On Fri, 2018-06-08 at 22:16 +0200, Christopher Gregory wrote:
> > Sent: Saturday, June 09, 2018 at 5:00 AM
> > From: "Ken Moffat" <[email protected]>
> > To: "BLFS Support List" <[email protected]>
> > Subject: Re: [blfs-support] Cups-2.2.7 with clang 6 installed
> >
> > On Thu, Jun 07, 2018 at 09:56:05AM -0500, Bruce Dubbs wrote:
> > > On 06/07/2018 05:04 AM, Wayne Blaszczyk wrote:
> > >
> > > > I build llvm and clang separately and use slightly different parameters
> > > > to the book, hence why I didn't report this issue myself.
> > > > But looking at the configure script, (and I'm not expert reading these
> > > > scripts), but to me it looks like if it finds clang++, it will use it
> > > > rather than g++.
> > > > I would be interested in your configure output around this area:
> > > >
> > > > checking for gcc option to accept ISO C89... none needed
> > > > checking how to run the C preprocessor... gcc -E
> > > > checking for clang++... clang++
> > > > checking whether we are using the GNU C++ compiler... yes
> > > > checking whether clang++ accepts -g... yes
> > > > checking for ranlib... ranlib
> > > > checking for ar... /usr/bin/ar
> > > > checking for chmod... /bin/chmod
> > >
> > > Yes, I have the identical sequence on my log.
> > >
> >
> > As a long-time radeon user, what is in the book works for me too.
> >
> > My LLVM uses
> > CC=gcc CXX=g++ \
> > cmake -DCMAKE_INSTALL_PREFIX=/usr \
> > -DLLVM_ENABLE_FFI=ON \
> > -DCMAKE_BUILD_TYPE=Release \
> > -DLLVM_BUILD_LLVM_DYLIB=ON \
> > -DLLVM_LINK_LLVM_DYLIB=ON \
> > -DLLVM_TARGETS_TO_BUILD="host;AMDGPU" \
> > -Wno-dev ..
> >
> > and I do not build cups until after Xorg (but before the gtk
> > toolkits).
> >
> > With systemd disabled and just passing CC=gcc to configure, the
> > output from cups at the start of make is:
> >
> > config.status: creating config.h
> > Using ARCHFLAGS=
> > Using ALL_CFLAGS=-I.. -D_CUPS_SOURCE -O2 -march=native
> > -I/usr/include/libusb-1.0 -I/usr/include/dbus-1.0
> > -I/usr/lib/dbus-1.0/include -DDBUS_API_SUBJECT_TO_CHANGE
> > -I/usr/include/p11-kit-1
> > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_THREAD_SAFE -D_REENTRANT
> > Using ALL_CXXFLAGS=-I.. -D_CUPS_SOURCE -O2 -march=native
> > -I/usr/include/p11-kit-1 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_THREAD_SAFE -D_REENTRANT
> > Using CC=gcc
> > Using CXX=gcc
> > Using DSOFLAGS=-L../cups -Wl,-soname,all -shared -Wall -Wno-format-y2k
> > -Wunused -fPIC -Os -g -fstack-protector -Wno-unused-result
> > -Wsign-conversion -Wno-tautological-compare -Wno-format-
> > truncation -D_GNU_SOURCE
> > Using LDFLAGS=-L../cgi-bin -L../cups -L../filter -L../ppdc -L../scheduler
> > -fPIE -pie -Wall -Wno-format-y2k -Wunused -fPIC -Os -g -fstack-protector
> > -Wno-unused-result -Wsign-conversion -Wno-
> > tautological-compare -Wno-format-truncation -D_GNU_SOURCE
> > Using LIBS=-lcups -lgnutls -lz -lpthread -lm -lcrypt -lz
> > Making all in cups...
> >
> > Curious why it doesn't work for you.
> >
> > ĸen
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>
> Hello Ken,
>
> Your not the only one who is curious by this. It makes no sense that giving
> the exact same tar ball, and using the exact same method of building that two
> people get exactly the same error.
>
> Wayne, what version of the book are you using? ie is it systemd or sysv? I
> am just wondering if having systemd installed is some how or other messing
> things up. I have had to use this CC=gcc
> CXX=g++ on quite a few packages this time round.
>
> Regards,
>
> Christopher.
I used systemd.
My LLVM build uses the following:
CC=gcc CXX=g++ \
cmake -DCMAKE_INSTALL_PREFIX=/usr \
-DLLVM_ENABLE_FFI=ON \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_BUILD_LLVM_DYLIB=ON \
-DLLVM_TARGETS_TO_BUILD="host" \
-Wno-dev \
-DLLVM_LINK_LLVM_DYLIB=ON \
-DCMAKE_SHARED_LINKER_FLAGS="-Wl,-Bsymbolic" \
..
My clang build uses the following:
CC=gcc CXX=g++ \
cmake -DCMAKE_INSTALL_PREFIX=/usr \
-DLLVM_CONFIG=/usr/bin/llvm-config \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_LINK_LLVM_DYLIB=ON \
-Wno-dev \
..
I do not build the Compiler RT.
The reason why I made these changes at the time was,
1) I like to separate out builds into there individual packages.
2) I wanted to get rid of the LDFLAGS=-lLLVM from the mesa build due to llvm
being linked to every binary even if it was not needed.
Going back to the cups build, I added few echo commands into configure:
3480 if test -n "$CCC"; then
3481 CXX=$CCC
3482 echo FRED3: $CXX
3483 else
3484 if test -n "$ac_tool_prefix"; then
...
3570
3571 if test "x$ac_ct_CXX" = x; then
3572 CXX="g++"
3573 echo FRED1: $CXX
3574 else
3575 case $cross_compiling:$ac_tool_warned in
3576 yes:)
3577 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not
prefixed with host tr iplet" >&5
3578 $as_echo "$as_me: WARNING: using cross tools not prefixed with host
triplet" >&2;}
3579 ac_tool_warned=yes ;;
3580 esac
3581 CXX=$ac_ct_CXX
3582 echo FRED2: $CXX
3583 fi
3584 fi
3585
...
11703 chmod +x cups-config
11704 echo FRED4: $CXX
Running
wblaszcz [ /sources/cups-2.2.7 ]$ ./configure |grep FRED
FRED2: clang++
FRED4: clang++
wblaszcz [ /sources/cups-2.2.7 ]$ CC=gcc ./configure |grep FRED
FRED2: clang++
FRED4: clang++
wblaszcz [ /sources/cups-2.2.7 ]$ CC=gcc CXX=g++ ./configure |grep FRED
FRED4: g++
wblaszcz [ /sources/cups-2.2.7 ]$
Regards,
Wayne.
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