Workaround for broken (or missing) bc.

1 files changed, 23 insertions, 0 deletions

diff --git a/test/bctest b/test/bctest
new file mode 100755
index 0000000000..2365152439
--- /dev/null
+++ b/test/bctest
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+if [ 0 != "`bc <<\EOF
+obase=16
+ibase=16
+a=AD88C418F31B3FC712D0425001D522B3AE9134FF3A98C13C1FCC1682211195406C1A6C66C6A\
+CEEC1A0EC16950233F77F1C2F2363D56DD71A36C57E0B2511FC4BA8F22D261FE2E9356D99AF57\
+10F3817C0E05BF79C423C3F66FDF321BE8D3F18F625D91B670931C1EF25F28E489BDA1C5422D1\
+C3F6F7A1AD21585746ECC4F10A14A778AF56F08898E965E9909E965E0CB6F85B514150C644759\
+3BE731877B16EA07B552088FF2EA728AC5E0FF3A23EB939304519AB8B60F2C33D6BA0945B66F0\
+4FC3CADF855448B24A9D7640BCF473E
+b=DCE91E7D120B983EA9A104B5A96D634DD644C37657B1C7860B45E6838999B3DCE5A555583C6\
+9209E41F413422954175A06E67FFEF6746DD652F0F48AEFECC3D8CAC13523BDAAD3F5AF4212BD\
+8B3CD64126E1A82E190228020C05B91C8B141F1110086FC2A4C6ED631EBA129D04BB9A19FC53D\
+3ED0E2017D60A68775B75481449
+(a/b)*b + (a%b) - a
+EOF`" ]
+then
+  echo "bc does not work.  Consider installing GNU bc." >&2
+  exit 1
+else
+  exit 0
+fi