Optimize libaries for speed, provide space versions only for arm and arc

Targets that want to add the -Os versions can include
CT_MULTILIB_SPACE=y to their config files like arm and arc do.

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

Author: keith-packard

configs/arc-zephyr-elf.config

@@ -4,3 +4,4 @@ CT_ARCH_ARC=y
 CT_TARGET_VENDOR="zephyr"
 CT_TARGET_CFLAGS="-mno-sdata -mtp-regno=26 -ftls-model=local-exec"
 CT_MULTILIB=y
+CT_MULTILIB_SPACE=y

configs/arm-zephyr-eabi.config

@@ -5,5 +5,6 @@ CT_ARCH_ARM_INTERWORKING=y
 CT_TARGET_VENDOR="zephyr"
 CT_TARGET_CFLAGS="-ftls-model=local-exec"
 CT_MULTILIB=y
+CT_MULTILIB_SPACE=y
 CT_CC_GCC_MULTILIB_LIST="rmprofile"
 CT_LIBC_NEWLIB_NANO_TARGET_CFLAGS="-mthumb-interwork"

configs/common.config

@@ -17,7 +17,6 @@ CT_GCC_SRC_CUSTOM=y
 CT_GCC_CUSTOM_LOCATION="${GITHUB_WORKSPACE}/gcc"
 CT_CC_GCC_EXTRA_CONFIG_ARRAY="--with-gnu-ld --with-gnu-as --enable-initfini-array"
 CT_CC_LANG_CXX=y
-CT_MULTILIB_SPACE=y
 
 # Newlib
 CT_NEWLIB_SRC_CUSTOM=y
@@ -73,4 +72,5 @@ CT_PICOLIBC_SRC_CUSTOM=y
 CT_PICOLIBC_CUSTOM_LOCATION="${GITHUB_WORKSPACE}/picolibc"
 CT_LIBC_PICOLIBC_GLOBAL_ATEXIT=y
 CT_LIBC_PICOLIBC_EXTRA_SECTIONS=y
+CT_LIBC_PICOLIBC_ENABLE_TARGET_OPTSPACE=n
 CT_LIBC_PICOLIBC_EXTRA_CONFIG_ARRAY="-Dthread-local-storage=auto -Derrno-function=zephyr -Dsysroot-install=true -Dsysroot-install-skip-checks=true -Dassert-verbose=false"