linker

问题 I'm trying to get my head around how the linking process works when producing an executable. To do that I'm reading Ian Taylor's blog series about it, but a lot of it is beyond me at the moment - so I'd like to see how it works in practice. At the moment I produce some object files and link them via gcc with: gcc -m32 -o test.o -c test.c gcc -m32 -o main.o -c main.c gcc -m32 -o test main.o test.o How do I replicate the gcc -m32 -o test main.o test.o stage using ld ? I've tried a very naive:

问题 I'm in the process of moving code written to be compiled for one chip onto another chip. One issue that's come up is a multitude of multiple definition errors. Some of which appear to be due to the linker for the first chip letting me be lazy with declaring variables extern when they are to be used across multiple source files. I didn't use extern at all previously (declare and define a variable in something.h, use it in something.cpp and other source files that included something.h) and it

问题 I'm in the process of moving code written to be compiled for one chip onto another chip. One issue that's come up is a multitude of multiple definition errors. Some of which appear to be due to the linker for the first chip letting me be lazy with declaring variables extern when they are to be used across multiple source files. I didn't use extern at all previously (declare and define a variable in something.h, use it in something.cpp and other source files that included something.h) and it

问题 I'm in the process of moving code written to be compiled for one chip onto another chip. One issue that's come up is a multitude of multiple definition errors. Some of which appear to be due to the linker for the first chip letting me be lazy with declaring variables extern when they are to be used across multiple source files. I didn't use extern at all previously (declare and define a variable in something.h, use it in something.cpp and other source files that included something.h) and it

问题 For a university course, I like to compare code-sizes of functionally similar programs if written and compiled using gcc/clang versus assembly. In the process of re-evaluating how to further shrink the size of some executables, I couldn't trust my eyes when the very same assembly code I assembled/linked 2 years ago now has grown >10x in size after building it again (which true for multiple programs, not only helloworld): $ make as -32 -o helloworld-asm-2020.o helloworld-asm-2020.s ld -melf

问题 For a university course, I like to compare code-sizes of functionally similar programs if written and compiled using gcc/clang versus assembly. In the process of re-evaluating how to further shrink the size of some executables, I couldn't trust my eyes when the very same assembly code I assembled/linked 2 years ago now has grown >10x in size after building it again (which true for multiple programs, not only helloworld): $ make as -32 -o helloworld-asm-2020.o helloworld-asm-2020.s ld -melf

问题 This question already has answers here : Why does the library linker flag sometimes have to go at the end using GCC? (2 answers) Closed 6 years ago . Command like this will work: (LD) $(LDFLAGS) -o reip.app newlib/crt0.o reip.o renetif.o fs.o httpd.o liblwip.a newlib/libc.a But if I place *.a before *.o files - it will be not able to find functions from libs. I've searched through some old projects and found in makefiles lines like these: $(CC) $(LIBS) -o $(TARGET) JukeboxMain.o JukeboxPlayer

问题 I have one application was compiled with Greenhills compiler before, I am trying to use arm-Gcc compiler to compile it, when I try to link the objects with link script (.LD), I got syntax error. I know the link command are different in Greenhills and arm-Gcc, I am trying to find the equivalent ones in Gcc but failed now. I list my Greenhills LD file below and what I tired to change for GCC. Any comments and suggestions are appreciated. Thanks GHS ld file : MEMORY { INIT_SRAM : ORIGIN =

问题 I am trying to make a gtest project in Visual Studio for my console application in the same solution. When i create this project from the "new project" wizard i can choose the project i want to test. So i select my console application. After visual studio has created the gtest project i can see under references that my console project is present. When i try the sample test case everything works. But when i start to include my classes from the console application i get a linker error which

问题 I have several libraries that I want to statically link together. Let's call them Lib1 , Lib2 , Lib3 and Lib4 . Lib4 uses Lib1 and Lib3 ( Lib1 internally uses Lib2 ). I can easily create the DLLs and all work just fine. the issue however is, when I try to build them as static libs I get the already defined objects error which are given bellow. I get these errors when I include Utility.h header file which contains some utility functions that can be used in several libs. For now I am forced to