https://llvm.org/bugs/show_bug.cgi?id=23677
Bug ID: 23677
Summary: chicken-and-egg problem building libc++ as the only
STL on a system
Product: Build scripts
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: cmake
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Trying to build libc++ and libc++abi for a system that doesn't have any STL
implementation installed before fails because of cmake's checks for a working
C++ compiler -- CMakeTestCXXCompiler.cmake tries to verify there's a working
C++ compiler by compiling a small application (and implicitly linking it to an
STL -- which isn't needed to build libc++abi/libc++).
The check for a working C++ compiler should probably be replaced with a simpler
check that doesn't require linking to a pre-existing
libc++/libstdc++/libc++abi/libsupc++.
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