cflags '-Wl,-export-dynamic' vs linker flags '-export-dynamic'

Question

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

with CMAKE_C_FLAGS = -Wl,-export-dynamic
with CMAKE_EXE_LINKER_FLAGS = -export-dynamic

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.

Why would you want to export the symbols from an executable? — Jonathan Leffler, Sep 29 '12 at 12:56
@JonathanLeffler Plugins need to call functions from the executable. — ekd123, Sep 29 '12 at 13:13

Sergei Nikulov · Accepted Answer · 2012-09-29T12:58:05.180

4

Provide same options for second variant.

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

Because compiler and linker the same in your case.

edited Sep 29 '12 at 12:58

answered Sep 29 '12 at 12:52

Sergei Nikulov

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for macOS it was `--export-dynamic` (two hyphens) – Daniel Stephens Jul 14 '20 at 20:09

cflags '-Wl,-export-dynamic' vs linker flags '-export-dynamic'

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