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- From 8f8e25be1822d93341b0e32ba42d22c8c54016d4 Mon Sep 17 00:00:00 2001
- From: Martin Kelly <mkelly@xevo.com>
- 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.
- Add YOCTO_ALTERNATE_LIBDIR and YOCTO_ALTERNATE_EXE_PATH env variables
- Upstream-Status: Inappropriate [OE-specific]
- Signed-off-by: Martin Kelly <mkelly@xevo.com>
- Signed-off-by: Khem Raj <raj.khem@gmail.com>
- ---
- 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 b1d795a0a349..dbeddeb2152e 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;
- @@ -325,7 +332,7 @@ int main(int argc, char **argv) {
- // Compute various directory locations based on the derived location
- // information.
- std::string ActivePrefix, ActiveBinDir, ActiveIncludeDir, ActiveLibDir,
- - ActiveCMakeDir;
- + ActiveCMakeDir, BaseLibDir;
- std::string ActiveIncludeOption;
- if (IsInDevelopmentTree) {
- ActiveIncludeDir = std::string(LLVM_SRC_ROOT) + "/include";
- @@ -366,12 +373,18 @@ int main(int argc, char **argv) {
- sys::fs::make_absolute(ActivePrefix, Path);
- ActiveBinDir = std::string(Path.str());
- }
- - ActiveLibDir = ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX;
- - {
- - SmallString<256> Path(LLVM_INSTALL_PACKAGE_DIR);
- - sys::fs::make_absolute(ActivePrefix, Path);
- - ActiveCMakeDir = std::string(Path.str());
- + // Hack for Yocto: we need to override the lib path when we are using
- + // llvm-config from within a target sysroot since LLVM_LIBDIR_SUFFIX
- + // maybe different for host llvm vs target e.g. ppc64 Libdir=lib64 but
- + // x86_64 Libdir = lib
- + const char *YoctoLibDir = std::getenv("YOCTO_ALTERNATE_LIBDIR");
- + if (YoctoLibDir != nullptr) {
- + BaseLibDir = std::string(YoctoLibDir);
- + } else {
- + BaseLibDir = std::string("/lib") + LLVM_LIBDIR_SUFFIX;
- }
- + ActiveLibDir = ActivePrefix + BaseLibDir;
- + ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
- ActiveIncludeOption = "-I" + ActiveIncludeDir;
- }
-
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