Pass “-stdlib=libc++” to c++ linker with autotools

Question

I'm trying to compile ImageMagick (in particular Magick++) with clang++ and libc++. Therefore I need to pass -stdlib=libc++ to both compiler and linker.

While CXXFLAGS="-stdlib=libc++" works fine for compiling, LDFLAGS="-stdlib=libc++" seems to only affect the C linker.

How to correctly tell ./configure or make to use this flag when linking C++ libraries?

Answer 1

Use both — CXXFLAGS for the C++ compiler and LDFLAGS for the linker:

./configure CXXFLAGS="-O2 -g -stdlib=libc++" LDFLAGS="-stdlib=libc++"

Answer 2

You could try:

 LDFLAGS="-Wl,-stdlib=libc++"