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Merge pull request #793 from mariusgreuel/pr-yacc 

Use yacc/byacc as an alternative to bison, closes #785
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Jörg Wunsch 2022-01-03 14:05:11 +01:00 committed by GitHub
parent c69627a87c e843db55ae
commit aa2f132b24
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1 changed files with 19 additions and 3 deletions
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22
src/CMakeLists.txt
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@ -37,12 +37,13 @@ option(DEBUG_CMAKE "Enable debugging output for this CMake project" OFF)
include(CheckIncludeFile) include(CheckIncludeFile)
include(CheckFunctionExists) include(CheckFunctionExists)
include(GNUInstallDirs) include(GNUInstallDirs)
include(FindPackageMessage)
set(CONFIG_DIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}") set(CONFIG_DIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}")
set(AVRDUDE_EXTERNAL_PATH "${PROJECT_SOURCE_DIR}/external") set(AVRDUDE_EXTERNAL_PATH "${PROJECT_SOURCE_DIR}/external")
# ===================================== # =====================================
# Detect Flex and Bison # Detect flex and yacc/bison
# ===================================== # =====================================
find_package(FLEX) find_package(FLEX)
@ -56,11 +57,26 @@ else()
message(SEND_ERROR "This CMake project requires 'flex', which is not installed on your system." ) message(SEND_ERROR "This CMake project requires 'flex', which is not installed on your system." )
endif() endif()
find_package(BISON) find_package(BISON QUIET)
if(BISON_FOUND) if(BISON_FOUND)
find_package_message(BISON "Found BISON: ${BISON_EXECUTABLE} (found version \"${BISON_VERSION}\")" "[${BISON_EXECUTABLE}][${BISON_VERSION}]")
BISON_TARGET(Parser config_gram.y "${PROJECT_BINARY_DIR}/config_gram.c" DEFINES_FILE "${PROJECT_BINARY_DIR}/config_gram.h") BISON_TARGET(Parser config_gram.y "${PROJECT_BINARY_DIR}/config_gram.c" DEFINES_FILE "${PROJECT_BINARY_DIR}/config_gram.h")
else() else()
message(SEND_ERROR "This CMake project requires 'bison', which is not installed on your system." ) find_program(YACC_EXECUTABLE NAMES yacc byacc DOC "path to the yacc executable")
mark_as_advanced(YACC_EXECUTABLE)
if(YACC_EXECUTABLE)
find_package_message(YACC "Found YACC: ${YACC_EXECUTABLE}" "[${YACC_EXECUTABLE}]")
set(YACC_TARGET_outputs "${PROJECT_BINARY_DIR}/config_gram.c")
add_custom_command(OUTPUT ${YACC_TARGET_outputs}
COMMAND ${YACC_EXECUTABLE} -d -o ${YACC_TARGET_outputs} config_gram.y
VERBATIM
COMMENT "[YACC][Parser] Building parser with yacc"
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)
set(BISON_Parser_OUTPUTS ${YACC_TARGET_outputs})
else()
message(SEND_ERROR "This CMake project requires 'bison', 'yacc', or 'byacc', which is not installed on your system." )
endif()
endif() endif()
# ===================================== # =====================================