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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-04-30 22:18:47 -0600 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-05-03 20:08:55 -0600 |
| commit | 4685f980e24686a6b498602419a92c1d54478258 (patch) | |
| tree | d4d04935d8ef8acce07e5438afe82a5ae3e4442a | |
| parent | 1990cff56992c0984ae5d73989ba10aa26eae608 (diff) | |
compat: use bash instead of bc for HZ-->USEC calculation
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
| -rw-r--r-- | src/compat/Kbuild.include | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/src/compat/Kbuild.include b/src/compat/Kbuild.include index db20bd5..e937671 100644 --- a/src/compat/Kbuild.include +++ b/src/compat/Kbuild.include @@ -53,11 +53,7 @@ endif ifdef CONFIG_HZ ifeq ($(wildcard $(CURDIR)/include/generated/timeconst.h),) -HZ_IFDEF := $(shell echo 'define gcd(a,b){auto t;while(b){t=b;b=a%b;a=t;};return a;};hz=$(CONFIG_HZ);cd=gcd(hz,1000000);print "-DHZ_TO_USEC_NUM=",1000000/cd," -DHZ_TO_USEC_DEN=",hz/cd;halt;' | bc -q) -ifeq ($(HZ_IFDEF),) -$(error bc(1) is required for building) -endif -ccflags-y += $(HZ_IFDEF) +ccflags-y += $(shell bash -c '((a=$(CONFIG_HZ), b=1000000)); while ((b > 0)); do ((t=b, b=a%b, a=t)); done; echo "-DHZ_TO_USEC_NUM=$$((1000000/a)) -DHZ_TO_USEC_DEN=$$(($(CONFIG_HZ)/a))";') endif endif |