commit c69db851309995c525b3993a10dc13dabdeb7b33
Author: Ronald Wahl <ronald.wahl@raritan.com>
Date:   Tue Nov 28 19:20:45 2017 +0100

    Fix build regression with DO_XSI_MATH disabled
    
    Commit ea38f4d89 (math: add exception handling functionality) adds a
    regression so that build configurations that have DO_C99_MATH enabled
    and DO_XSI_MATH disabled will not link. This commit moves the files with
    the bessel functions from DO_C99_MATH to DO_XSI_MATH. It looks like they
    are not even contained in C99.
    
    Signed-off-by: Ronald Wahl <ronald.wahl@raritan.com>

---
 libm/Makefile.in |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/libm/Makefile.in
+++ b/libm/Makefile.in
@@ -74,9 +74,6 @@
 	w_exp.c w_expf.c w_expl.c \
 	w_exp2.c w_exp2f.c w_exp2l.c \
 	w_exp10.c w_exp10f.c w_exp10l.c \
-	w_j0.c w_j0f.c w_j0l.c \
-	w_j1.c w_j1f.c w_j1l.c \
-	w_jn.c w_jnf.c w_jnl.c \
 	w_lgamma_r.c w_lgammaf_r.c w_lgammal_r.c \
 	w_lgamma.c w_lgammaf.c w_lgammal.c \
 	w_tgamma.c w_tgammaf.c w_tgammal.c \
@@ -267,7 +264,11 @@
 endif
 
 ifeq ($(DO_XSI_MATH),y)
-libm_CSRC += e_j0.c e_j1.c e_jn.c
+libm_CSRC += \
+	e_j0.c e_j1.c e_jn.c \
+	w_j0.c w_j0f.c w_j0l.c \
+	w_j1.c w_j1f.c w_j1l.c \
+	w_jn.c w_jnf.c w_jnl.c
 endif
 
 # assume that arch specific versions are provided as single sources/objects
