1Fix build on big endian systems 2 3The usb_linux_client.c file defines cpu_to_le16/32 by using the C 4library htole16/32 function calls. However, cpu_to_le16/32 are used 5when initializing structures, i.e in a context where a function call 6is not allowed. 7 8It works fine on little endian systems because htole16/32 are defined 9by the C library as no-ops. But on big-endian systems, they are 10actually doing something, which might involve calling a function, 11causing build failures. 12 13To solve this, we simply open-code cpu_to_le16/32 in a way that allows 14them to be used when initializing structures. 15 16Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 17 18Index: b/core/adb/usb_linux_client.c 19=================================================================== 20--- a/core/adb/usb_linux_client.c 21+++ b/core/adb/usb_linux_client.c 22@@ -34,8 +34,15 @@ 23 #define MAX_PACKET_SIZE_FS 64 24 #define MAX_PACKET_SIZE_HS 512 25 26-#define cpu_to_le16(x) htole16(x) 27-#define cpu_to_le32(x) htole32(x) 28+#if __BYTE_ORDER == __LITTLE_ENDIAN 29+# define cpu_to_le16(x) (x) 30+# define cpu_to_le32(x) (x) 31+#else 32+# define cpu_to_le16(x) ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)) 33+# define cpu_to_le32(x) \ 34+ ((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >> 8) | \ 35+ (((x) & 0x0000ff00u) << 8) | (((x) & 0x000000ffu) << 24)) 36+#endif 37 38 struct usb_handle 39 { 40Index: b/core/adbd/usb_linux_client.c 41=================================================================== 42--- a/core/adbd/usb_linux_client.c 43+++ b/core/adbd/usb_linux_client.c 44@@ -34,8 +34,15 @@ 45 #define MAX_PACKET_SIZE_FS 64 46 #define MAX_PACKET_SIZE_HS 512 47 48-#define cpu_to_le16(x) htole16(x) 49-#define cpu_to_le32(x) htole32(x) 50+#if __BYTE_ORDER == __LITTLE_ENDIAN 51+# define cpu_to_le16(x) (x) 52+# define cpu_to_le32(x) (x) 53+#else 54+# define cpu_to_le16(x) ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)) 55+# define cpu_to_le32(x) \ 56+ ((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >> 8) | \ 57+ (((x) & 0x0000ff00u) << 8) | (((x) & 0x000000ffu) << 24)) 58+#endif 59 60 struct usb_handle 61 { 62