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autoconf: restore old clang-srcdir behavior

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Keep the string empty when unspecified. Undoes
part of r149563.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149568 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dylan Noblesmith 2012-02-02 00:17:33 +00:00
parent 63c0951999
commit db6caea4f8
1 changed files with 4 additions and 1 deletions
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5
autoconf/configure.ac
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@ -813,7 +813,7 @@ AC_ARG_WITH(clang-srcdir,
[Directory to the out-of-tree Clang source]),,
withval="-")
case "$withval" in
-) clang_src_root="$ac_pwd/tools/clang" ;;
-) clang_src_root="" ;;
/* | [[A-Za-z]]:[[\\/]]*) clang_src_root="$withval" ;;
*) clang_src_root="$ac_pwd/$withval" ;;
esac
@ -1588,6 +1588,9 @@ dnl Configure doxygen's configuration file
AC_CONFIG_FILES([docs/doxygen.cfg])
dnl Configure clang, if present
if test ${clang_src_root} = ""; then
clang_src_root="$ac_pwd/tools/clang"
fi
if test -f ${clang_src_root}/README.txt; then
AC_CONFIG_HEADERS([${clang_src_root}/include/clang/Config/config.h])
AC_CONFIG_FILES([${clang_src_root}/docs/doxygen.cfg])