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| author | Shao-Ce SUN <sunshaoce@gmail.com> | 2023-10-23 02:23:56 (GMT) |
|---|---|---|
| committer | Shao-Ce SUN <sunshaoce@gmail.com> | 2023-10-23 02:23:56 (GMT) |
| commit | 7ba27a393ae742b6660f075b9ada29ced19cacc0 (patch) | |
| tree | f2901426a5ec9e4268efb9e08be5a2e5da254243 | |
| parent | 885b4efb41c039789b81f0dc0d67c1ed0faea17c (diff) | |
| download | Ninja-7ba27a393ae742b6660f075b9ada29ced19cacc0.zip Ninja-7ba27a393ae742b6660f075b9ada29ced19cacc0.tar.gz Ninja-7ba27a393ae742b6660f075b9ada29ced19cacc0.tar.bz2 | |
Add a check for re2c version
| -rw-r--r-- | CMakeLists.txt | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index d0c62f9..b95dacb 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -57,8 +57,11 @@ else() endif() # --- optional re2c +set(RE2C_PROPER FALSE) find_program(RE2C re2c) -if(RE2C) +execute_process(COMMAND "${RE2C}" --vernum OUTPUT_VARIABLE RE2C_RAW_VERSION) +math(EXPR RE2C_MAJOR_VERSION "${RE2C_RAW_VERSION} / 10000") +if(RE2C AND ${RE2C_MAJOR_VERSION} GREATER 1) # the depfile parser and ninja lexers are generated using re2c. function(re2c IN OUT) add_custom_command(DEPENDS ${IN} OUTPUT ${OUT} @@ -69,7 +72,7 @@ if(RE2C) re2c(${PROJECT_SOURCE_DIR}/src/lexer.in.cc ${PROJECT_BINARY_DIR}/lexer.cc) add_library(libninja-re2c OBJECT ${PROJECT_BINARY_DIR}/depfile_parser.cc ${PROJECT_BINARY_DIR}/lexer.cc) else() - message(WARNING "re2c was not found; changes to src/*.in.cc will not affect your build.") + message(WARNING "re2c ${RE2C_MAJOR_VERSION} or later was not found; changes to src/*.in.cc will not affect your build.") add_library(libninja-re2c OBJECT src/depfile_parser.cc src/lexer.cc) endif() target_include_directories(libninja-re2c PRIVATE src) |