Re: NanoBSD: CURRENT unable to compile 13-STABLE : ld: error: args.o: Opaque pointers are only supported in -opaque-pointers mode (Producer: 'LLVM15.0.7' Reader: 'LLVM 14.0.5')

Am Thu, 30 Mar 2023 15:53:19 +0200
Mateusz Guzik <mjguzik@gmail.com> schrieb:

> On 3/30/23, FreeBSD User <freebsd@walstatt-de.de> wrote:
> > Hello folks,
> >
> > some strange misbehaviour in a NanoBSD compilation is driving me nuts.
> > Recently I posted some
> > error messages regarding
> >
> > [...]
> > src/sys/dev/an/if_an_pci.c:143:1: error: a
> > function definition without a prototype is deprecated in all versions of C
> > and is not
> > supported in C2x [-Werror,-Wdeprecated-non-prototype]
> > [...]
> >
> > but being able compiling the kernel was "a lucky shot/mistake" and in the
> > vain of discussion
> > it has been revealed that my nanoBSD specific "make.conf/src.conf"
> > configurations were wrong.
> >
> > So, again:
> >
> > The builder host is a recent CURRENT (FreeBSD 14.0-CURRENT #2
> > main-n261876-f5a365e51fee: Thu
> > Mar 30 11:23:19 CEST 2023 amd64), the target is a most recent 13-STABLE (git
> > pull on a
> > daily/hourly/most recentl basis when trying to build).
> >
> > As I understand the src/buildworld config, it seems crucial to have CURRENT
> > and 13-STABLE
> > somehow separated due to their divergende in used LLVM/CLANG (CURRENT has
> > LLVM 15, 13-STABLE
> > is with LLVM 14).
> >
> > Putting
> >
> > WITHOUT_SYSTEM_COMPILER=YES
> > WITHOUT_SYSTEM_LINKER=YES
> >
> > into CONF_BUILD= AND CONF_WORLD= of NanoBSD configuration should prevent the
> > usage of
> > CURRENT's LLVM 15 and instead a cross compiling with 13-STABLE's LLVM 14
> > compiler and linker
> > should be used to buildworld.
> >
> > But this doesn't seem to happen (at least in my case), since buildworld
> > fails to build with:
> >
> > [...]
> > cc -target x86_64-unknown-freebsd13.2
> > --sysroot=/pool/home/ohartmann/Projects/router/router/apu2c4/world/obj/amd64/ALERICH_13-STABLE_amd64/pool/home/ohartmann/Projects/router/router/apu2c4/src/amd64.amd64/tmp
> > -B/pool/home/ohartmann/Projects/router/router/apu2c4/world/obj/amd64/ALERICH_13-STABLE_amd64/pool/home/ohartmann/Projects/router/router/apu2c4/src/amd64.amd64/tmp/usr/bin
> > -O2 -pipe -fno-common -DMAINEXEC=bc -DNLSPATH=/usr/share/nls/%L/%N.cat
> > -DBUILD_TYPE=A
> > -DBC_DEFAULT_BANNER=0 -DBC_DEFAULT_PROMPT=0 -DBC_DEFAULT_SIGINT_RESET
> > -DBC_DEFAULT_TTY_MODE
> > -DBC_ENABLED -DBC_ENABLE_EDITLINE -DBC_ENABLE_EXTRA_MATH
> > -DBC_ENABLE_LIBRARY=0
> > -DBC_ENABLE_LONG_OPTIONS -DBC_ENABLE_HISTORY -DBC_ENABLE_PROMPT
> > -DBC_ENABLE_RAND
> > -DDC_DEFAULT_PROMPT=0 -DDC_DEFAULT_SIGINT_RESET -DDC_DEFAULT_TTY_MODE=0
> > -DDC_ENABLED -DNDEBUG
> > -I/pool/home/ohartmann/Projects/router/router/apu2c4/src/contrib/bc/include
> > -DBC_ENABLE_NLS=1
> > -flto -DNDEBUG -fPIE -mretpoline -ftrivial-auto-var-init=zero
> > -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
> > -std=gnu99
> > -Wno-format-zero-length -fstack-protector-strong -Wsystem-headers -Wall
> > -Wno-format-y2k -W
> > -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes
> > -Wpointer-arith -Wreturn-type
> > -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter
> > -Wcast-align
> > -Wchar-subscripts -Wnested-externs -Wold-style-definition -Wno-pointer-sign
> > -Wmissing-variable-declarations -Wthread-safety -Wno-empty-body
> > -Wno-string-plus-int
> > -Wno-unused-const-variable -Wno-error=unused-but-set-variable
> > -Qunused-arguments  -Wl,-zrelro
> > -pie -Wl,-zretpolineplt   -o gh-bc args.o bc.o bc_lex.o bc_parse.o data.o
> > dc.o dc_lex.o
> > dc_parse.o file.o history.o lang.o lex.o main.o num.o opt.o parse.o
> > program.o rand.o read.o
> > vector.o vm.o bc_help.o dc_help.o lib.o lib2.o   -ledit ld: error: args.o:
> > Opaque pointers are
> > only supported in -opaque-pointers mode (Producer: 'LLVM15.0.7' Reader:
> > 'LLVM 14.0.5') cc:
> > error: linker command failed with exit code 1 (use -v to see invocation) ***
> > [gh-bc] Error
> > code 1
> >
> > make[5]: stopped in
> > /pool/home/ohartmann/Projects/router/router/apu2c4/src/usr.bin/gh-bc
> > [...]
> >
> >
> > I'm now out of options here :-(
> >  
> 
> are you even using the dev/an driver?

No, it is commented out in the kernel config file. That error occurs when using the CURRENT
system's compiler building the nanoBSD binaries.

> 
> you should probably just remove it from the kernel (and any other
> driver of the sort)

I tried to put the option 

WITHOUT_MODULE="an"

into the nanoBSD sections building world/installing world as initially described - but without
any effect. To be honest, at this moment I'm stuck with the error reported above in building
world preventing me proceeding to buildkernel.

> 
> ultimately you should be able to stick to the compiler from main. in
> the worst case the commit to turn "function definition without a
> prototype is deprecated" from errors to warnings could be merged to
> stable/13 to facilitate the build
> 
> it may be you will be able to get away with modifying CFLAGS like so:
> CFLAGS+=-Wno-deprecated-non-prototype

Well, I live my freeBSD life under the impression using 

WITHOUT_SYSTEM_{COMPILER|LINKER}

gives me a full cross-compiler environment putting myself in the position compiling 13-STABLE
with a bootstrapped/self hosted compiler for the build of 13-STABLE. But this seems not the
whole truth ...

> 
> in src.conf and/or make.conf
> 

NanoBSD has a kind of "merged" src.conf/make.conf and it is sometimes obscure to figure out
from the outside what is used from the NanoBSD config to feed both make.conf and src.conf
during a buildworld/buildkernel.


-- 
O. Hartmann