a07fc4b03b
The GCC package has a default conf option of disabling libquadmath and the toolchain dependencies selectively enabled it if i386 / x64. Fixes: https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359622 This patch fixes a build failure when (GCC + glibc) is being built for the IBM Power8 arch and has libgfortran enabled + libquadmath disabled. The libgfortran has a code condition for __float128 and includes the quadmath headers. The bug occurs because Power8 has emulated float128 support. The fix per GCC options is to also set --disable-libquadmath-support which disables the __float128/libquadmath support in gcc/fortran and in libgfortran [1]. Another option to fix the build failure was to enable libquadmath for IBM Power8 (ISA 2.07), however this would be soft float based as the ISA 3.0+ (Power9) first supports native float128 [2][3]. [1] https://fortran.gcc.gnu.narkive.com/8uSfoKUS/patch-build-pr-46540-add-disable-libquadmath-disable-libquadmath-support [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66382#c7 [3] https://gcc.gnu.org/onlinedocs/gcc/RS_002f6000-and-PowerPC-Options.html Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> |
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| toolchain | ||
| utils | ||
| .defconfig | ||
| .flake8 | ||
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| .gitlab-ci.yml | ||
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| Config.in | ||
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| README | ||
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches