checking for CSPI_1_0... configure: error: Package requirements (cspi-1.0 >= 1.2.0) were not met: Package cairo was not found in the pkg-config search path. Perhaps you should add the directory containing `cairo.pc' to the PKG_CONFIG_PATH environment variable Package 'cairo', required by 'Pango Cairo', not 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 CSPI_1_0_CFLAGS and CSPI_1_0_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.