cflags' -Wl，-export-dynamic'vs链接器标记' -export-dynamic' [英] cflags '-Wl,-export-dynamic' vs linker flags '-export-dynamic'

问题描述

我在带有Clang的CMake中用不同的编译标志编译了相同的程序(不是库)

I compiled the same program (not library) with different compilation flags, in CMake with Clang

1. with CMAKE_C_FLAGS = -Wl，-export-dynamic
2. 使用CMAKE_EXE_LINKER_FLAGS = -export-dynamic

但是我注意到第二种方法似乎不起作用.我找不到导出的符号.我很惊讶只有第一种方法有效.我不知道C编译器是否执行棘手的操作，Clang或CMake.但是，如何让第二种方式起作用?第一种方法会打印很多警告.

But I noticed that the second way doesn't seem to work. I can't find the exported symbols. I'm so surprised that only the 1st way works. I don't know if the C compilers do something tricky, or Clang, or CMake. But how to let the second way work? The first way would print a lot of warnings.

推荐答案

为第二个变体提供相同的选项.

Provide same options for second variant.

设置(CMAKE_EXE_LINKER_FLAGS"-Wl，-export-dynamic")

set(CMAKE_EXE_LINKER_FLAGS "-Wl,-export-dynamic")

因为在您的情况下，编译器和链接器相同.

Because compiler and linker the same in your case.

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