[PATCH 0/3] BaseTools: allow users to override CC and CXX on the make command line

["Rebecca Cran" <quic_rcran@quicinc.com>]

Currently, the BaseTools Makefiles use BUILD_CC and BUILD_CXX, which
doesn't allow users to override the compiler to use in the expected way
by running e.g. "make CC=clang-17 CXX=clang++-17". clang/llvm support
was added in https://bugzilla.tianocore.org/show_bug.cgi?id=2842 in a
way that required users to run "make CXX=llvm" and have clang and clang++
executables under $(CLANG_BIN). As far as I know this isn't a standard
way of telling a build system to use clang, and so is likely difficult
to discover by users.

This patch series fixes that, and as a side effect allows the clang
analyzer to run via "scan-build make".

Since clang 17 defaults to C++17 or newer where the 'register' keyword
is deprecated and the warning turned into an error, override the
version used when building C++ code via "-std=c++14".

Rebecca Cran (3):
  BaseTools: Allow users to specify compiler to use with make CC= CXX=
  BaseTools: Improve detection of users wanting to build using clang
  BaseTools: Build against C++14 when building with clang

 BaseTools/Source/C/DevicePath/GNUmakefile          |  7 ++-
 BaseTools/Source/C/LzmaCompress/GNUmakefile        |  2 +-
 BaseTools/Source/C/Makefiles/app.makefile          |  2 +-
 BaseTools/Source/C/Makefiles/footer.makefile       |  6 +-
 BaseTools/Source/C/Makefiles/header.makefile       | 59 ++++++++++----------
 BaseTools/Source/C/VfrCompile/GNUmakefile          | 19 ++++---
 BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile | 20 +++----
 BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile   | 31 +++++-----
 BaseTools/Source/Python/Workspace/DscBuildData.py  |  2 +-
 9 files changed, 76 insertions(+), 72 deletions(-)

-- 
2.30.2