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configure: Improve libLLVM related; add default flags.

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This commit is contained in:
Jason Volk 2020-02-21 14:41:34 -08:00
parent f2ff0f170d
commit 972830e188
1 changed files with 9 additions and 5 deletions
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14
configure.ac
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@ -1936,21 +1936,25 @@ AC_ARG_WITH(llvm-includes,
AC_HELP_STRING([--with-llvm-includes=[[[DIR]]]], [Path to libllvm include directory]),
[
LLVM_CPPFLAGS="-isystem $withval"
], [])
], [
LLVM_CPPFLAGS="-isystem /usr/include/llvm-9"
])
AC_ARG_WITH(llvm-libs,
AC_HELP_STRING([--with-llvm-libs=[[[DIR]]]], [Path to libllvm library directory]),
[
LLVM_LDFLAGS="-L$withval"
], [])
], [
LLVM_LDFLAGS="-L/usr/lib/llvm-9/lib"
])
AC_CHECK_LIB([LLVM-9], [LLVMBuildAnd],
AC_CHECK_LIB([LLVM], [LLVMBuildAnd],
[
have_libllvm="yes"
LLVM_LIBS="-lLLVM-9"
LLVM_LIBS="-lLLVM"
], [
have_libllvm="no"
AC_MSG_WARN([Unable to find LLVM-9 compiler infrastructure library on this system.])
AC_MSG_WARN([Unable to find LLVM compiler infrastructure library on this system.])
])
AM_CONDITIONAL([LLVM], [test "x$have_libllvm" = "xyes" ])