I’m trying to configure GCC 4.7.2, but it’s failing with configure: error: Unable to find a usable PPL
I’ve looked in GCC prerequisites page and PPL isn’t mentioned anywhere.
I’m using CLooG 0.17.0, which uses ISL, and as such no longer requires PPL (as far as I can tell)
Is there some other requirement on PPL in GCC which means I still need PPL, or am I missing some flag from my configure line?
I am passing the following options to configure:
--enable-cloog-backend=isl--with-cloog=$PREFIX--with-isl=$PREFIX--with-gmp=$PREFIX--with-mpfr=$PREFIX--with-mpc=$PREFIX
For completeness, my full configure line is as follows:
./configure --prefix=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64 --disable-multilib --enable-cloog-backend=isl --with-mpc=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64 --with-mpfr=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64 --with-gmp=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64 --with-isl=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64 --with-cloog=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64 --build=x86_64-suse-linux --with-pkgversion='SIG build 11/27/2012' --with-gxx-include-dir=/hostname/tmp/syddev/sdk/gcc472/suse11/x86_64/include/c++/4.7.2 --enable-version-specific-runtime-libsUpdate:
In order to try make forward progress I decided to add PPL to my installation list, and add --with-ppl=$PREFIX to my configure line.
Configure still fails with configure: error: Unable to find a usable PPL
It seems this is a bug in the configure script: Configure fails if PPL_MINOR_VERSION < 11
With the latest version PPL_MINOR_VERSION=0 (and PPL_MAJOR_VERSION=1)
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Answer
The GCC Prerequisites page jumped the gun and is showing the prerequisites for GCC 4.8.
GCC 4.7.2 still uses PPL instead of ISL, as evidenced by the lack of --with-isl=PATH in the output of configure:
Optional Packages: --with-PACKAGE[=ARG] use PACKAGE [ARG=yes] --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no) --with-build-libsubdir=DIR Directory where to find libraries for build system --with-mpc=PATH specify prefix directory for installed MPC package. Equivalent to --with-mpc-include=PATH/include plus --with-mpc-lib=PATH/lib --with-mpc-include=PATH specify directory for installed MPC include files --with-mpc-lib=PATH specify directory for the installed MPC library --with-mpfr-dir=PATH this option has been REMOVED --with-mpfr=PATH specify prefix directory for installed MPFR package. Equivalent to --with-mpfr-include=PATH/include plus --with-mpfr-lib=PATH/lib --with-mpfr-include=PATH specify directory for installed MPFR include files --with-mpfr-lib=PATH specify directory for the installed MPFR library --with-gmp-dir=PATH this option has been REMOVED --with-gmp=PATH specify prefix directory for the installed GMP package. Equivalent to --with-gmp-include=PATH/include plus --with-gmp-lib=PATH/lib --with-gmp-include=PATH specify directory for installed GMP include files --with-gmp-lib=PATH specify directory for the installed GMP library --with-host-libstdcxx=L use linker arguments L to link with libstdc++ when linking with PPL --with-stage1-ldflags=FLAGS linker flags for stage1 --with-stage1-libs=LIBS libraries for stage1 --with-boot-libs=LIBS libraries for stage2 and later --with-boot-ldflags=FLAGS linker flags for stage2 and later --with-ppl=PATH specify prefix directory for the installed PPL package. Equivalent to --with-ppl-include=PATH/include plus --with-ppl-lib=PATH/lib --with-ppl-include=PATH specify directory for installed PPL include files --with-ppl-lib=PATH specify directory for the installed PPL library --with-cloog=PATH Specify prefix directory for the installed CLooG-PPL package. Equivalent to --with-cloog-include=PATH/include plus --with-cloog-lib=PATH/lib --with-cloog-include=PATH Specify directory for installed CLooG include files --with-cloog-lib=PATH Specify the directory for the installed CLooG library --with-build-sysroot=SYSROOT use sysroot as the system root during the build --with-debug-prefix-map='A=B C=D ...' map A to B, C to D in debug information --with-build-config='NAME NAME2...' use config/NAME.mk build configuration --with-build-time-tools=PATH use given path to find target tools during the buildIt’s unfortunate that they don’t maintain prerequisites pages for versions prior to 4.8.