https://bugs.gentoo.org/727008

diff --git a/bfgminer/adl.h b/bfgminer/adl.h

index 6a22e2b..f37aa8e 100644

--- a/bfgminer/adl.h

+++ b/bfgminer/adl.h

@@ -4,10 +4,10 @@

 #include <stdbool.h>

-bool adl_active;

-bool opt_reorder;

-const int opt_targettemp;

-const int opt_overheattemp;

+extern bool adl_active;

+extern bool opt_reorder;

+extern const int opt_targettemp;

+extern const int opt_overheattemp;

 void init_adl(int nDevs);

 float gpu_temp(int gpu);

 int gpu_engineclock(int gpu);

diff --git a/bfgminer/driver-cpu.c b/bfgminer/driver-cpu.c

index 26c894d..d208df6 100644

--- a/bfgminer/driver-cpu.c

+++ b/bfgminer/driver-cpu.c

@@ -43,6 +43,8 @@

 BFG_REGISTER_DRIVER(cpu_drv)

+struct cgpu_info *cpus;

+

 #if defined(__linux) && defined(CPU_ZERO)  /* Linux specific policy and affinity management */

 #include <sched.h>

 static inline void drop_policy(void)

diff --git a/bfgminer/driver-opencl.c b/bfgminer/driver-opencl.c

index 67a2bba..9c1761b 100644

--- a/bfgminer/driver-opencl.c

+++ b/bfgminer/driver-opencl.c

@@ -795,7 +795,6 @@ char *print_ndevs_and_exit(int *ndevs)

 struct cgpu_info gpus[MAX_GPUDEVICES]; /* Maximum number apparently possible */

-struct cgpu_info *cpus;

 /* In dynamic mode, only the first thread of each device will be in use.

diff --git a/bfgminer/knc-asic/knc-asic.h b/bfgminer/knc-asic/knc-asic.h

index 3f96e3c..514ba98 100644

--- a/bfgminer/knc-asic/knc-asic.h

+++ b/bfgminer/knc-asic/knc-asic.h

@@ -44,7 +44,7 @@ enum asic_version {

 	KNC_VERSION_JUPITER,

 	KNC_VERSION_NEPTUNE,

 	KNC_VERSION_TITAN,

-} version;

+};

 struct knc_die_info {

 	enum asic_version version;

diff --git a/bfgminer/miner.c b/bfgminer/miner.c

index 6f33584..027da43 100644

--- a/bfgminer/miner.c

+++ b/bfgminer/miner.c

@@ -3762,10 +3762,6 @@ static int statusy;

 static int devsummaryYOffset;

 static int total_lines;

 #endif

-#ifdef USE_OPENCL

-struct cgpu_info gpus[MAX_GPUDEVICES]; /* Maximum number apparently possible */

-#endif

-struct cgpu_info *cpus;

 bool _bfg_console_cancel_disabled;

 int _bfg_console_prev_cancelstate;

diff --git a/bfgminer/sha256_sse2_amd64.c b/bfgminer/sha256_sse2_amd64.c

index cfc1da0..e0023c9 100644

--- a/bfgminer/sha256_sse2_amd64.c

+++ b/bfgminer/sha256_sse2_amd64.c

@@ -48,7 +48,6 @@ static uint32_t g_sha256_k[]__attribute__((aligned(0x100))) = {

 const uint32_t sha256_init_sse2[8]__asm__("sha256_init_sse2")__attribute__((aligned(0x100))) =

 {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};

-__m128i g_4sha256_k[64];

 __m128i sha256_consts_m128i[64]__asm__("sha256_consts_m128i")__attribute__((aligned(0x1000)));

 bool scanhash_sse2_64(struct thr_info * const thr, struct work * const work,

diff --git a/bfgminer/sha256_sse2_i386.c b/bfgminer/sha256_sse2_i386.c

index 757a4e1..6883e60 100644

--- a/bfgminer/sha256_sse2_i386.c

+++ b/bfgminer/sha256_sse2_i386.c

@@ -48,7 +48,6 @@ static uint32_t g_sha256_k[]__attribute__((aligned(0x100))) = {

 const uint32_t sha256_32init[8]__attribute__((aligned(0x100))) =

 {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};

-__m128i g_4sha256_k[64];

 __m128i sha256_consts_m128i[64]__asm__("sha256_consts_m128i")__attribute__((aligned(0x1000)));

 bool scanhash_sse2_32(struct thr_info * const thr, struct work * const work,

diff --git a/bfgminer/util.h b/bfgminer/util.h

index 9732121..9f59b8b 100644

--- a/bfgminer/util.h

+++ b/bfgminer/util.h

@@ -217,7 +217,7 @@ void cgsleep_us(int64_t us);

 #define cgtimer_time(ts_start) timer_set_now(ts_start)

 #define cgsleep_prepare_r(ts_start) cgtimer_time(ts_start)

 void cgsleep_ms_r(cgtimer_t *ts_start, int ms);

-void (*cgsleep_us_r)(cgtimer_t *ts_start, int64_t us);

+extern void (*cgsleep_us_r)(cgtimer_t *ts_start, int64_t us);

 static inline

 int cgtimer_to_ms(cgtimer_t *cgt)