checking for pthread_create in -lpthread... yes
checking for regexec... yes
checking for GTKHTML... configure: error: Package requirements (libgtkhtml-3.14) were not met:
No package 'libgtkhtml-3.14' found
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
Alternatively, you may set the environment variables GTKHTML_CFLAGS
and GTKHTML_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.