Add automatic handling of CMAKE_PREFIX_PATH of not defined by the user

.gitlab-ci.yml

@@ -38,7 +38,7 @@ build_test:
         - cd ../../fpm
         - mkdir build
         - cd build
-        - cmake -DCMAKE_PREFIX_PATH=${CI_PROJECT_DIR}/../waves -Wno-dev ..
+        - cmake -Wno-dev .. # -DCMAKE_PREFIX_PATH=${CI_PROJECT_DIR}/../waves (handled by default)
         - make -j $(nproc)
         - ctest -j $(nproc) --output-on-failure #--verbose
         - mv ${CI_PROJECT_DIR}/../waves/scripts/format_code.py . # ulgy way to keep a script we need later...
@@ -53,7 +53,6 @@ format:
     stage: fmt_dox
     script:
         - clang-format --version # we use clang-format-10 exclusively
-        - ls build
         - ./build/format_code.py
         - mkdir -p patches
         - if git diff --patch --exit-code > patches/clang-format.patch; then echo "Clang format changed nothing"; else echo "Clang format found changes to make!"; false; fi

fpm/src/CMakeLists.txt

@@ -26,7 +26,10 @@ FIND_PACKAGE(EIGEN 3.3.4 REQUIRED)
 TARGET_INCLUDE_DIRECTORIES(fpm PUBLIC ${EIGEN_INCLUDE_DIRS})
 TARGET_COMPILE_DEFINITIONS(fpm PUBLIC EIGEN_DONT_PARALLELIZE)
 
-# -- WAVES
+# -- WAVES (if no path is provided, assume that it is located next to fpm)
+IF(NOT DEFINED CMAKE_PREFIX_PATH)
+    SET(CMAKE_PREFIX_PATH "${PROJECT_SOURCE_DIR}/../waves/build")
+ENDIF()
 FIND_PACKAGE(WAVES REQUIRED)
 TARGET_INCLUDE_DIRECTORIES(fpm PUBLIC ${WAVES_INCLUDE_DIRS})
 TARGET_LINK_LIBRARIES(fpm ${WAVES_LIBRARIES})