new file mode 100644
@@ -0,0 +1,61 @@
+From 29ba834ed7d968de0460f7fd87156d43d8120d8f Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Wed, 18 Sep 2019 09:28:49 -0700
+Subject: [PATCH] date: Use 64 prefix syscall if we have to
+
+Some 32-bit architectures no longer have the 32-bit time_t syscalls.
+Instead they have suffixed syscalls that returns a 64-bit time_t. If
+the architecture doesn't have the non-suffixed syscall and is using a
+64-bit time_t let's use the suffixed syscall instead.
+
+This fixes build issues when building for RISC-V 32-bit with 5.1+ kernel
+headers.
+
+If an architecture only supports the suffixed syscalls, but is still
+using a 32-bit time_t fall back to the libc call.
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+
+(cherry picked from commit b7b7452f292f03eefafa6fd1da9bcfc933dee15a)
+
+Signed-off-by: Carlos Santos <unixmania@gmail.com>
+---
+ coreutils/date.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/coreutils/date.c b/coreutils/date.c
+index 3414d38ae..1e0a675ca 100644
+--- a/coreutils/date.c
++++ b/coreutils/date.c
+@@ -36,7 +36,7 @@
+ //config:# defaults to "no": stat's nanosecond field is a bit non-portable
+ //config:config FEATURE_DATE_NANO
+ //config: bool "Support %[num]N nanosecond format specifier"
+-//config: default n # syscall(__NR_clock_gettime)
++//config: default n # syscall(__NR_clock_gettime) or syscall(__NR_clock_gettime64)
+ //config: depends on DATE
+ //config: select PLATFORM_LINUX
+ //config: help
+@@ -271,10 +271,17 @@ int date_main(int argc UNUSED_PARAM, char **argv)
+ */
+ #endif
+ } else {
+-#if ENABLE_FEATURE_DATE_NANO
++#if ENABLE_FEATURE_DATE_NANO && defined(__NR_clock_gettime)
+ /* libc has incredibly messy way of doing this,
+ * typically requiring -lrt. We just skip all this mess */
+ syscall(__NR_clock_gettime, CLOCK_REALTIME, &ts);
++#elif ENABLE_FEATURE_DATE_NANO && __TIMESIZE == 64
++ /* Let's only support the 64 suffix syscalls for 64-bit time_t.
++ * This simplifies the code for us as we don't need to convert
++ * between 64-bit and 32-bit. We also don't have a way to
++ * report overflow errors here.
++ */
++ syscall(__NR_clock_gettime64, CLOCK_REALTIME, &ts);
+ #else
+ time(&ts.tv_sec);
+ #endif
+--
+2.18.2
+
new file mode 100644
@@ -0,0 +1,50 @@
+From 88732c5593e16ef6177f6e6110132ed69b06d2eb Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Wed, 18 Sep 2019 09:28:50 -0700
+Subject: [PATCH] time: Use 64 prefix syscall if we have to
+
+Some 32-bit architectures no longer have the 32-bit time_t syscalls.
+Instead they have suffixed syscalls that returns a 64-bit time_t. If
+the architecture doesn't have the non-suffixed syscall and is using a
+64-bit time_t let's use the suffixed syscall instead.
+
+This fixes build issues when building for RISC-V 32-bit with 5.1+ kernel
+headers.
+
+If an architecture only supports the suffixed syscalls, but is still
+using a 32-bit time_t report a compilation error. This avoids us have to
+deal with converting between 64-bit and 32-bit values. There are
+currently no architectures where this is the case.
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+
+(cherry picked from commit 902d3992922fc8db8495d5fb30a4581711b60c62)
+
+Signed-off-by: Carlos Santos <unixmania@gmail.com>
+---
+ libbb/time.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/libbb/time.c b/libbb/time.c
+index f9b8da0b3..821f9a24b 100644
+--- a/libbb/time.c
++++ b/libbb/time.c
+@@ -257,7 +257,14 @@ char* FAST_FUNC strftime_YYYYMMDDHHMMSS(char *buf, unsigned len, time_t *tp)
+ * typically requiring -lrt. We just skip all this mess */
+ static void get_mono(struct timespec *ts)
+ {
++#if defined(__NR_clock_gettime)
+ if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, ts))
++#elif __TIMESIZE == 64
++ if (syscall(__NR_clock_gettime64, CLOCK_MONOTONIC, ts))
++#else
++# error "We currently don't support architectures without " \
++ "the __NR_clock_gettime syscall and 32-bit time_t"
++#endif
+ bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
+ }
+ unsigned long long FAST_FUNC monotonic_ns(void)
+--
+2.18.2
+
new file mode 100644
@@ -0,0 +1,50 @@
+From 8f4b588eb9737c2c0d1b199c7e609d880e0858a8 Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Wed, 18 Sep 2019 09:28:51 -0700
+Subject: [PATCH] runsv: Use 64 prefix syscall if we have to
+
+Some 32-bit architectures no longer have the 32-bit time_t syscalls.
