Modify the cmake build system so that if it doesn't find bison, it will use the pregenerated file in from the svn (.cvs). Work only for windows for the moment. Tested on Vista64 with MSVC2008express.

llvm-svn: 58090

1 files changed, 25 insertions, 1 deletions

diff --git a/llvm/lib/AsmParser/CMakeLists.txt b/llvm/lib/AsmParser/CMakeLists.txt
index c12f414d8ed..b8283c5d8a7 100644
--- a/llvm/lib/AsmParser/CMakeLists.txt
+++ b/llvm/lib/AsmParser/CMakeLists.txt
@@ -1,15 +1,39 @@
 # AsmParser, with a Bison generated parser:
 include(FindBison)
 find_bison()
+
+IF(BISON_EXECUTABLE)
 bison_generator(
   "llvmAsm"
   "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.y"
   "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.h"
   "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.cpp"
   )
+ELSE(BISON_EXECUTABLE)
+  MESSAGE(STATUS "Bison not found, the pregenerated files will be used")
+
+  IF(WIN32)
+    FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR} WIN_SOURCE_DIR)
+
+    ADD_CUSTOM_COMMAND(
+      OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.cpp"
+      DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.cpp.cvs"
+      COMMAND copy \"${WIN_SOURCE_DIR}\\llvmAsmParser.cpp.cvs\" \"${WIN_SOURCE_DIR}\\llvmAsmParser.cpp\"
+    )
+    ADD_CUSTOM_COMMAND(
+      OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.h"
+      DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/llvmAsmParser.h.cvs"
+      COMMAND copy \"${WIN_SOURCE_DIR}\\llvmAsmParser.h.cvs\" \"${WIN_SOURCE_DIR}\\llvmAsmParser.h\"
+    )
+  ELSE(WIN32)
+    MESSAGE(SEND_ERROR "Not implemented")
+    # fixme do the same with cp instead of copy
+  ENDIF(WIN32)
+ENDIF(BISON_EXECUTABLE)
 
 add_llvm_library(LLVMAsmParser
-  llvmAsmParser.cpp  # Generated from llvmAsmParser.y
+  llvmAsmParser.cpp  # Generated from llvmAsmParser.y or copyied from corresponding .cvs
+  llvmAsmParser.h    # needed for the associated custom command to work
   LLLexer.cpp
   Parser.cpp
   )