibrary Connection Library File switch. For example,-lugl connects the program to the libugl. A file. 3.5.3.-lobjc This switch is used to process the library files of object-oriented C language files. 3.5.4.-nostartfiles During the connection, the System-related startup code is not connected. 3.5.5.

by # include -MD It is the same as-M, but the output will be imported into the. d file. -MMD It is the same as-MM, but the output will be imported into the. d file. -Wa, option This option is passed to the assembler; if there is a comma in the option, the option is divided into multiple options, and then passed to the assembler -Wl. option This option is passed to the connection program. If there is a comma in the option, the option is divided into multiple options and then passed to the conne

temporary files. -CombineMultiple source files are passed to the assembler at a time. 3. Other GCC options More useful GCC options: CommandDescription -LLibrary -LLibrary Search for the database named library when linking.Example: $ GCC test. C-lm-o Test -IDir SetDirAdd to the path list of the search header file.Example: $ GCC test. C-I ../INC-o Test -LDir SetDirAdd to the path list of the Search Library f

, a file named A.out is generated under the current path, and then the $./a.out can be printed, but you can usually specify your own executable name by using the option-O.2. Compiling multiple source files3. Using an external function library4. Using shared function libraries and static function libraries5.GCC Options Detailed descriptionmain options for 1.7.2 Gcc/egcstable 1-3 Common options for GCC commandsoption Explanation-ansi only supports the ANSI standard C syntax. This option will prohi

Generate target file-o Specifies the name of the generated file and does not specify a default file name-E is only preprocessed, not compiled, compiled, and linked-S compiles only to assembly language, does not assemble and link-llibrary to search for libraries named library when linking-ldir add dir to the path list of the search library file-idir add dir to the path list of the search header file-static only use static libraries to link, if static

preprocessing, compilation, and assembly three phases together, collectively known as compilation, input. c, generate. O.Common parameters:In fact, I have already demonstrated the use of several parameters such as-E, –S, –c, –o and so on, where-e and-s are seldom used, and-C is used for compiling the generated. o file,-O for specifying the output file name. In addition to these several generation control parameters, there are many parameter settings, here is the main introduction of several com

hello.s-o hello.o-c 4, Hello link target code, generate executable program, Parameter none, put hello.o-> hello. Full command for GCC hello.o-o hello ./hello (Run) Iii. main parameters of GCC 1, Overall parameters -e precompilation only, no other processing -S just compiles not assembler, generates assembly code -C just compiles not linked, generates target file ". O" -o file outputs the output file into file -G contains standard debugging information in an executable program -V Print comman

beginning of the containing file search path;-llibrary prompts the linker to include the specified library when creating the final executable file;-O,-o2,-o3 the optimization state is turned on, this option cannot be used in conjunction with the-G option;-S requires the compiler to generate output from the source code assembler program;-V to start all alerts;-wall cancels the compile operation when an alert occurs, and the alert is considered an erro

Optimization Options -Fcaller-saves-fcse-follow-jumps-fcse-skip-blocks -Fdelayed-branch-felide-constructors -Fexpensive-optimizations-ffast-math-ffloat-store -Fforce-addr-fforce-mem-finline-functions -Fkeep-inline-functions-fmemoize-lookups -Fno-default-inline-fno-defer-pop -Fno-function-cse-fno-inline-fno-peephole -Fomit-frame-pointer-frerun-cse-after-loop -Fschedule-insns-fschedule-insns2 -Fstrength-reduce-fthread-jumps-funroll-all-loops -Funroll-loops-O-O2 Preprocessing options -Aassertion

have very serious consequences. Some code may be deleted or rewritten when the code is optimized during tracing debugging, or reorganized to achieve better performance, which makes tracing and debugging very difficult. Acceleration: Use pipelines instead of temporary files in compilation, -Pipe accelerates Compilation Gcc-pipe foo. c-o foo Common GCC options -C: Notify GCC to cancel the link, that is, compile the source code and generate the target file at the end; -Dmacro defines the speci

