The first patch in this series selects picolibc as the default C
library when the target is *-picolibc-*. This configures the default
compiler specs for picolibc usage, including the addition of three
picolic-specific options.
The section patch in this series allows the default C library to be
selected separately from the target name. This allows toolchains for
targets like Zephyr to use picolibc without needing to include
'picolibc' in the target name.
Since January, this series has been tested with 11 different targets
as a part of the Zephyr 0.18 SDK development work. This uncovered
issues with the generated specs which were fixed by adding
libc-specific spec fragment defines. The C library selection mechanism
has been simplified to only select between newlib and picolibc to
avoid any potential impact on other toolchains.
Keith Packard (2):
Support picolibc targets
Allow default libc (either newlib or picolibc) to be specified to
configure
gcc/config.gcc | 51 +++++++++++++++++++++++++++-----
gcc/config/picolibc-spec.h | 57 ++++++++++++++++++++++++++++++++++++
gcc/config/picolibc.opt | 47 +++++++++++++++++++++++++++++
gcc/config/picolibc.opt.urls | 2 ++
gcc/configure.ac | 4 +++
gcc/gcc.cc | 17 +++++++++--
6 files changed, 168 insertions(+), 10 deletions(-)
create mode 100644 gcc/config/picolibc-spec.h
create mode 100644 gcc/config/picolibc.opt
create mode 100644 gcc/config/picolibc.opt.urls
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2.49.0
