dnl Initialize autoconf
AC_INIT([[[LLVM]]],[[[1.1]]],[llvmbugs@cs.uiuc.edu])

dnl Place all of the extra autoconf files into the config subdirectory
AC_CONFIG_AUX_DIR([autoconf])

dnl Quit if the source directory has already been configured.
dnl NOTE: This relies upon undocumented autoconf behavior.
if test ${srcdir} != "."
then
	if test -f ${srcdir}/include/Config/config.h
	then
		AC_MSG_ERROR([Already configured in ${srcdir}])
	fi
fi

dnl Configure all of the projects present in our source tree.
for i in `ls ${srcdir}/projects`
do
  if test ${i} != "CVS"
  then
    if test -f ${srcdir}/projects/${i}/configure
    then
      AC_CONFIG_SUBDIRS(projects/${i})
    fi
  fi
done

dnl Configure a header file
AC_CONFIG_HEADERS(include/Config/config.h)
AC_CONFIG_MAKEFILE(Makefile)
AC_CONFIG_MAKEFILE(Makefile.common)
AC_CONFIG_MAKEFILE(lib/Makefile)
AC_CONFIG_MAKEFILE(runtime/Makefile)
AC_CONFIG_MAKEFILE(test/Makefile)
AC_CONFIG_MAKEFILE(test/Makefile.tests)
AC_CONFIG_MAKEFILE(test/QMTest/llvm.py)
AC_CONFIG_MAKEFILE(test/QMTest/llvmdb.py)
AC_CONFIG_MAKEFILE(test/Programs/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/Makefile.programs)
AC_CONFIG_MAKEFILE(test/Programs/TEST.aa.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.dsgraph.report)
AC_CONFIG_MAKEFILE(test/Programs/TEST.micro.report)
AC_CONFIG_MAKEFILE(test/Programs/TEST.aa.report)
AC_CONFIG_MAKEFILE(test/Programs/TEST.example.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.nightly.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.buildrepo.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.jit.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.nightly.report)
AC_CONFIG_MAKEFILE(test/Programs/TEST.dsgraph.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.jit.report)
AC_CONFIG_MAKEFILE(test/Programs/TEST.typesafe.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/TEST.dsgraph.gnuplot)
AC_CONFIG_MAKEFILE(test/Programs/TEST.micro.Makefile)
AC_CONFIG_MAKEFILE(test/Programs/External/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/External/SPEC/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/External/SPEC/Makefile.spec)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Makefile.multisrc)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/analyzer/test.in)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/distray/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/distray/test.in)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/fourinarow/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/fourinarow/test.in)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/mason/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/mason/test.in)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/neural/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/neural/test.in)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/pcompress2/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/pcompress2/test.in)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/pifft/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/MultiSource/Benchmarks/FreeBench/pifft/test.in)
AC_CONFIG_MAKEFILE(test/Programs/SingleSource/Makefile)
AC_CONFIG_MAKEFILE(test/Programs/SingleSource/Makefile.singlesrc)
AC_CONFIG_MAKEFILE(tools/Makefile)
AC_CONFIG_MAKEFILE(utils/Makefile)
AC_CONFIG_MAKEFILE(projects/Makefile)

dnl Find the install program (needs to be done before canonical stuff)
AC_PROG_INSTALL

dnl Check which host for which we're compiling.  This will tell us which LLVM
dnl compiler will be used for compiling SSA into object code.
AC_CANONICAL_TARGET

dnl Set the "OS" Makefile variable based on the system we are building on.
dnl We will use the build machine information to set some variables.
case $build in
	*-*-linux*)
             AC_SUBST(OS,[Linux])
			 if test -d /home/vadve/lattner/local/x86/llvm-gcc
			 then
			   AC_SUBST(LLVMGCCDIR,[/home/vadve/lattner/local/x86/llvm-gcc/])
			 fi
	         ;;

	*-*-solaris*)
             AC_SUBST(OS,[SunOS])
			 if test -d /home/vadve/lattner/local/sparc/llvm-gcc
			 then
	           AC_SUBST(LLVMGCCDIR,[/home/vadve/lattner/local/sparc/llvm-gcc/])
			 fi
	         ;;

