The IDE can't find include files for some examples and other (grbl)

Arduino: 1.8.2 (FreeBSD), Board: "Arduino/Genuino Uno"

/usr/local/arduino/arduino-builder -dump-prefs -logger=machine -hardware /usr/local/arduino/hardware -tools /usr/local/arduino/tools-builder -built-in-libraries /usr/local/arduino/libraries -libraries /home/bernt/sketchbook/libraries -fqbn=arduino:avr:uno -vid-pid=0X2341_0X0043 -ide-version=10802 -build-path /tmp/arduino_build_5954 -warnings=all -build-cache /tmp/arduino_cache_239776 -prefs=build.warn_data_percentage=75 -verbose /usr/local/arduino/libraries/Bridge/examples/Bridge/Bridge.ino

/usr/local/arduino/arduino-builder -compile -logger=machine -hardware /usr/local/arduino/hardware -tools /usr/local/arduino/tools-builder -built-in-libraries /usr/local/arduino/libraries -libraries /home/bernt/sketchbook/libraries -fqbn=arduino:avr:uno -vid-pid=0X2341_0X0043 -ide-version=10802 -build-path /tmp/arduino_build_5954 -warnings=all -build-cache /tmp/arduino_cache_239776 -prefs=build.warn_data_percentage=75 -verbose /usr/local/arduino/libraries/Bridge/examples/Bridge/Bridge.ino

Using board 'uno' from platform in folder: /usr/local/arduino/hardware/arduino/avr Using core 'arduino' from platform in folder: /usr/local/arduino/hardware/arduino/avr

Detecting libraries used...

"/usr/local/arduino/tools-builder/avr-gcc/4.9.2-atmel3.5.4-arduino2/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10802 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/usr/local/arduino/hardware/arduino/avr/cores/arduino" "-I/usr/local/arduino/hardware/arduino/avr/variants/standard" "/tmp/arduino_build_5954/sketch/Bridge.ino.cpp" -o "/dev/null"

Generating function prototypes...

"/usr/local/arduino/tools-builder/avr-gcc/4.9.2-atmel3.5.4-arduino2/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10802 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/usr/local/arduino/hardware/arduino/avr/cores/arduino" "-I/usr/local/arduino/hardware/arduino/avr/variants/standard" "/tmp/arduino_build_5954/sketch/Bridge.ino.cpp" -o "/tmp/arduino_build_5954/preproc/ctags_target_for_gcc_minus_e.cpp" /usr/local/arduino/libraries/Bridge/examples/Bridge/Bridge.ino:25:20: fatal error: Bridge.h: No such file or directory

exit status 1 Error compiling for board Arduino/Genuino Uno.

Deinstalled and reinstalled all arduino stuff. Still can't find the files.

That was trying to build the internal sketch "bridge" Bareminimum sketch works as expected but doesn't do very much.