package/flex/0002-build-make-it-possible-to-disable-the-build-of-the-f.patch

   1 From da21733178b34eea303964db5a05e8a3ee4095b4 Mon Sep 17 00:00:00 2001
   2 From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   3 Date: Sat, 26 Aug 2017 15:17:06 +0200
   4 Subject: [PATCH] build: make it possible to disable the build of the flex
   5  program
   6
   7 The flex program uses fork(), which isn't available on noMMU
   8 systems. However, the libfl library does not use fork(), and be used
   9 by other programs/libraries.
  10
  11 Therefore, it makes sense to provide an option to disable the build of
  12 the flex program.
  13
  14 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
  15 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
  16
  17 ---
  18 Submitted-upstream: https://github.com/westes/flex/pull/256
  19 Refused. We'll have to adapt when they do a new release...
  20 ---
  21  Makefile.am     | 2 ++
  22  configure.ac    | 6 ++++++
  23  doc/Makefile.am | 4 ++++
  24  src/Makefile.am | 3 +++
  25  4 files changed, 15 insertions(+)
  26
  27 diff --git a/Makefile.am b/Makefile.am
  28 index e790e9d..8b57bc9 100644
  29 --- a/Makefile.am
  30 +++ b/Makefile.am
  31 @@ -62,8 +62,10 @@ ChangeLog: $(srcdir)/tools/git2cl
  32  indent:
  33         cd src && $(MAKE) $(AM_MAKEFLAGS) indent
  34
  35 +if ENABLE_PROGRAM
  36  install-exec-hook:
  37         cd $(DESTDIR)$(bindir) && \
  38                 $(LN_S) -f flex$(EXEEXT) flex++$(EXEEXT)
  39 +endif
  40
  41  .PHONY: ChangeLog indent
  42 diff --git a/configure.ac b/configure.ac
  43 index 8882016..f49872b 100644
  44 --- a/configure.ac
  45 +++ b/configure.ac
  46 @@ -75,6 +75,12 @@ AC_ARG_ENABLE([libfl],
  47    [], [enable_libfl=yes])
  48  AM_CONDITIONAL([ENABLE_LIBFL], [test "x$enable_libfl" = xyes])
  49
  50 +AC_ARG_ENABLE([program],
  51 +  [AS_HELP_STRING([--disable-program],
  52 +                  [do not build the flex program, only the libfl library])],
  53 +  [], [enable_program=yes])
  54 +AM_CONDITIONAL([ENABLE_PROGRAM], [test "x$enable_program" = xyes])
  55 +
  56  # --disable-bootstrap is intended only to workaround problems with bootstrap
  57  # (e.g. when cross-compiling flex or when bootstrapping has bugs).
  58  # Ideally we should be able to bootstrap even when cross-compiling.
  59 diff --git a/src/Makefile.am b/src/Makefile.am
  60 index 0d13a5a..c73bc17 100644
  61 --- a/src/Makefile.am
  62 +++ b/src/Makefile.am
  63 @@ -4,7 +4,10 @@ LIBS = @LIBS@
  64
  65  m4 = @M4@
  66
  67 +if ENABLE_PROGRAM
  68  bin_PROGRAMS = flex
  69 +endif
  70 +
  71  if ENABLE_BOOTSTRAP
  72  noinst_PROGRAMS = stage1flex
  73  endif
  74 --
  75 2.9.4
  76