[PATCH 02/11] build: don't list files with unknown suffix in _SOURCES

[Stefano Lattarini]

While this works with mainline Automake (which blindly treats source
files with an unknown extension as if they were header files), it is
undocumented (albeit admittedly unlikely to change).  Moreover, it no
longer works with Automake-NG (and that's by design), so the use of
such feature would make a port to Automake-NG more difficult.

* libparted/labels/Makefile.am (liblabels_la_SOURCES): ... don't
list 'pt-limit.gperf' here; rather ...
(EXTRA_DIST): ... list 'pt-limit.c' and 'pt-limit.gperf' here.
(EXTRA_DIST, BUILT_SOURCES): Enhance few comments.

Copyright-paperwork-exempt: yes
---
 libparted/labels/Makefile.am | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libparted/labels/Makefile.am b/libparted/labels/Makefile.am
index ec8abeb..f4e4d27 100644
--- a/libparted/labels/Makefile.am
+++ b/libparted/labels/Makefile.am
@@ -39,10 +39,11 @@ liblabels_la_LIBADD = $(OS_LIBS) $(INTLLIBS)
 
 AM_CPPFLAGS = $(partedincludedir) $(INTLINCS)
 
+# Included by 'pt-tools.c', so needs to be built early.
 BUILT_SOURCES = pt-limit.c
 MAINTAINERCLEANFILES = $(BUILT_SOURCES)
-liblabels_la_SOURCES += pt-limit.gperf
-EXTRA_DIST = $(BUILT_SOURCES)
+# DOn't add this to '_SOURCES', because it's not to be compiled!
+EXTRA_DIST= pt-limit.c
 
 GPERF = gperf
 GPERF_OPTIONS = \
@@ -55,3 +56,4 @@ pt-limit.c: pt-limit.gperf
          > address@hidden
        chmod a-w address@hidden
        mv address@hidden $@
+EXTRA_DIST += pt-limit.gperf