Re: Add script to build many glibc configurations

[Zack Weinberg <zackw at panix dot com>]

On 11/17/2016 11:52 AM, Zack Weinberg wrote:
> On 11/09/2016 11:27 AM, Joseph Myers wrote:
>> This patch adds a Python (3.5 or later) script to build many different
>> configurations of glibc, including building the required cross
>> compilers first.  It's not intended to change any patch testing
>> requirements, although some people may wish to use it for high-risk
>> patches such as adding warning options ...
> 
> Since this does its own glibc checkout, it's not clear to me how one
> should use it to test a patch(set).  I presume that whatever one does,
> it only affects the "glibcs" step, but what actually do you do?  Do you
> manually update /some/where/src/glibc to contain the code you want
> tested and then run "glibcs", or do you somehow tell
> build-many-glibcs.py the name of a branch you want tested, or what?

I went ahead with the setup steps, and they failed during the compilers
phase.  It seems that it's not picking up the host libraries I just
built.  Now what?

$ ./glibc/scripts/build-many-glibcs.py $PWD/glibc-many host-libraries
PASS: host-libraries gmp rm
PASS: host-libraries gmp mkdir
PASS: host-libraries gmp configure
PASS: host-libraries gmp build
PASS: host-libraries gmp check
PASS: host-libraries gmp install
PASS: host-libraries gmp cleanup
PASS: host-libraries mpfr rm
PASS: host-libraries mpfr mkdir
PASS: host-libraries mpfr configure
PASS: host-libraries mpfr build
PASS: host-libraries mpfr check
PASS: host-libraries mpfr install
PASS: host-libraries mpfr cleanup
PASS: host-libraries mpc rm
PASS: host-libraries mpc mkdir
PASS: host-libraries mpc configure
PASS: host-libraries mpc build
PASS: host-libraries mpc check
PASS: host-libraries mpc install
PASS: host-libraries mpc cleanup
PASS: host-libraries done

$ ./glibc/scripts/build-many-glibcs.py $PWD/glibc-many compilers
PASS: compilers-aarch64_be-linux-gnu check-host-libraries
PASS: compilers-aarch64-linux-gnu check-host-libraries
PASS: compilers-alpha-linux-gnu check-host-libraries
PASS: compilers-arm-linux-gnueabi check-host-libraries
PASS: compilers-arm-linux-gnueabihf check-host-libraries
PASS: compilers-armeb-linux-gnueabi check-host-libraries
PASS: compilers-armeb-linux-gnueabi-be8 check-host-libraries
PASS: compilers-armeb-linux-gnueabihf check-host-libraries
...
PASS: compilers-arm-linux-gnueabi linux mkdir
FAIL: compilers-alpha-linux-gnu gcc-first configure

$ cat
logs/compilers/alpha-linux-gnu/013-compilers-alpha-linux-gnu-gcc-first-configure-log.txt
Thu Nov 17 11:50:29 EST 2016

Description: compilers-alpha-linux-gnu gcc-first configure
Command: /home/zack/projects/glibc-many/src/gcc/configure
--prefix=/home/zack/projects/glibc-many/install/compilers/alpha
-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=alpha-glibc-linux-gnu --with-sysroot=/home/zac
k/projects/glibc-many/install/compilers/alpha-linux-gnu/sysroot
--disable-libsanitizer --disable-libssp --enable-languages=c
--disable-shared --disable-threads --disable-libatomic
--disable-decimal-float --disable-libffi --disable-libgomp
--disable-libitm --disable-libmpx --disable-libquadmath
--without-headers --with-newlib --with-glibc-version=2.24
Directory:
/home/zack/projects/glibc-many/build/compilers/alpha-linux-gnu/gcc-first
Path addition:
/home/zack/projects/glibc-many/install/compilers/alpha-linux-gnu/bin

checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... alpha-glibc-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln works... yes
checking whether ln -s works... yes
checking for a sed that does not truncate output... /bin/sed
checking for gawk... gawk
checking for libcilkrts support... no
checking for libvtv support... no
checking for x86_64-pc-linux-gnu-gcc... no
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for x86_64-pc-linux-gnu-g++... no
checking for x86_64-pc-linux-gnu-c++... no
checking for x86_64-pc-linux-gnu-gpp... no
checking for x86_64-pc-linux-gnu-aCC... no
checking for x86_64-pc-linux-gnu-CC... no
checking for x86_64-pc-linux-gnu-cxx... no
checking for x86_64-pc-linux-gnu-cc++... no
checking for x86_64-pc-linux-gnu-cl.exe... no
checking for x86_64-pc-linux-gnu-FCC... no
checking for x86_64-pc-linux-gnu-KCC... no
checking for x86_64-pc-linux-gnu-RCC... no
checking for x86_64-pc-linux-gnu-xlC_r... no
checking for x86_64-pc-linux-gnu-xlC... no
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking whether g++ accepts -static-libstdc++ -static-libgcc... yes
checking for x86_64-pc-linux-gnu-gnatbind... no
checking for gnatbind... no
checking for x86_64-pc-linux-gnu-gnatmake... no
checking for gnatmake... no
checking whether compiler driver understands Ada... no
checking how to compare bootstrapped objects... cmp --ignore-initial=16
$$f1 $$f2
checking for objdir... .libs
checking for the correct version of gmp.h... yes
checking for the correct version of mpfr.h... no
configure: error: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC
0.8.0+.
Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
their locations.  Source code for these libraries can be found at
their respective hosting sites as well as at
ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
http://gcc.gnu.org/install/prerequisites.html for additional info.  If
you obtained GMP, MPFR and/or MPC from a vendor distribution package,
make sure that you have installed both the libraries and the header
files.  They may be located in separate packages.

FAIL: compilers-alpha-linux-gnu gcc-first configure

Thu Nov 17 11:50:30 EST 2016

(I see a libgmp.a (for instance) in install/host-libraries/lib/, but not
in install/compilers/alpha-linux-gnu/sysroot/, which is the only place
the above configure operation might have thought to look for it.)