Add explicit Build-Depends on libfl-dev

LilyPond needs /usr/include/FlexLexer.h from libfl-dev,
but flex dependency on libfl-dev has been demoted to Recommends
since flex (2.6.1-1.1) dated 2016-11-24.

diff --git a/debian/control b/debian/control
index 8b541ad70b6a86eba30b1322b41b6fba7e095556..e95abd0d0f0b4dc9f9622773c3df99edadb506c4 100644 (file)
--- a/debian/control
+++ b/debian/control
@@ -1,7 +1,7 @@
 Source: lilypond
 Build-Depends: debhelper (>= 9), quilt, python-all-dev (>= 2.6.6-3~), dh-python,
  guile-1.8-dev,
- flex, bison, texinfo, groff, m4, gettext, mftrace, fontforge,
+ libfl-dev, flex, bison, texinfo, groff, m4, gettext, mftrace, fontforge,
  pkg-config, libfreetype6-dev, libpango1.0-dev,
  libfontconfig1-dev, help2man,
  ghostscript, texlive-latex-base, texlive-generic-recommended,