picolibc: Enable dual-mode picolibc builds

This provides both minsize and release versions of picolibc in the SDK,
allowing users to select between them while building their application.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

cmake/zephyr/generic.cmake

@@ -31,3 +31,4 @@ set(CROSS_COMPILE ${one_toolchain_root}/${CROSS_COMPILE_TARGET}/bin/${CROSS_COMP
 set(SYSROOT_DIR   ${one_toolchain_root}/${SYSROOT_TARGET}/${SYSROOT_TARGET})
 set(TOOLCHAIN_HAS_NEWLIB ON CACHE BOOL "True if toolchain supports newlib")
 set(TOOLCHAIN_HAS_PICOLIBC ON CACHE BOOL "True if toolchain supports picolibc")
+set(TOOLCHAIN_HAS_PICOLIBC_DUAL ON CACHE BOOL "True if toolchain supports --picolibc-buildtype=release")

configs/common.config

@@ -71,5 +71,6 @@ CT_COMP_LIBS_PICOLIBC=y
 CT_PICOLIBC_SRC_CUSTOM=y
 CT_PICOLIBC_CUSTOM_LOCATION="${GITHUB_WORKSPACE}/picolibc"
 CT_LIBC_PICOLIBC_GLOBAL_ATEXIT=y
+CT_LIBC_PICOLIBC_ENABLE_TARGET_OPTBOTH=y
 CT_LIBC_PICOLIBC_EXTRA_SECTIONS=y
 CT_LIBC_PICOLIBC_EXTRA_CONFIG_ARRAY="-Dthread-local-storage=auto -Derrno-function=zephyr -Dsysroot-install=true -Dsysroot-install-skip-checks=true -Dassert-verbose=false"