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tools/gpio: Fix build error with musl libc
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The GPIO tools build fails when using a buildroot toolchain that uses musl
as it's C library:

arm-broomstick-linux-musleabi-gcc -Wp,-MD,./.gpio-event-mon.o.d \
 -Wp,-MT,gpio-event-mon.o -O2 -Wall -g -D_GNU_SOURCE \
 -Iinclude -D"BUILD_STR(s)=#s" -c -o gpio-event-mon.o gpio-event-mon.c
gpio-event-mon.c:30:6: error: unknown type name ‘u_int32_t’; did you mean ‘uint32_t’?
      u_int32_t handleflags,
      ^~~~~~~~~
      uint32_t

The glibc headers installed on my laptop include sys/types.h in
unistd.h, but it appears that musl does not.

Fixes: 97f6974 ("tools/gpio: add the gpio-event-mon tool")
Cc: [email protected]
Signed-off-by: Joel Stanley <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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shenki authored and linusw committed Dec 21, 2017
1 parent 93ebe86 commit 1696784
Showing 1 changed file with 1 addition and 0 deletions.
1 change: 1 addition & 0 deletions tools/gpio/gpio-event-mon.c
Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
#include <getopt.h>
#include <inttypes.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <linux/gpio.h>

int monitor_device(const char *device_name,
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