helpers: use // not / for division

[bup.git] / config / configure.inc

diff --git a/config/configure.inc b/config/configure.inc
index 2f293deb44f60eee7cb3e460ebdb53062798bb9f..c65b8f253055e45f90e2055c7bb41ad6a4c7446b 100644 (file)
--- a/config/configure.inc
+++ b/config/configure.inc
@@ -655,7 +655,7 @@ EOF
     AC_PROG_CPP
     AC_PROG_INSTALL
 
-    ac_os=`uname -s | sed 's/[-_].*//'`
+    ac_os=`uname -s | sed 's/[-_].*//; s/[^a-zA-Z0-9]/_/g'`
     _os=`echo $ac_os | tr '[a-z]' '[A-Z]'`
     AC_DEFINE OS_$_os  1
     eval OS_${_os}=1
@@ -1287,7 +1287,11 @@ AC_MAK() {
 #
 # AC_DEFINE adds a #define to config.h
 AC_DEFINE() {
-    echo "#define $1 ${2:-1}" >> $__cwd/config.h.tmp
+    local name="$1" value="${2:-1}"
+    if ! printf -v "ac_defined_$name" '%s' "$value"; then
+        AC_FATAL 'AC_DEFINE unable to set "ac_defined_$name" to "$value"'
+    fi
+    echo "#define $name $value" >> $__cwd/config.h.tmp
 }
 
 #