How to set the C_INCLUDE_PATH
Additional directories can be added to the include path using the environment variable C_INCLUDE_PATH (for C header files) or CPLUS_INCLUDE_PATH (for C++ header files). For example, the following commands will add ‘/opt/3rd-Apps/include’ to the include path when compiling C programs:
$
C_INCLUDE_PATH=/opt/3rd-Apps/include
$
export C_INCLUDE_PATH
Example:
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