diff options
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 762c41e1cc..9e8cdfc226 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -612,6 +612,56 @@ if test -n "$LLVMGXX" && test -z "$LLVMGCC"; then AC_MSG_ERROR([Invalid llvm-gcc. Use --with-llvmgcc when --with-llvmgxx is used]); fi +dnl Allow a specific Clang compiler to be used with this LLVM config. +AC_ARG_WITH(clang, + AS_HELP_STRING([--with-clang], + [Specify location of clang compiler (default is --with-built-clang)]), + [],[with_clang=default]) + +dnl Enable use of the built Clang. +AC_ARG_WITH(built-clang, + AS_HELP_STRING([--with-built-clang], + [Use the compiled Clang as the LLVM compiler (default=check)]), + [],[with_built_clang=check]) + +dnl Select the Clang compiler option. +dnl +dnl If --with-clang is given, always honor that; otherwise honor +dnl --with-built-clang, or check if we have the clang sources. +AC_MSG_CHECKING([clang compiler]) +WITH_CLANGPATH="" +WITH_BUILT_CLANG=0 +if test "$with_clang" != "default"; then + WITH_CLANGPATH="$with_clang" + if ! test -x "$WITH_CLANGPATH"; then + AC_MSG_ERROR([invalid --with-clang, path does not specify an executable]) + fi +elif test "$with_built_clang" = "yes"; then + WITH_BUILT_CLANG=1 +elif test "$with_built_clang" = "no"; then + WITH_BUILT_CLANG=0 +else + if test "$with_built_clang" != "check"; then + AC_MSG_ERROR([invalid value for --with-built-clang.]) + fi + + if test -f ${srcdir}/tools/clang/README.txt; then + WITH_BUILT_CLANG=1 + fi +fi + +if ! test -z "$WITH_CLANGPATH"; then + AC_MSG_RESULT([$WITH_CLANGPATH]) + WITH_CLANGXXPATH=`"$WITH_CLANGPATH" --print-prog-name=clang++` +elif test "$WITH_BUILT_CLANG" = "1"; then + AC_MSG_RESULT([built]) +else + AC_MSG_RESULT([none]) +fi +AC_SUBST(CLANGPATH,$WITH_CLANGPATH) +AC_SUBST(CLANGXXPATH,$WITH_CLANGXXPATH) +AC_SUBST(ENABLE_BUILT_CLANG,$WITH_BUILT_CLANG) + dnl Override the option to use for optimized builds. AC_ARG_WITH(optimize-option, AS_HELP_STRING([--with-optimize-option], @@ -946,6 +996,29 @@ else AC_SUBST(LLVMGXXCOMMAND,$LLVMGXXCOMMAND) fi +dnl Select the LLVM capable compiler to use, we default to using llvm-gcc if +dnl found, otherwise clang if available. +AC_ARG_WITH(llvmcc, + AS_HELP_STRING([--with-llvmcc=<name>], + [Choose the LLVM capable compiler to use (llvm-gcc, clang, or none; default=check)]), + [],[with_llvmcc=check]) +AC_MSG_CHECKING([LLVM capable compiler]) +if test "$with_llvmcc" != "check"; then + if (test "$with_llvmcc" != "llvm-gcc" && + test "$with_llvmcc" != "clang" && + test "$with_llvmcc" != "none"); then + AC_MSG_ERROR([invalid value for --with-llvmcc, expected 'llvm-gcc', 'clang', or 'none'.]) + fi + WITH_LLVMCC="$with_llvmcc" +elif test -n "$LLVMGCC"; then + WITH_LLVMCC=llvm-gcc +elif test -n "$WITH_CLANGPATH" || test "$WITH_BUILT_CLANG" -ne "0"; then + WITH_LLVMCC=clang +else + WITH_LLVMCC=none +fi +AC_MSG_RESULT([$WITH_LLVMCC]) +AC_SUBST(LLVMCC_OPTION,$WITH_LLVMCC) AC_MSG_CHECKING([tool compatibility]) |