From 7b1dd9aaf10e5e7db2c29c7e4cf187b0dff6304e Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Fri, 4 Nov 2011 19:04:42 +0000
Subject: [PATCH] build/cmake: Coalesce the configuration time header include
 fragment generation for target definitions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143731 91177308-0d34-0410-b5e6-96231b3b80d8
---
 CMakeLists.txt            | 50 ++++++++++++++++++++++++++++++++-------
 lib/Target/CMakeLists.txt | 37 +----------------------------
 2 files changed, 43 insertions(+), 44 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4d932e152b..d29c784e1c2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -127,12 +127,6 @@ foreach(c ${LLVM_TARGETS_TO_BUILD})
   endif()
 endforeach(c)
 
-# Produce llvm/Config/Targets.def
-configure_file(
-  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Targets.def.in
-  ${LLVM_BINARY_DIR}/include/llvm/Config/Targets.def
-  )
-
 set(llvm_builded_incs_dir ${LLVM_BINARY_DIR}/include/llvm)
 
 include(AddLLVMDefinitions)
@@ -211,14 +205,54 @@ option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON)
 include(config-ix)
 include(HandleLLVMOptions)
 
+# Configure all of the various header file fragments LLVM uses which depend on
+# configuration variables.
+set(LLVM_ENUM_ASM_PRINTERS "")
+set(LLVM_ENUM_ASM_PARSERS "")
+set(LLVM_ENUM_DISASSEMBLERS "")
+foreach(t ${LLVM_TARGETS_TO_BUILD})
+  set( td ${LLVM_MAIN_SRC_DIR}/lib/Target/${t} )
+  file(GLOB asmp_file "${td}/*AsmPrinter.cpp")
+  if( asmp_file )
+    set(LLVM_ENUM_ASM_PRINTERS
+      "${LLVM_ENUM_ASM_PRINTERS}LLVM_ASM_PRINTER(${t})\n")
+  endif()
+  if( EXISTS ${td}/AsmParser/CMakeLists.txt )
+    set(LLVM_ENUM_ASM_PARSERS
+      "${LLVM_ENUM_ASM_PARSERS}LLVM_ASM_PARSER(${t})\n")
+  endif()
+  if( EXISTS ${td}/Disassembler/CMakeLists.txt )
+    set(LLVM_ENUM_DISASSEMBLERS
+      "${LLVM_ENUM_DISASSEMBLERS}LLVM_DISASSEMBLER(${t})\n")
+  endif()
+endforeach(t)
+
+# Produce the target definition files, which provide a way for clients to easily
+# include various classes of targets.
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmPrinters.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/AsmPrinters.def
+  )
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmParsers.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/AsmParsers.def
+  )
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Disassemblers.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/Disassemblers.def
+  )
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Targets.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/Targets.def
+  )
+
+# Configure the three LLVM configuration header files.
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/config.h.cmake
   ${LLVM_BINARY_DIR}/include/llvm/Config/config.h)
-
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/llvm-config.h.cmake
   ${LLVM_BINARY_DIR}/include/llvm/Config/llvm-config.h)
-
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Support/DataTypes.h.cmake
   ${LLVM_BINARY_DIR}/include/llvm/Support/DataTypes.h)
diff --git a/lib/Target/CMakeLists.txt b/lib/Target/CMakeLists.txt
index 030f8089abf..60e21895b35 100644
--- a/lib/Target/CMakeLists.txt
+++ b/lib/Target/CMakeLists.txt
@@ -19,42 +19,7 @@ add_llvm_library_dependencies(LLVMTarget
   LLVMSupport
   )
 
-set(LLVM_ENUM_ASM_PRINTERS "")
-set(LLVM_ENUM_ASM_PARSERS "")
-set(LLVM_ENUM_DISASSEMBLERS "")
 foreach(t ${LLVM_TARGETS_TO_BUILD})
   message(STATUS "Targeting ${t}")
   add_subdirectory(${t})
-  set( td ${LLVM_MAIN_SRC_DIR}/lib/Target/${t} )
-  file(GLOB asmp_file "${td}/*AsmPrinter.cpp")
-  if( asmp_file )
-    set(LLVM_ENUM_ASM_PRINTERS
-      "${LLVM_ENUM_ASM_PRINTERS}LLVM_ASM_PRINTER(${t})\n")
-  endif()
-  if( EXISTS ${td}/AsmParser/CMakeLists.txt )
-    set(LLVM_ENUM_ASM_PARSERS
-      "${LLVM_ENUM_ASM_PARSERS}LLVM_ASM_PARSER(${t})\n")
-  endif()
-  if( EXISTS ${td}/Disassembler/CMakeLists.txt )
-    set(LLVM_ENUM_DISASSEMBLERS
-      "${LLVM_ENUM_DISASSEMBLERS}LLVM_DISASSEMBLER(${t})\n")
-  endif()
-endforeach(t)
-
-# Produce llvm/Config/AsmPrinters.def
-configure_file(
-  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmPrinters.def.in
-  ${LLVM_BINARY_DIR}/include/llvm/Config/AsmPrinters.def
-  )
-
-# Produce llvm/Config/AsmParsers.def
-configure_file(
-  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmParsers.def.in
-  ${LLVM_BINARY_DIR}/include/llvm/Config/AsmParsers.def
-  )
-
-# Produce llvm/Config/Disassemblers.def
-configure_file(
-  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Disassemblers.def.in
-  ${LLVM_BINARY_DIR}/include/llvm/Config/Disassemblers.def
-  )
+endforeach()
-- 
2.34.1