what's the equivalence of Clang 's "-rdynamic" option in CMake?-CodePudding

I'm trying to create a new programming language by reading LLVM documents. One of the documents is about "Kaleidoscope", a toy programming language. (tutorial's here: https://releases.llvm.org/9.0.0/docs/tutorial/LangImpl01.html).

All the codes in tutorial are written in a single file, and can be compiled by the command below:

clang   -g -O3 toy.cpp -I/usr/lib/llvm-10/include -std=c  14  \
-fno-exceptions -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS \
-L/usr/lib/llvm-10/lib \
-rdynamic \
-lLLVM-10 -o toy

However, I want to manage my project by CMake. I've translate most of the command above into a CMakeLists.txt file (attached afterwards), besides the option "-rdynamic". Does anyone know how to add this option to my CMakeLists.txt ? Thanks in advance!

SET(CMAKE_CXX_COMPILER "/usr/bin/clang  ")
INCLUDE_DIRECTORIES("/usr/lib/llvm-10/include")
LINK_DIRECTORIES("/usr/lib/llvm-10/lib")

SET(_GNU_SOURCE 1)
SET(__STDC_CONSTANT_MACROS 1)
SET(__STDC_FORMAT_MACROS 1)
SET(__STDC_LIMIT_MACROS 1)

# Project configuration
# omit something unrelated

FIND_PACKAGE(LLVM REQUIRED CONFIG)
TARGET_LINK_LIBRARIES(compiler LLVM-10)

CodePudding user response：

First of all, writing CMake commands in upper case was obsolete 10 years ago. Now it is simply unacceptable (in my opinion) so it should be set(), include_directories() etc.

As to your question: rdynamic is a linker flag, so you use target_link_options() command to add it to your target. If it was a compiler flag, you would use target_compile_options().

Example: target_link_options(compiler PRIVATE rdynamic)

CodePudding user response：

Quite akward to find out just adding this to CMakeLists.txt is OK.

set(CMAKE_CXX_FLAGS -rdynamic)