libotr

Off-the-record messaging library for encrypted instant messaging.

brewmacoslinux

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Off-The-Record (OTR) messaging library

check if libotr is installed and view version$ pkg-config --modversion libotr

compile C program that uses libotr library$ gcc -o chat_app chat.c $(pkg-config --cflags --libs libotr)

find where libotr header files are located$ pkg-config --cflags libotr

get libotr library linking flags$ pkg-config --libs libotr

verify libotr development files are installed$ ls /usr/local/include/libotr/