Initial support for the CMake build system.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56419 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 102 insertions, 0 deletions

diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
new file mode 100644
index 0000000000..2d6898c2db
--- /dev/null
+++ b/tools/llvm-config/CMakeLists.txt
@@ -0,0 +1,102 @@
+include(TestBigEndian)
+
+if( NOT PERL_FOUND )
+  message(FATAL_ERROR "Perl required but not found!")
+endif( NOT PERL_FOUND )
+
+set(PERL ${PERL_EXECUTABLE})
+set(VERSION PACKAGE_VERSION)
+set(PREFIX ${LLVM_BINARY_DIR}) # TODO: Root for `make install'.
+execute_process(COMMAND date
+  OUTPUT_VARIABLE LLVM_CONFIGTIME
+  OUTPUT_STRIP_TRAILING_WHITESPACE)
+set(abs_top_srcdir ${LLVM_MAIN_SRC_DIR})
+set(abs_top_builddir ${LLVM_BINARY_DIR})
+# LLVM_ON_UNIX and LLVM_ON_WIN32 already set.
+# those are set to blank by `autoconf' on MinGW, so it seems they are not required:
+#set(LLVMGCCDIR "")
+#set(LLVMGCC "")
+#set(LLVMGXX "")
+#set(LLVMGCC_VERSION "")
+#set(LLVMGCC_MAJVERS "")
+test_big_endian(IS_BIG_ENDIAN)
+if( IS_BIG_ENDIAN )
+  set(ENDIAN "big")
+else( IS_BIG_ENDIAN )
+  set(ENDIAN "little")
+endif( IS_BIG_ENDIAN )
+set(SHLIBEXT ${LTDL_SHLIB_EXT})
+#EXEEXT already set.
+set(OS "${CMAKE_SYSTEM}")
+set(ARCH "X86") # TODO: This gives "i686" in Linux: "${CMAKE_SYSTEM_PROCESSOR}")
+# TODO: avoid using autoconf:
+set(config_guess ${LLVM_MAIN_SRC_DIR}/autoconf/config.guess)
+execute_process(COMMAND sh ${config_guess}
+  RESULT_VARIABLE TT_RV
+  OUTPUT_VARIABLE LLVM_TARGET_TRIPLET
+  OUTPUT_STRIP_TRAILING_WHITESPACE)
+message(STATUS "Target triplet: ${LLVM_TARGET_TRIPLET}")
+if( NOT TT_RV EQUAL 0 )
+  message(FATAL_ERROR "Failed to execute ${config_guess}")
+endif( NOT TT_RV EQUAL 0 )
+set(target ${LLVM_TARGET_TRIPLET})
+set(TARGETS_TO_BUILD "X86")  # TODO
+set(TARGET_HAS_JIT "1")  # TODO
+
+# Avoids replacement at config-time:
+set(LLVM_CPPFLAGS "@LLVM_CPPFLAGS@")
+set(LLVM_CFLAGS "@LLVM_CFLAGS@")
+set(LLVM_CXXFLAGS "@LLVM_CXXFLAGS@")
+set(LLVM_LDFLAGS "@LLVM_LDFLAGS@")
+set(LIBS "@LIBS@")
+set(LLVM_BUILDMODE "@LLVM_BUILDMODE@")
+
+configure_file(
+  ${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.in.in
+  ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in
+  @ONLY
+)
+
+set(LIBDEPS ${CMAKE_CURRENT_BINARY_DIR}/LibDeps.txt)
+set(LIBDEPS_TMP ${CMAKE_CURRENT_BINARY_DIR}/LibDeps.txt.tmp)
+set(FINAL_LIBDEPS ${CMAKE_CURRENT_BINARY_DIR}/FinalLibDeps.txt)
+set(LLVM_CONFIG ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/llvm-config)
+set(LLVM_CONFIG_IN ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in)
+
+# set(LIBDEPS LibDeps.txt)
+# set(LIBDEPS_TMP LibDeps.txt.tmp)
+# set(FINAL_LIBDEPS FinalLibDeps.txt)
+
+add_custom_command(OUTPUT ${LIBDEPS_TMP}
+  COMMAND ${PERL_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/GenLibDeps.pl -flat ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY} > ${LIBDEPS_TMP}
+  DEPENDS ${llvm_libs}
+  COMMENT "Regenerating ${LIBDEPS_TMP}")
+
+add_custom_command(OUTPUT ${LIBDEPS}
+  COMMAND cmp -s ${LIBDEPS_TMP} ${LIBDEPS} || \( cp ${LIBDEPS_TMP} ${LIBDEPS} && echo "Updated ${LIBDEPS} because dependencies changed" \)
+  DEPENDS ${LIBDEPS_TMP})
+
+add_custom_command(OUTPUT ${FINAL_LIBDEPS}
+  COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/find-cycles.pl < ${LIBDEPS} > ${FINAL_LIBDEPS} || rm -f ${FINAL_LIBDEPS}
+  DEPENDS ${LIBDEPS}
+  COMMENT "Checking for cyclic dependencies between LLVM libraries.")
+
+add_custom_command(OUTPUT ${LLVM_CONFIG}
+  COMMAND echo 's,@LLVM_CPPFLAGS@,${CMAKE_CPP_FLAGS},' > temp.sed
+  COMMAND echo 's,@LLVM_CFLAGS@,${CMAKE_C_FLAGS},' >> temp.sed
+  COMMAND echo 's,@LLVM_CXXFLAGS@,${CMAKE_CXX_FLAGS},' >> temp.sed
+  # TODO: Use general flags for linking, not just for shared libs:
+  COMMAND echo 's,@LLVM_LDFLAGS@,${CMAKE_SHARED_LINKER_FLAGS},' >> temp.sed
+  COMMAND echo 's,@LIBS@,,' >> temp.sed                    # TODO: System libs
+  COMMAND echo 's,@LLVM_BUILDMODE@,${CMAKE_BUILD_TYPE},' >> temp.sed
+  COMMAND sed -f temp.sed < ${LLVM_CONFIG_IN} > ${LLVM_CONFIG}
+  COMMAND rm temp.sed
+  COMMAND cat ${FINAL_LIBDEPS} >> ${LLVM_CONFIG}
+  COMMAND chmod +x ${LLVM_CONFIG}
+  COMMAND cd ${LLVM_BINARY_DIR} && ${CMAKE_COMMAND} -U HAVE_LLVM_CONFIG ${LLVM_MAIN_SRC_DIR}
+  DEPENDS ${FINAL_LIBDEPS} ${LLVM_CONFIG_IN}
+  COMMENT "Building llvm-config script."
+  )
+
+add_custom_target(llvm-config.target ALL
+  DEPENDS ${LLVM_CONFIG})
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