	*-*-darwin*)
             AC_SUBST(OS,[Darwin])
	         ;;

	*)       AC_SUBST(OS,[Unknown])
	         ;;
esac

dnl If we are targetting a Sparc machine running Solaris, pretend that it is
dnl V9, since that is all that we support at the moment, and autoconf will only
dnl tell us we're a sparc.
case $target in
	sparc*-*-solaris*)  AC_SUBST(target,[[sparcv9-sun-solaris2.8]])
	                    ;;
esac

dnl Determine what our target architecture is and configure accordingly.
dnl This will allow Makefiles to make a distinction between the hardware and
dnl the OS.
case $target in
	i*86-*)           AC_SUBST(ARCH,[x86])
	                  ;;
	sparc*-*)         AC_SUBST(ARCH,[Sparc])
	                  ;;
	powerpc*-*)       AC_SUBST(ARCH,[PowerPC])
	                  ;;
	*)                AC_SUBST(ARCH,[Unknown])
	                  ;;
esac

dnl Check for compilation tools
AC_PROG_CXX
AC_PROG_CC(gcc)
AC_PROG_CPP

dnl Ensure that compilation tools are GCC; we use GCC specific extensions
if test "$GCC" != "yes"
then
	AC_MSG_ERROR([gcc required but not found])
fi
if test "$GXX" != "yes"
then
	AC_MSG_ERROR([g++ required but not found])
fi

dnl Verify that GCC is version 3.0 or higher
gccmajor=`$CC --version | head -n 1 | awk '{print $NF;}' | cut -d. -f1`
if test "$gccmajor" -lt "3"
then
	AC_MSG_ERROR([gcc 3.x required, but you have a lower version])
fi

dnl Check for GNU Make.  We use its extensions too, so don't build without it
CHECK_GNU_MAKE
if test -z "$_cv_gnu_make_command"
then
	AC_MSG_ERROR([GNU Make required but not found])
fi

dnl Checks for other tools
AC_PROG_FLEX
AC_PROG_BISON
AC_PROG_LIBTOOL

dnl Checks for tools we can get away with not having:
AC_PATH_PROG(DOT,[dot],[true dot])
AC_PATH_PROG(ETAGS,[etags],[true etags])
dnl Check if we know how to tell etags we are using C++:
etags_version=`$ETAGS --version 2>&1`
case "$etags_version" in
	*[Ee]xuberant*) ETAGSFLAGS="--language-force=c++" ;;
	*GNU\ Emacs*) ETAGSFLAGS="-l c++" ;;
	*) ETAGSFLAGS="" ;;
esac
AC_SUBST(ETAGSFLAGS,$ETAGSFLAGS)
AC_PATH_PROG(PYTHON,[python],[true python])
if test "$PYTHON" = "false"
then
	AC_MSG_WARN([Python is required for the test suite, but it was not found])
fi
AC_PATH_PROG(QMTEST,[qmtest],[true qmtest])
if test "$QMTEST" = "false"
then
	AC_MSG_WARN([QMTest is required for the test suite, but it was not found])
fi

dnl Verify that the version of python available is high enough for qmtest
pyversion=`$PYTHON -V 2>&1 | cut -d\  -f2`
pymajor=`echo $pyversion | cut -d. -f1`
pyminor=`echo $pyversion | cut -d. -f2`

if test "$pymajor" -ge "2"
then
	if test "$pymajor" -eq "2"
	then
		if test "$pyminor" -lt "2"
		then
			AC_MSG_WARN([QMTest requires Python 2.2 or later])
		fi
	fi
else
	AC_MSG_WARN([QMTest requires Python 2.2 or later])
fi

dnl Verify that the source directory is valid
AC_CONFIG_SRCDIR(["Makefile.config.in"])

dnl Checks for libraries:
dnl libelf is for sparc only; we can ignore it if we don't have it
AC_CHECK_LIB(elf, elf_begin)

dnl dlopen() is required for plugin support.
AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],[Define if dlopen() is available on this platform.]),AC_MSG_WARN([dlopen() not found - disabling plugin support]))

dnl mallinfo is optional; the code can compile (minus features) without it
AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],[Define if mallinfo() is available on this platform.]))

