fable: Update examples to use modern CMake

Author: cassava

fable/examples/contacts/Makefile

@@ -7,22 +7,19 @@ BUILD_DIR := build
 # The build type must be synchronized between Conan (host build type)
 # and CMake, otherwise you will get strange and unhelpful errors.
 BUILD_TYPE := Release
+CMAKE_BUILD_TYPE := $(shell echo ${BUILD_TYPE} | tr '[:upper:]' '[:lower:]')
 
 # This is the output that Conan generates when using
 # `CMakeToolchain` generator AND the `cmake_layout` layout.
-TOOLCHAIN_FILE := ${BUILD_DIR}/generators/conan_toolchain.cmake
+TOOLCHAIN_FILE := ${BUILD_DIR}/${BUILD_TYPE}/generators/conan_toolchain.cmake
 
 .PHONY: all clean
 all: ${TOOLCHAIN_FILE}
-	cmake --build ${BUILD_DIR}
+	cmake --build --preset=${CMAKE_BUILD_TYPE}
 
 ${TOOLCHAIN_FILE}:
 	conan install . --build=missing --install-folder=${BUILD_DIR} -s:h build_type=${BUILD_TYPE}
-	cmake -B ${BUILD_DIR} -S . \
-		-DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \
-		-DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
-		-DCMAKE_EXPORT_COMPILE_COMMANDS=1
-	cmake --build ${BUILD_DIR}
+	cmake --preset=${CMAKE_BUILD_TYPE} -DCMAKE_EXPORT_COMPILE_COMMANDS=1
 
 clean:
 	-rm -r ${BUILD_DIR}

fable/examples/simple_config/Makefile

@@ -7,22 +7,19 @@ BUILD_DIR := build
 # The build type must be synchronized between Conan (host build type)
 # and CMake, otherwise you will get strange and unhelpful errors.
 BUILD_TYPE := Release
+CMAKE_BUILD_TYPE := $(shell echo ${BUILD_TYPE} | tr '[:upper:]' '[:lower:]')
 
 # This is the output that Conan generates when using
 # `CMakeToolchain` generator AND the `cmake_layout` layout.
 TOOLCHAIN_FILE := ${BUILD_DIR}/generators/conan_toolchain.cmake
 
 .PHONY: all clean
 all: ${TOOLCHAIN_FILE}
-	cmake --build ${BUILD_DIR}
+	cmake --build --preset=${CMAKE_BUILD_TYPE}
 
 ${TOOLCHAIN_FILE}:
 	conan install . --build=missing --install-folder=${BUILD_DIR} -s:h build_type=${BUILD_TYPE}
-	cmake -B ${BUILD_DIR} -S . \
-		-DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \
-		-DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
-		-DCMAKE_EXPORT_COMPILE_COMMANDS=1
-	cmake --build ${BUILD_DIR}
+	cmake --preset=${CMAKE_BUILD_TYPE} -DCMAKE_EXPORT_COMPILE_COMMANDS=1
 
 clean:
 	-rm -r ${BUILD_DIR}