long double math does have compile problems with latest uClibc

target/sparc/uclibc-ng.config

@@ -53,7 +53,7 @@ UCLIBC_HAS_FPU=y
 DO_C99_MATH=y
 # DO_XSI_MATH is not set
 UCLIBC_HAS_FENV=y
-UCLIBC_HAS_LONG_DOUBLE_MATH=y
+# UCLIBC_HAS_LONG_DOUBLE_MATH is not set
 KERNEL_HEADERS=""
 HAVE_DOT_CONFIG=y
 

target/sparc/uclibc.config

@@ -58,7 +58,7 @@ UCLIBC_HAS_FPU=y
 DO_C99_MATH=y
 # DO_XSI_MATH is not set
 UCLIBC_HAS_FENV=y
-UCLIBC_HAS_LONG_DOUBLE_MATH=y
+# UCLIBC_HAS_LONG_DOUBLE_MATH is not set
 KERNEL_HEADERS=""
 HAVE_DOT_CONFIG=y