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Use a C++ compiler for the atomic builtin check since we'll

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be using a C++ compiler to build.

Patch by Török Edwin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109646 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2010-07-28 20:26:34 +00:00
parent 138aa2a82b
commit 475b3d3856
1 changed files with 4 additions and 0 deletions
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4
autoconf/configure.ac
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@ -1355,6 +1355,9 @@ fi
dnl atomic builtins are required for threading support.
AC_MSG_CHECKING(for GCC atomic builtins)
dnl Since we'll be using these atomic builtins in C++ files we should test
dnl the C++ compiler.
AC_LANG_PUSH([C++])
AC_LINK_IFELSE(
AC_LANG_SOURCE(
[[int main() {
@ -1366,6 +1369,7 @@ AC_LINK_IFELSE(
return 0;
}
]]),
AC_LANG_POP([C++])
AC_MSG_RESULT(yes)
AC_DEFINE(LLVM_MULTITHREADED, 1, Build multithreading support into LLVM),
AC_MSG_RESULT(no)