dnl pthread locking functions are optional - but llvm will not be thread-safe
dnl without locks.
AC_SEARCH_LIBS(pthread_mutex_lock,pthread,AC_DEFINE(HAVE_PTHREAD_MUTEX_LOCK,1,[Define if PThread mutexes (e.g., pthread_mutex_lock) are available in the system's thread library.]))

dnl Checks for header files.
dnl We don't check for ancient stuff or things that are guaranteed to be there
dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT

dnl Checks for POSIX and other various system-specific header files
AC_CHECK_HEADERS(fcntl.h limits.h sys/time.h unistd.h malloc.h sys/mman.h sys/resource.h dlfcn.h link.h)

dnl Check for types
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
AC_CHECK_TYPES([uint64_t],,AC_MSG_ERROR([Type uint64_t required but not found]))
AC_HEADER_TIME
AC_STRUCT_TM

dnl Check for various C features
AC_C_PRINTF_A

dnl Check for C++ extensions
AC_CXX_HAVE_HASH_MAP
AC_CXX_HAVE_HASH_SET
AC_CXX_HAVE_EXT_SLIST
AC_CXX_HAVE_STD_ITERATOR
AC_CXX_HAVE_BI_ITERATOR
AC_CXX_HAVE_FWD_ITERATOR

dnl Checks for library functions.
AC_FUNC_ALLOCA
AC_FUNC_MMAP
if test "$ac_cv_func_mmap_fixed_mapped" = "no"
then
	AC_MSG_ERROR([mmap() required but not found])
fi
AC_FUNC_MMAP_FILE
if test "$ac_cv_func_mmap_file" = "no"
then
	AC_MSG_ERROR([mmap() of files required but not found])
fi
AC_HEADER_MMAP_ANONYMOUS
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(getcwd gettimeofday strdup strtoq strtoll)
AC_CHECK_FUNC(mprotect,,AC_MSG_ERROR([Function mprotect() required but not found]))

dnl Determine if the linker supports the -R option.
AC_LINK_USE_R

dnl --enable/--with command-line options:
dnl Check whether they want to do an optimized build:
AC_ARG_ENABLE(optimized,AC_HELP_STRING([--enable-optimized],[Compile with optimizations enabled (default is NO)]),,enableval=no)
if test ${enableval} = "no"
then
	AC_SUBST(ENABLE_OPTIMIZED,[[]])
else
	AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
fi

dnl Spec Benchmarks
AC_ARG_ENABLE(spec2000,AC_HELP_STRING([--enable-spec2000],[Compile SPEC 2000 benchmarks (default is NO)]),,enableval=no)
if test ${enableval} = "no"
then
	if test -d /home/vadve/shared/benchmarks/speccpu2000/benchspec
	then
		AC_SUBST(SPEC_ROOT,[/home/vadve/shared/benchmarks/speccpu2000/benchspec])
		AC_SUBST(USE_SPEC,[[USE_SPEC=1]])
	else
		AC_SUBST(USE_SPEC,[[]])
		AC_SUBST(SPEC_ROOT,[])
	fi
else
	if test ${enableval} = ""
	then
		AC_SUBST(SPEC_ROOT,[/home/vadve/shared/benchmarks/speccpu2000/benchspec])
	else
		AC_SUBST(SPEC_ROOT,[${enableval}])
	fi
	AC_SUBST(USE_SPEC,[[USE_SPEC=1]])
fi

dnl Precompiled Bytecode Option
AC_ARG_ENABLE(precompiled_bytecode,AC_HELP_STRING([--enable-precompiled_bytecode],[Use pre-compiled bytecode (default is NO)]),,enableval=no)
if test ${enableval} = "no"
then
	AC_SUBST(UPB,[[]])
else
	AC_SUBST(UPB,[[USE_PRECOMPILED_BYTECODE=1]])
fi

dnl LLC Diff Option
AC_ARG_ENABLE(llc_diffs,AC_HELP_STRING([--enable-llc_diffs],[Enable LLC Diffs when testing (default is YES)]),,enableval=yes)
if test ${enableval} = "no"
then
	AC_SUBST(DISABLE_LLC_DIFFS,[DISABLE_LLC_DIFFS:=1])
else
	AC_SUBST(DISABLE_LLC_DIFFS,[[]])
fi

