doc

Author: scivision

CMakeLists.txt

@@ -2,11 +2,22 @@
 # * C++ calling Fortran
 # * Fortran calling C++
 # * Fortran calling C
-
+#
 # https://stackoverflow.com/tags/fortran-iso-c-binding/info
-
-# this also works between ABI compatible compilers e.g. Clang 11.0 and GCC 10.2
-
+#
+# this also works between ABI compatible compilers
+# e.g. Clang and GCC.
+#
+# This also works for MacOS with Apple's Clang and Homebrew GCC,
+# by being sure you have in ~/.zshrc like the following:
+# (check directory / versions on your Mac)
+#
+# export LIBRARY_PATH=$LIBRARY_PATH:/Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk/usr/lib
+#
+# export CPLUS_INCLUDE_PATH=/Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk/usr/include
+# export CXXFLAGS=-I$CPLUS_INCLUDE_PATH
+# export CFLAGS=$CXXFLAGS
+#
 # in general, CMake >= 3.14 have better link resolution than CMake 3.13.
 cmake_minimum_required(VERSION 3.14...3.20)