t/lex-depend-cxx.sh

   1 #! /bin/sh
   2 # Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17 # Test to make sure dependencies work with Lex/C++.
  18 # Test synthesized from PR automake/6.
  19
  20 required='c++ lex'
  21 . test-init.sh
  22
  23 cat >> configure.ac << 'END'
  24 AC_PROG_CXX
  25 AM_PROG_LEX
  26 AC_OUTPUT
  27 END
  28
  29 cat > Makefile.am << 'END'
  30 AM_LFLAGS = --never-interactive
  31
  32 noinst_PROGRAMS = joe moe
  33 joe_SOURCES = joe.ll
  34 moe_SOURCES = moe.l++
  35 LDADD = $(LEXLIB)
  36
  37 .PHONY: test-deps-exist
  38 test-deps-exist:
  39         ls -l $(DEPDIR) ;: For debugging.
  40         test -f $(DEPDIR)/joe.Po
  41         test -f $(DEPDIR)/moe.Po
  42
  43 .PHONY: test-obj-updated
  44 test-obj-updated: joe.$(OBJEXT) moe.$(OBJEXT)
  45         is_newest joe.$(OBJEXT) my-hdr.hxx
  46         is_newest moe.$(OBJEXT) my-hdr.hxx
  47 END
  48
  49 # For the explanation of the conditionals on using extern "C",
  50 # see https://debbugs.gnu.org/cgi/bugreport.cgi?bug=45205#13.
  51 cat > joe.ll << 'END'
  52 %{
  53 #define YY_DECL int yylex (void)
  54 #if (defined __cplusplus) && ((!defined __sun) || (defined __EXTERN_C__))
  55 extern "C"
  56 #endif
  57 YY_DECL;
  58 %}
  59 %%
  60 "foo" return EOF;
  61 .
  62 %%
  63 #include "my-hdr.hxx"
  64 int yywrap (void)
  65 {
  66   return 1;
  67 }
  68 int main (int argc, char **argv)
  69 {
  70   return 0;
  71 }
  72 END
  73
  74 cp joe.ll moe.l++
  75
  76 cat > my-hdr.hxx <<'END'
  77 // This header contains deliberately invalid C (but valid C++).
  78 using namespace std;
  79 END
  80
  81 $ACLOCAL
  82 $AUTOMAKE -a
  83
  84 $FGREP joe.Po Makefile.in
  85 $FGREP moe.Po Makefile.in
  86
  87 $AUTOCONF
  88 # Try to enable dependency tracking if possible, even if that means
  89 # using slow dependency extractors.
  90 ./configure --enable-dependency-tracking
  91
  92 # For debugging.
  93 for f in $(find . -name '*.Po'); do
  94   cat $f
  95 done
  96
  97 $MAKE test-deps-exist
  98 $MAKE
  99
 100 $sleep
 101 touch my-hdr.hxx
 102 $MAKE test-obj-updated
 103
 104 :