dnl JIT Option
AC_ARG_ENABLE(jit,AC_HELP_STRING([--enable-jit],[Enable Just In Time Compiling (default is YES)]),,enableval=default)
if test ${enableval} = "no"
then
	AC_SUBST(JIT,[[]])
else
	case $target in
		*i*86*)
			AC_SUBST(JIT,[[TARGET_HAS_JIT=1]])
			;;
		*sparc*)
			AC_SUBST(JIT,[[TARGET_HAS_JIT=1]])
			;;
		*)
			AC_SUBST(JIT,[[]])
			;;
	esac
fi

dnl Find the LLVM GCC-based C/C++ front end
AC_ARG_WITH(llvmgccdir,AC_HELP_STRING([--with-llvmgccdir],[Location of LLVM GCC front-end]),AC_SUBST(LLVMGCCDIR,[$withval]))
AC_MSG_CHECKING([for llvm-gcc])
LLVM_GCC_CHECK=no
if test -d "$LLVMGCCDIR"
then
	if test -x "$LLVMGCCDIR/bin/gcc"
	then
		LLVM_GCC_CHECK="$LLVMGCCDIR/bin/gcc"
	fi
fi
llvmgccwarn=no
AC_MSG_RESULT($LLVM_GCC_CHECK)
if test "$LLVM_GCC_CHECK" = "no"
then
    llvmgccwarn=yes
fi
AC_MSG_CHECKING([whether llvm-gcc is sane])
LLVM_GCC_SANE=no
if test -x "$LLVM_GCC_CHECK"
then
	cp /dev/null conftest.c
    "$LLVM_GCC_CHECK" -S -o - conftest.c | grep implementation > /dev/null 2>&1
	if test $? -eq 0
	then
		LLVM_GCC_SANE=yes
	fi
	rm conftest.c
	llvmcc1path=`"$LLVM_GCC_CHECK" --print-prog-name=cc1`
	AC_SUBST(LLVMCC1,$llvmcc1path)
	llvmcc1pluspath=`"$LLVM_GCC_CHECK" --print-prog-name=cc1plus`
	AC_SUBST(LLVMCC1PLUS,$llvmcc1pluspath)
fi
AC_MSG_RESULT($LLVM_GCC_SANE)
if test "$LLVM_GCC_SANE" = "no"
then
	llvmgccwarn=yes
fi

dnl Location of the bytecode repository
AC_ARG_WITH(bcrepos,AC_HELP_STRING([--with-bcrepos],[Location of Bytecode Repository]),AC_SUBST(BCR,[$withval]),AC_SUBST(BCR,[/home/vadve/lattner/LLVMPrograms]))

dnl Location of PAPI
AC_ARG_WITH(papi,AC_HELP_STRING([--with-papi],[Location of PAPI]),AC_SUBST(PAPIDIR,[$withval]),AC_SUBST(PAPIDIR,[/home/vadve/shared/Sparc/papi-2.3.4.1]))

dnl Get libtool's idea of what the shared library suffix is.
dnl (This is a hack; it relies on undocumented behavior.)
AC_MSG_CHECKING([for shared library suffix])
eval "SHLIBEXT=$shrext"
AC_MSG_RESULT($SHLIBEXT)
dnl Propagate it to the Makefiles and config.h (for gccld & bugpoint).
AC_SUBST(SHLIBEXT,$SHLIBEXT)
AC_DEFINE_UNQUOTED(SHLIBEXT,"$SHLIBEXT",
                   [Extension that shared libraries have, e.g., ".so".])

dnl Create the output files
AC_OUTPUT(Makefile.config)

dnl Warn loudly if llvm-gcc was not obviously working
if test $llvmgccwarn = yes
then
	AC_MSG_WARN([***** llvm C/C++ front end was not found, or does not])
	AC_MSG_WARN([***** appear to be working.])
	AC_MSG_WARN([***** ])
	AC_MSG_WARN([***** Please check configure's --with-llvmgccdir option.])
	AC_MSG_WARN([***** Runtime libraries (in llvm/runtime) will not be built,])
	AC_MSG_WARN([***** but you should be able to build the llvm tools.])
fi