+Instead they have suffixed syscalls that returns a 64-bit time_t. If
+the architecture doesn't have the non-suffixed syscall and is using a
+64-bit time_t let's use the suffixed syscall instead.
+
+This fixes build issues when building for RISC-V 32-bit with 5.1+ kernel
+headers.
+
+If an architecture only supports the suffixed syscalls, but is still
+using a 32-bit time_t report a compilation error. This avoids us have to
+deal with converting between 64-bit and 32-bit values. There are
+currently no architectures where this is the case.
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+
+(cherry picked from commit ad27d44ebe950335616f37e36863469dc181b455)
+
+Signed-off-by: Carlos Santos <unixmania@gmail.com>
+---
+ runit/runsv.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/runit/runsv.c b/runit/runsv.c
+index ccc762d78..737909b0e 100644
+--- a/runit/runsv.c
++++ b/runit/runsv.c
+@@ -55,7 +55,14 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * typically requiring -lrt. We just skip all this mess */
+ static void gettimeofday_ns(struct timespec *ts)
+ {
++#if defined(__NR_clock_gettime)
+ syscall(__NR_clock_gettime, CLOCK_REALTIME, ts);
++#elif __TIMESIZE == 64
++ syscall(__NR_clock_gettime64, CLOCK_REALTIME, ts);
++#else
++# error "We currently don't support architectures without " \
++ "the __NR_clock_gettime syscall and 32-bit time_t"
++#endif
+ }
+ #else
+ static void gettimeofday_ns(struct timespec *ts)
+--
+2.18.2
+
new file mode 100644
@@ -0,0 +1,134 @@
+From 07375fc6fd5912f34a36a097dc679f6e0af23f8a Mon Sep 17 00:00:00 2001
+From: Denys Vlasenko <vda.linux@googlemail.com>
+Date: Thu, 24 Oct 2019 16:26:55 +0200
+Subject: [PATCH] Remove syscall wrappers around clock_gettime, closes 12091
+
+12091 "Direct use of __NR_clock_gettime is not time64-safe".
+
+function old new delta
+runsv_main 1698 1712 +14
+startservice 378 383 +5
+get_mono 31 25 -6
+date_main 932 926 -6
+gettimeofday_ns 17 - -17
+------------------------------------------------------------------------------
+(add/remove: 0/1 grow/shrink: 2/2 up/down: 19/-29) Total: -10 bytes
+
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+
+(cherry picked from commit be5a505d771a77c640acc35ceaa470c80e62f954)
+
+Signed-off-by: Carlos Santos <unixmania@gmail.com>
+---
+ Makefile.flags | 6 ++++--
+ coreutils/date.c | 16 +++-------------
+ libbb/time.c | 11 +----------
+ runit/runsv.c | 11 +----------
+ 4 files changed, 9 insertions(+), 35 deletions(-)
+
+diff --git a/Makefile.flags b/Makefile.flags
+index 6f6142cc5..bea464753 100644
+--- a/Makefile.flags
++++ b/Makefile.flags
+@@ -129,10 +129,12 @@ endif
+ # fall back to using a temp file:
+ CRYPT_AVAILABLE := $(shell echo 'int main(void){return 0;}' >crypttest.c; $(CC) $(CFLAGS) -lcrypt -o /dev/null crypttest.c >/dev/null 2>&1 && echo "y"; rm crypttest.c)
+ ifeq ($(CRYPT_AVAILABLE),y)
+-LDLIBS += m crypt
++LDLIBS += m rt crypt
+ else
+-LDLIBS += m
++LDLIBS += m rt
+ endif
++# libm may be needed for dc, awk, ntpd
++# librt may be needed for clock_gettime()
+
+ # libpam may use libpthread, libdl and/or libaudit.
