In https://bugzilla.tianocore.org/show_bug.cgi?id=2842 clang support was
added by having users specify "make CXX=llvm" when building BaseTools.
The Makefile then sees that and sets CC=$(CLANG_BIN)clang and
CXX=$(CLANG_BIN)clang++. That requires that the executables 'clang' and
'clang++' exist and for example aren't named 'clang-17' and
'clang++-17'. Also, it's an unusual way of specifying the compiler,
since many users will expect to be able to override CC and CXX on the
make command line.
Rework the BaseTools Makefiles removing the 'BUILD_' prefix (BUILD_CC
and BUILD_CXX) and using the standard name 'LDFLAGS' instead of
'LFLAGS'. This allows clang to be used by running
'make -C BaseTools CC=clang CXX=clang++'.
Signed-off-by: Rebecca Cran <rebecca@quicinc.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
In https://bugzilla.tianocore.org/show_bug.cgi?id=2842 clang support was
added by having users specify "make CXX=llvm" when building BaseTools.
The Makefile then sees that and sets CC=$(CLANG_BIN)clang and
CXX=$(CLANG_BIN)clang++. That requires that the executables 'clang' and
'clang++' exist and for example aren't named 'clang-17' and
'clang++-17'. Also, it's an unusual way of specifying the compiler,
since many users will expect to be able to override CC and CXX on the
make command line.
Rework the BaseTools Makefiles removing the 'BUILD_' prefix (BUILD_CC
and BUILD_CXX) and using the standard name 'LDFLAGS' instead of
'LFLAGS'. This allows clang to be used by running
'make -C BaseTools CC=clang CXX=clang++'.
Signed-off-by: Rebecca Cran <rebecca@quicinc.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2842
To use LLVM to build BaseTools, first set the CLANG_BIN environment value,
and add "CXX=llvm" to choose LLVM compiler set when using make command.
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>
Reviewed-by: Yuwei Chen<yuwei.chen@intel.com>
In commit 81502cee20 ("BaseTools/Source/C: take EXTRA_LDFLAGS from the
caller", 2018-08-16), I missed that "VfrCompile/GNUmakefile" does not use
BUILD_LFLAGS in the APPLICATION linking rule, unlike "app.makefile" does.
Instead, "VfrCompile/GNUmakefile" uses the (undefined) LFLAGS macro.
Therefore commit 81502cee20 did not cover the linking step of
VfrCompile.
Thankfully, the structure of the linking rules is the same, between
"app.makefile" and "VfrCompile/GNUmakefile". Rename the undefined LFLAGS
macro in "VfrCompile/GNUmakefile" to VFR_LFLAGS (for consistency with
VFR_CXXFLAGS), and set it to EXTRA_LDFLAGS.
As a result, we have:
| compilation | linking
-----------+--------------------------------+----------------------
VfrCompile | VFR_CXXFLAGS = | VFR_LFLAGS =
| BUILD_OPTFLAGS = | EXTRA_LDFLAGS
| '-O2' + EXTRA_OPTFLAGS |
-----------+--------------------------------+----------------------
other apps | BUILD_CFLAGS/BUILD_CXXFLAGS = | BUILD_LFLAGS =
| [...] + BUILD_OPTFLAGS = | [...] + EXTRA_LDFLAGS
| [...] + '-O2' + EXTRA_OPTFLAGS |
This table shows
- that the VfrCompile compilation and linking flags are always a subset of
the corresponding flags used by the other apps,
- and that the EXTRA flags are always at the end.
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1540244
Fixes: 81502cee20
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
The option "-O2" is not a preprocessor flag, but a code generation
(compilation) flag. Move it from BUILD_CPPFLAGS to BUILD_CFLAGS and
BUILD_CXXFLAGS.
Because "VfrCompile/GNUmakefile" uses "-O2" through BUILD_CPPFLAGS, and
because it doesn't use BUILD_CXXFLAGS, we have to introduce BUILD_OPTFLAGS
separately, so that "VfrCompile/GNUmakefile" can continue using just this
flag.
This patch doesn't change behavior.
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1540244
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
HOST_ARCH has been moved into the common header.makefile
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
https://bugzilla.tianocore.org/show_bug.cgi?id=793
ARCH is too generic. It may cause confuse of target arch or host arch.
To be clarified, replace it with HOST_ARCH in BaseTools C Makefile.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
Rebecca Cran
Liu, Zhiguang
Leif Lindholm
Michael D Kinney
Laszlo Ersek
Liming Gao
lgao4
qhuang8