alsa-utils_1.0.24.2.bb: Fix build for uclibc targets

uclibc does not have exp10() implemented so we obtain
same behaviour using pow()

(From OE-Core rev: 199e76cd3d3bafef189d5a82e65796fb4a0c6536)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/alsa/alsa-utils-1.0.24.2/uclibc-exp10-replacement.patch b/meta/recipes-multimedia/alsa/alsa-utils-1.0.24.2/uclibc-exp10-replacement.patch
new file mode 100644
index 0000000000..038c90d600
--- /dev/null
+++ b/meta/recipes-multimedia/alsa/alsa-utils-1.0.24.2/uclibc-exp10-replacement.patch
@@ -0,0 +1,21 @@
+uclibc does not have exp10 function which is glibc extension.
+Bur we can get the same behavior by using pow()
+
+Upstream-status: Pending
+
+Khem Raj <raj.khem@gmail.com>
+
+Index: alsa-utils-1.0.24.2/alsamixer/volume_mapping.c
+===================================================================
+--- alsa-utils-1.0.24.2.orig/alsamixer/volume_mapping.c
++++ alsa-utils-1.0.24.2/alsamixer/volume_mapping.c
+@@ -36,6 +36,9 @@
+ #include <math.h>
+ #include <stdbool.h>
+ #include "volume_mapping.h"
++#ifdef __UCLIBC__
++#define exp10(x) (pow(10, (x)))
++#endif /* __UCLIBC__ */
+ 
+ #define MAX_LINEAR_DB_SCALE    24
+