https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216229
Dimitry Andric <d...@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |d...@freebsd.org
Assignee|freebsd-toolchain@FreeBSD.o |d...@freebsd.org
|rg |
Status|New |In Progress
--- Comment #1 from Dimitry Andric <d...@freebsd.org> ---
(In reply to Mark Millard from comment #0)
> So the lines from /usr/src/lib/clang/llvm.build.mk for CFLAGS:
>
> CFLAGS+= -I${SRCTOP}/lib/clang/include
> CFLAGS+= -I${LLVM_SRCS}/include
> CFLAGS+= -DLLVM_ON_UNIX
> CFLAGS+= -DLLVM_ON_FREEBSD
> CFLAGS+= -D__STDC_LIMIT_MACROS
> CFLAGS+= -D__STDC_CONSTANT_MACROS
> #CFLAGS+= -DNDEBUG
> . . .
> CFLAGS+= -DLLVM_DEFAULT_TARGET_TRIPLE=\"${TARGET_TRIPLE}\"
> CFLAGS+= -DLLVM_HOST_TRIPLE=\"${BUILD_TRIPLE}\"
> CFLAGS+= -DDEFAULT_SYSROOT=\"${TOOLS_PREFIX}\"
>
> do not contribute to the C++ compiles for libllvmminimal.
This is incorrect: in share/mk/sys.mk, CXXFLAGS are derived from CFLAGS, with
the following rule:
CXXFLAGS ?=
${CFLAGS:N-std=*:N-Wnested-externs:N-W*-prototypes:N-Wno-pointer-sign:N-Wold-style-definition}
E.g. -std flags and some others are filtered out.
> The lack of -I definitions for C++ ends up with build failures
> such as below (from a first-time kernel-toolchain example):
I have seen such failures before, and they were almost always caused by setting
CFLAGS or CXXFLAGS incorrectly in /etc/make.conf, e.g. doing:
CFLAGS= -DFOO
CXXFLAGS= -DBAR
while one should use the += operator instead, e.g.:
CFLAGS+= -DFOO
CXXFLAGS+= -DBAR
Can you please post your make.conf?
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