%makeinstall_std
rm -f %{?buildroot:%{buildroot}}/%{_bindir}/kdcraw

from log:
[...]
+ make prefix=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr exec_pre
fix=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr bindir=/home/anase
lli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/bin sbindir=/home/anaselli/SVN/li
bkdcraw/BUILDROOT/libkdcraw-root/usr/sbin sysconfdir=/home/anaselli/SVN/libkdcra
w/BUILDROOT/libkdcraw-root/etc datadir=/home/anaselli/SVN/libkdcraw/BUILDROOT/li
bkdcraw-root/usr/share includedir=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcr
aw-root/usr/include libdir=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root
/usr/lib64 libexecdir=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/
lib64 localstatedir=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/var/li
b sharedstatedir=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/com m
andir=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/share/man infodi
r=/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/share/info install
Making install in libkdcraw
[...]
make[3]: Entering directory `/home/anaselli/SVN/libkdcraw/BUILD/libkdcraw-0.1.1/
libkdcraw/dcraw'
test -z "/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/bin" || /bin/mkdir -p "/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/bin"
  /bin/sh ../../libtool --silent --mode=install /usr/bin/install -c -p  'kdcraw' '/home/anaselli/SVN/libkdcraw/BUILDROOT/libkdcraw-root/usr/bin/kdcraw'