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Diffstat (limited to 'autoconf/configure.ac')
| -rw-r--r-- | autoconf/configure.ac | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index b41b6848..2fd162f2 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -181,6 +181,163 @@ AC_MSG_RESULT([$llvm_build_mode]) AC_SUBST(LLVM_BUILD_MODE,$llvm_build_mode) dnl ************************************************************************** +dnl Detect a LLVM Bitcode compiler for building KLEE runtime library + +dnl Check for clang built with llvm build +AC_MSG_CHECKING([LLVM Bitcode compiler]) +klee_llvm_bc_c_compiler="" +klee_llvm_bc_cxx_compiler="" + +AC_ARG_WITH([llvmcc], + AS_HELP_STRING([--with-llvmcc], + [Set the path to the C LLVM bitcode compiler to use (Default: auto-detect). If set, --with-llvmcxx= must be set too.] + ), + [], + [with_llvmcc=none] + ) + +AC_ARG_WITH([llvmcxx], + AS_HELP_STRING([--with-llvmcxx], + [Set the path to the C++ LLVM bitcode compiler to use (Default: auto-detect). If set, --with-llvmcc= must be set too.] + ), + [], + [with_llvmcxx=none] + ) +if test \( "X$with_llvmcc" != Xnone -a "X$with_llvmcxx" = Xnone \) -o \( "X$with_llvmcxx" != Xnone -a "X$with_llvmcc" = Xnone \) ; then + AC_MSG_ERROR([You must set both --with-llvmcc= and --with-llvmcxx= or set neither]) +fi + +if test X$with_llvmcc = Xnone ; then + dnl Try to automatically find compiler + + dnl Try Clang inside the LLVM build + if test -x "$llvm_obj/$llvm_build_mode/bin/clang" ; then + AC_MSG_RESULT([Found clang in LLVM Build]) + klee_llvm_bc_c_compiler="$llvm_obj/$llvm_build_mode/bin/clang" + + if test -x "$llvm_obj/$llvm_build_mode/bin/clang++" ; then + klee_llvm_bc_cxx_compiler="$llvm_obj/$llvm_build_mode/bin/clang++" + else + AC_MSG_ERROR([Found clang but could not find clang++]) + fi + fi + + dnl Try llvm-gcc in PATH + if test "X${klee_llvm_bc_c_compiler}" = X ; then + AC_MSG_RESULT([]) # Force a new line + AC_CHECK_PROG(llvm_gcc,llvm-gcc,FOUND,NOT_FOUND) + if test ${llvm_gcc} = FOUND ; then + klee_llvm_bc_c_compiler=`which llvm-gcc` + + AC_CHECK_PROG(llvm_gxx,llvm-g++,FOUND,NOT_FOUND) + if test ${llvm_gxx} = FOUND; then + klee_llvm_bc_cxx_compiler=`which llvm-g++` + else + AC_MSG_ERROR([Found llvm-gcc but could not find llvm-g++ in PATH]) + fi + fi + + fi + + dnl Try clang in PATH + if test "X${klee_llvm_bc_c_compiler}" = X ; then + AC_MSG_RESULT([]) # Force a new line + AC_CHECK_PROG(clang,clang,FOUND,NOT_FOUND) + if test ${clang} = FOUND ; then + klee_llvm_bc_c_compiler=`which clang` + + AC_CHECK_PROG(clang_cxx,clang++,FOUND,NOT_FOUND) + if test ${clang_cxx} = FOUND; then + klee_llvm_bc_cxx_compiler=`which clang++` + else + AC_MSG_ERROR([Found clang but could not find clang++ in PATH]) + fi + fi + + fi + + if test X"${klee_llvm_bc_c_compiler}" = X ; then + AC_MSG_ERROR([Could not find a C LLVM Bitcode compiler. Did you try building Clang in the LLVM Build directory or putting llvm-gcc or clang in your path?]) + fi + + if test X"${klee_llvm_bc_cxx_compiler}" = X ; then + AC_MSG_ERROR([Could not find a C++ LLVM Bitcode compiler. Did you try building Clang in the LLVM Build directory or putting llvm-gcc or clang in your path?]) + fi + +else + dnl Use user supplied values + klee_llvm_bc_c_compiler="$with_llvmcc" + klee_llvm_bc_cxx_compiler="$with_llvmcxx" + + if test \! -x "${klee_llvm_bc_c_compiler}"; then + AC_MSG_ERROR([--with-llvmcc= supplied compiler does not exist]) + fi + + if test \! -x "${klee_llvm_bc_cxx_compiler}"; then + AC_MSG_ERROR([--with-llvmcxx= supplied compiler does not exist]) + fi + AC_MSG_RESULT([Using user supplied LLVM bitcode compilers.]) +fi + +dnl Tell the user what we are going to try and use +AC_MSG_RESULT([Using C llvm compiler : $klee_llvm_bc_c_compiler]) +AC_MSG_RESULT([Using C++ llvm compiler : $klee_llvm_bc_cxx_compiler]) + +dnl Test that the bitcode compiler works + +dnl Function for checking bitcode compiler works +dnl $1 : compiler to invoke +dnl $2 : source code extension (e.g. cpp or c) +dnl $3 : Compiler string (e.g. CXX or C) +function klee_check_bc() +{ + AC_MSG_CHECKING([${3} LLVM Bitcode compiler works]) + dnl FIXME: write to tmp directory instead of binary build dir + klee_bc_test_file="./.klee_llvm_bitcode_test.${2}" + + echo "int main() { return 0;}" > "${klee_bc_test_file}" + "${1}" -emit-llvm -c "${klee_bc_test_file}" -o "${klee_bc_test_file}.bc" + if test $? -ne 0 ; then + AC_MSG_ERROR([Failed running ${3} LLVM Bitcode compiler]) + fi + + if test \! -e "${klee_bc_test_file}.bc"; then + AC_MSG_ERROR([ ${3} LLVM Bitcode compiler did not produce any output]) + fi + + dnl Convert bitcode to human readable form as a hacky check + dnl that the version of LLVM we are configuring with can + dnl parse the LLVM bitcode produced by the detected compiler + if test -x "$llvm_obj/$llvm_build_mode/bin/llvm-dis" ; then + "$llvm_obj/$llvm_build_mode/bin/llvm-dis" -o "${klee_bc_test_file}.ll" "${klee_bc_test_file}.bc" + + if test $? -ne 0; then + AC_MSG_ERROR([Failed converting LLVM Bitcode to LLVM assembly. Maybe your LLVM versions do not match?]) + fi + + if test -e "${klee_bc_test_file}.ll" ; then + AC_MSG_RESULT([Success]) + rm "${klee_bc_test_file}" "${klee_bc_test_file}.bc" "${klee_bc_test_file}.ll" + else + rm "${klee_bc_test_file}" "${klee_bc_test_file}.bc" "${klee_bc_test_file}.ll" + AC_MSG_ERROR([Failed converting LLVM Bitcode to LLVM assembly. Maybe your LLVM versions do not match?]) + fi + + else + rm "${klee_bc_test_file}" "${klee_bc_test_file}.bc" + AC_MSG_ERROR([Could not find llvm-dis]) + fi +} + +dnl Invoke previously defined function to check the LLVM bitcode compilers +klee_check_bc "${klee_llvm_bc_c_compiler}" "c" "C" +klee_check_bc "${klee_llvm_bc_cxx_compiler}" "cpp" "CXX" + +dnl Set variable for Makefile.config +AC_SUBST(KLEE_BITCODE_C_COMPILER,$klee_llvm_bc_c_compiler) +AC_SUBST(KLEE_BITCODE_CXX_COMPILER,$klee_llvm_bc_cxx_compiler) + +dnl ************************************************************************** dnl User option to enable uClibc support. AC_ARG_WITH(uclibc, |