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Emit nicer error messages when the user didn't set LLVM_REV and autodetection

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didn't find a suitable revision or when the LLVM revision in use is too old.
This commit is contained in:
Frits van Bommel
2009-06-03 16:09:48 +02:00
parent 6c3afda318
commit 5a6e2f1c8f
1 changed files with 8 additions and 2 deletions
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10
revisions.pl.in
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@@ -62,13 +62,19 @@ if ($old ne $out) {
}
# Allow the user to manually define it on the command line...
$out = qq!#ifndef LLVM_REV
$out = qq@#ifndef LLVM_REV
// LLVM svn revision number, used to adapt to changes in LLVM
// (Is 0 if LLVM is not an SVN trunk version)
#define LLVM_REV $llvm_rev_nr
#endif // LLVM_REV\n!;
#endif // LLVM_REV
#if !LLVM_REV
#error "You need to add '-DLLVM_REV=<your-llvm-rev>' to CMAKE_CXX_FLAGS in the cmake configuration"
#elif LLVM_REV < 67588
#error "Please update to a more recent LLVM version"
#endif\n@;
$old = "";
open $revh, "llvm-version.h" and $old = join "", <$revh>;