diff --git a/common/environment/configure/autoconf_cache/powerpc32-linux b/common/environment/configure/autoconf_cache/powerpc32-linux
index 172a06cc46e..19c7920f256 100644
--- a/common/environment/configure/autoconf_cache/powerpc32-linux
+++ b/common/environment/configure/autoconf_cache/powerpc32-linux
@@ -8,7 +8,6 @@ ac_cv_sizeof_int=${ac_cv_sizeof_int=4}
 ac_cv_sizeof_int_p=${ac_cv_sizeof_int_p=4}
 ac_cv_sizeof_long=${ac_cv_sizeof_long=4}
 ac_cv_sizeof_long_p=${ac_cv_sizeof_long_p=4}
-ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=16}
 ac_cv_sizeof_long_int=${ac_cv_sizeof_long_int=4}
 ac_cv_sizeof_long_long=${ac_cv_sizeof_long_long=8}
 ac_cv_sizeof_long_long_int=${ac_cv_sizeof_long_long_int=8}
@@ -35,6 +34,17 @@ ac_cv_ushort=${ac_cv_ushort=yes}
 ac_cv_time_r_type=${ac_cv_time_r_type=POSIX}
 cookie_io_functions_use_off64_t=${cookie_io_functions_use_off64_t=yes}
 
+if [ "$XBPS_TARGET_LIBC" = "musl" ]; then
+	ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=8}
+else
+	ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=16}
+
+	# libc
+	libc_cv_ppc_machine=${libc_cv_ppc_machine=yes}
+	libc_cv_mlong_double_128ibm=${libc_cv_mlong_double_128ibm=yes}
+	libc_cv_mabi_ibmlongdouble=${libc_cv_mabi_ibmlongdouble=yes}
+	libc_cv_mlong_double_128=${libc_cv_mlong_double_128=yes}
+fi
 
 # apache
 ac_cv_sizeof_ssize_t=${ac_cv_sizeof_ssize_t=4}
@@ -258,10 +268,3 @@ samba_cv_have_setresuid=${samba_cv_have_setresuid=yes}
 # mysql
 mysql_cv_func_atomic_sub=${mysql_cv_func_atomic_sub=no}
 mysql_cv_func_atomic_add=${mysql_cv_func_atomic_add=no}
-
-
-# libc
-libc_cv_ppc_machine=${libc_cv_ppc_machine=yes}
-libc_cv_mlong_double_128ibm=${libc_cv_mlong_double_128ibm=yes}
-libc_cv_mabi_ibmlongdouble=${libc_cv_mabi_ibmlongdouble=yes}
-libc_cv_mlong_double_128=${libc_cv_mlong_double_128=yes}
diff --git a/common/environment/configure/autoconf_cache/powerpc64-linux b/common/environment/configure/autoconf_cache/powerpc64-linux
index 820a4b84403..169a27de427 100644
--- a/common/environment/configure/autoconf_cache/powerpc64-linux
+++ b/common/environment/configure/autoconf_cache/powerpc64-linux
@@ -4,7 +4,6 @@ ac_cv_sizeof_double=${ac_cv_sizeof_double=8}
 ac_cv_sizeof_float=${ac_cv_sizeof_float=4}
 ac_cv_sizeof_int=${ac_cv_sizeof_int=4}
 ac_cv_sizeof_long=${ac_cv_sizeof_long=8}
-ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=16}
 ac_cv_sizeof_long_int=${ac_cv_sizeof_long_int=8}
 ac_cv_sizeof_long_long=${ac_cv_sizeof_long_long=8}
 ac_cv_sizeof_long_long_int=${ac_cv_sizeof_long_long_int=8}
@@ -20,6 +19,12 @@ ac_cv_sizeof_unsigned_short=${ac_cv_sizeof_unsigned_short=2}
 ac_cv_sizeof_unsigned_short_int=${ac_cv_sizeof_unsigned_short_int=2}
 ac_cv_sizeof_void_p=${ac_cv_sizeof_void_p=8}
 
+if [ "$XBPS_TARGET_LIBC" = "musl" ]; then
+	ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=8}
+else
+	ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=16}
+fi
+
 # screen
 screen_cv_sys_bcopy_overlap=${screen_cv_sys_bcopy_overlap=no}
 screen_cv_sys_memcpy_overlap=${screen_cv_sys_memcpy_overlap=no}