-print-prog-name = program Optimization Options -Fcaller-saves-fcse-follow-jumps-fcse-skip-blocks -Fdelayed-branch-felide-constructors -Fexpensive-optimizations-ffast-math-ffloat-store -Fforce-addr-fforce-mem-finline-functions -Fkeep-inline-functions-fmemoize-lookups -Fno-default-inline-fno-defer-pop -Fno-function-cse-fno-inline-fno-peephole -Fomit-frame-pointer-frerun-cse-after-loop -Fschedule-insns-fschedule-insns2 -Fstrength-reduce-fthread-jumps-funroll-all-loops -Funroll-loops-O-O2 Preproc

option will disable certain characteristics of gnu c, such as ASM or typeof keywords. -C only compiles and generates the target file. -Dmacro defines the macro with the string "1. -Dmacro = defn: Define the macro with the string "defn. -E only runs the C pre-compiler. -G generates debugging information. The GNU Debugger can use this information. -Idirectory: specify an additional header file to search for the path directory. -Ldirectory: specify an additional function library to search f

.aQUOTE: B. You can separately specify a directory to search (with-ldirectory) and a library name to search for (with-llibrary, 2 dropping the filename's leading lib and trailing suffix (. a In this case ): $ C ++-I path/to/boost_000034_1 example. cpp-O example"-L ~ /Boost/lib/-lboost_regex-gcc34-mt-d-1_34 I am using. So. So my makefile is: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Cxxflags

an additional function library to search for the path directory.-Search for the specified library when connecting to llibrary.-Msung optimizes code for 486.-O file: generate the specified output file. Used to generate executable files.-O0 is not optimized.-O or-O1 optimized code generation.-O2 is further optimized.-O3 is further optimized than-O2, including the inline function.-Shared shared object generation. It is usually used to create a shared li

directory.-Search for the specified library when connecting to llibrary.-Msung optimizes code for 486.-O file: generate the specified output file. Used to generate executable files.-O0 is not optimized.-O or-O1 optimized code generation.-O2 is further optimized.-O3 is further optimized than-O2, including the inline function.-Shared shared object generation. It is usually used to create a shared library.-Static prohibit the use of shared connections.-

Initial test static libraryAfter a library is referenced, errors may occur due to different library targets during compilation and running of the device and simulator, for example, error: Missing required architecture i386 in file.Solution: Check the library search path settings. The path may be automatically added to delete the path of the relevant library.PS: different compilation targets should be referenced in different libraries (devices and simulators), which are automatically referenced a

-GNU-GCC test. C-L/path/to/sparclib-I/path/to/sparcincludeAppendix: Main gcc/egcs options -ANSI only supports the ANSI standard C syntax. This option will disable certain characteristics of gnu c, such as ASM or typeof keywords. -C only compiles and generates the target file. -Dmacro defines the macro with the string "1. -Dmacro = defn: Define the macro with the string "defn. -E only runs the C pre-compiler. -G generates debugging information. The GNU Debugger can use this information. -I

\ simple \ debug, in Console mode, switch the router to \ libdecodeqr-0.9.3 \ SRC \ sample \ simple \ debug \, then Simple 01-1.jpg The following results are displayed: Solved the following URL Http://www.amazon.co.jp/gp/aw/rd.html? Uid = nullgwdocomo url =/GP/AW/h.html AT = aw_intl6-22 Conclusion Opencv is an open source and free llibrary. I didn't know this useful library before. In order to process images in C ++, and ran to use C +

Today, we mainly use compiler options:Microsoft: it is best to add the "-c" option to the. OBJ file in cl. You can use/isetincludemo-(one worker uses a include‑token and then call linkgenerate. EXE, so that you can use/libpath: libpath to set the Lib path. If multiple library paths are set in CL and all spaces need to be marked with quotation marks, an error is reported.GNU: using gcc, you can only compile links that contain only pure C libraries (iostream is not ).ProgramOtherwise, an error is