From 588a8694c6540e31140c7e242bfb5e279d6ca08c Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Fri, 19 May 2017 00:22:57 -0700 Subject: [PATCH] llvm: allow env override of exe and libdir path When using a native llvm-config from inside a sysroot, we need llvm-config to return the libraries, include directories, etc. from inside the sysroot rather than from the native sysroot. Thus provide an env override for calling llvm-config from a target sysroot. Upstream-Status: Inappropriate [OE-specific] Signed-off-by: Martin Kelly Signed-off-by: Khem Raj --- llvm/tools/llvm-config/llvm-config.cpp | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/llvm/tools/llvm-config/llvm-config.cpp b/llvm/tools/llvm-config/llvm-config.cpp index e86eb2b44b10..7b2abf318dbe 100644 --- a/llvm/tools/llvm-config/llvm-config.cpp +++ b/llvm/tools/llvm-config/llvm-config.cpp @@ -246,6 +246,13 @@ Typical components:\n\ /// Compute the path to the main executable. std::string GetExecutablePath(const char *Argv0) { + // Hack for Yocto: we need to override the root path when we are using + // llvm-config from within a target sysroot. + const char *Sysroot = std::getenv("YOCTO_ALTERNATE_EXE_PATH"); + if (Sysroot != nullptr) { + return Sysroot; + } + // This just needs to be some symbol in the binary; C++ doesn't // allow taking the address of ::main however. void *P = (void *)(intptr_t)GetExecutablePath;