+ # On some platforms that requires an explicit -lpthread, -ldl, -laudit.
+diff --git a/coreutils/date.c b/coreutils/date.c
+index 1e0a675ca..e479c23a2 100644
+--- a/coreutils/date.c
++++ b/coreutils/date.c
+@@ -33,10 +33,9 @@
+ //config: Enable option (-I) to output an ISO-8601 compliant
+ //config: date/time string.
+ //config:
+-//config:# defaults to "no": stat's nanosecond field is a bit non-portable
+ //config:config FEATURE_DATE_NANO
+ //config: bool "Support %[num]N nanosecond format specifier"
+-//config: default n # syscall(__NR_clock_gettime) or syscall(__NR_clock_gettime64)
++//config: default n # stat's nanosecond field is a bit non-portable
+ //config: depends on DATE
+ //config: select PLATFORM_LINUX
+ //config: help
+@@ -271,17 +270,8 @@ int date_main(int argc UNUSED_PARAM, char **argv)
+ */
+ #endif
+ } else {
+-#if ENABLE_FEATURE_DATE_NANO && defined(__NR_clock_gettime)
+- /* libc has incredibly messy way of doing this,
+- * typically requiring -lrt. We just skip all this mess */
+- syscall(__NR_clock_gettime, CLOCK_REALTIME, &ts);
+-#elif ENABLE_FEATURE_DATE_NANO && __TIMESIZE == 64
+- /* Let's only support the 64 suffix syscalls for 64-bit time_t.
+- * This simplifies the code for us as we don't need to convert
+- * between 64-bit and 32-bit. We also don't have a way to
+- * report overflow errors here.
+- */
+- syscall(__NR_clock_gettime64, CLOCK_REALTIME, &ts);
++#if ENABLE_FEATURE_DATE_NANO
++ clock_gettime(CLOCK_REALTIME, &ts);
+ #else
+ time(&ts.tv_sec);
+ #endif
+diff --git a/libbb/time.c b/libbb/time.c
+index 821f9a24b..1077bfa4f 100644
+--- a/libbb/time.c
++++ b/libbb/time.c
+@@ -253,18 +253,9 @@ char* FAST_FUNC strftime_YYYYMMDDHHMMSS(char *buf, unsigned len, time_t *tp)
+ #define CLOCK_MONOTONIC 1
+ #endif
+
+-/* libc has incredibly messy way of doing this,
+- * typically requiring -lrt. We just skip all this mess */
+ static void get_mono(struct timespec *ts)
+ {
+-#if defined(__NR_clock_gettime)
+- if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, ts))
+-#elif __TIMESIZE == 64
+- if (syscall(__NR_clock_gettime64, CLOCK_MONOTONIC, ts))
+-#else
+-# error "We currently don't support architectures without " \
+- "the __NR_clock_gettime syscall and 32-bit time_t"
+-#endif
++ if (clock_gettime(CLOCK_MONOTONIC, ts))
+ bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
+ }
+ unsigned long long FAST_FUNC monotonic_ns(void)
+diff --git a/runit/runsv.c b/runit/runsv.c
+index 737909b0e..36d85101e 100644
+--- a/runit/runsv.c
++++ b/runit/runsv.c
+@@ -51,18 +51,9 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ #if ENABLE_MONOTONIC_SYSCALL
+ #include <sys/syscall.h>
+
+-/* libc has incredibly messy way of doing this,
+- * typically requiring -lrt. We just skip all this mess */
+ static void gettimeofday_ns(struct timespec *ts)
+ {
+-#if defined(__NR_clock_gettime)
+- syscall(__NR_clock_gettime, CLOCK_REALTIME, ts);
+-#elif __TIMESIZE == 64
+- syscall(__NR_clock_gettime64, CLOCK_REALTIME, ts);
+-#else
+-# error "We currently don't support architectures without " \
+- "the __NR_clock_gettime syscall and 32-bit time_t"
+-#endif
++ clock_gettime(CLOCK_REALTIME, ts);
+ }
+ #else
+ static void gettimeofday_ns(struct timespec *ts)
+--
+2.18.2
+