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+# musl second-part option
+
+choice
+ prompt "How to optimize musl-libc"
+ default LIBC_MUSL_OPTIMIZE_AUTO
+
+config LIBC_MUSL_OPTIMIZE_NONE
+ bool
+ prompt "Do not optimize musl-libc"
+ help
+ This option sets `--enable-optimize=no' to disable optimization.
+
+config LIBC_MUSL_OPTIMIZE_AUTO
+ bool
+ prompt "Use musl-libc's automatic optimization"
+ help
+ This option sets `--enable-optimize=auto' to automatically set optimization.
+
+config LIBC_MUSL_OPTIMIZE_SPEED
+ bool
+ prompt "Optimize musl-libc for speed"
+ help
+ This option sets `--enable-optimize=yes' to set optimization to -O3 for speed.
+
+config LIBC_MUSL_OPTIMIZE_SIZE
+ bool
+ prompt "Optimize musl-libc for size"
+ help
+ This option sets `--enable-optimize=size' to set optimization to -Os for size.
+
+endchoice
+
+config LIBC_MUSL_OPTIMIZE
+ string
+ default "no" if LIBC_MUSL_OPTIMIZE_NONE
+ default "auto" if LIBC_MUSL_OPTIMIZE_AUTO
+ default "yes" if LIBC_MUSL_OPTIMIZE_SPEED
+ default "size" if LIBC_MUSL_OPTIMIZE_SIZE