libc/picolibc: Only enable malloc when required

When malloc is included in the build, the heap initialization code will be pulled in even if the application doesn't actually use malloc. This increases the size of executables by a few hundred bytes and delays system startup. Select COMMON_LIBC_MALLOC only when applications indicate that they require malloc by setting REQUIRES_MALLOC. Signed-off-by: Keith Packard <[email protected]>
zephyrproject-rtos · Nov 16, 2023 · 1d7105b · 1d7105b
1 parent 33ab196
commit 1d7105b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/libc/Kconfig b/lib/libc/Kconfig
@@ -102,7 +102,7 @@ config PICOLIBC
 	imply THREAD_LOCAL_STORAGE if ARCH_HAS_THREAD_LOCAL_STORAGE && TOOLCHAIN_SUPPORTS_THREAD_LOCAL_STORAGE
 	select LIBC_ERRNO if THREAD_LOCAL_STORAGE
 	select NEED_LIBC_MEM_PARTITION
-	imply COMMON_LIBC_MALLOC
+	select COMMON_LIBC_MALLOC if REQUIRES_MALLOC
 	depends on !NATIVE_APPLICATION
 	depends on PICOLIBC_SUPPORTED
 	help