Use Autoconf to generate the test module Makefile

This makes it easier to pass compilation flags around.

* configure.ac: Also build test module Makefile.

* test/data/emacs-module/Makefile.in: New makefile template.

* test/Makefile.in ($(test_module)): No longer necessary to pass
@MODULES_SUFFIX@ around.

* .gitignore: Test module Makefile can now be ignored.

4 files changed, 18 insertions, 14 deletions

diff --git a/.gitignore b/.gitignore
index 6dd21124e8c..1abefeb4326 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,7 +34,6 @@ InfoPlist.strings
 Makefile
 makefile
 !etc/refcards/Makefile
-!test/data/emacs-module/Makefile
 !test/lisp/progmodes/flymake-resources/Makefile
 !test/manual/etags/Makefile
 !test/manual/etags/make-src/Makefile
diff --git a/configure.ac b/configure.ac
index 164454dff30..b4faf8ea178 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5448,10 +5448,10 @@ dnl test/ is not present in release tarfiles.
 opt_makefile=test/Makefile
 
 if test -f "$srcdir/$opt_makefile.in"; then
-  SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
+  SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile test/data/emacs-module/Makefile"
   dnl Again, it's best not to use a variable.  Though you can add
   dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
-  AC_CONFIG_FILES([test/Makefile])
+  AC_CONFIG_FILES([test/Makefile test/data/emacs-module/Makefile])
 fi
 
 
diff --git a/test/Makefile.in b/test/Makefile.in
index 0c24c48e60e..13c0ac13f21 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -183,7 +183,7 @@ test_module_name := mod-test@MODULES_SUFFIX@
 test_module := $(test_module_dir)/$(test_module_name)
 $(srcdir)/src/emacs-module-tests.log: $(test_module)
 $(test_module): $(srcdir)/../src/emacs-module.[ch] $(test_module_dir)/mod-test.c
-        $(MAKE) -C $(test_module_dir) $(test_module_name) SO=@MODULES_SUFFIX@
+        $(MAKE) -C $(test_module_dir) $(test_module_name)
 endif
 
 ## Check that there is no 'automated' subdirectory, which would
diff --git a/test/data/emacs-module/Makefile b/test/data/emacs-module/Makefile.in
index bfeddb0472f..427d1aaa07c 100644
--- a/test/data/emacs-module/Makefile
+++ b/test/data/emacs-module/Makefile.in
@@ -1,3 +1,5 @@
+### @configure_input@
+
 # Test GNU Emacs modules.
 
 # Copyright 2015-2017 Free Software Foundation, Inc.
@@ -17,25 +19,28 @@
 # You should have received a copy of the GNU General Public License
 # along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
-ROOT = ../../..
+SHELL = @SHELL@
 
-CC      = gcc
-LD      = gcc
-LDFLAGS =
+top_srcdir = @top_srcdir@
+VPATH = $(srcdir)
+CC = @CC@
+CFLAGS = @CFLAGS@
+CPPFLAGS = @CPPFLAGS@
+SO = @MODULES_SUFFIX@
 
-# On MS-Windows, say "make SO=.dll" to build the module
-SO      = .so
 # -fPIC is a no-op on Windows, but causes a compiler warning
 ifeq ($(SO),.dll)
-CFLAGS  = -std=c11 -ggdb3 -Wall
+FPIC_CFLAGS =
 else
-CFLAGS  = -std=c11 -ggdb3 -Wall -fPIC
+FPIC_CFLAGS = -fPIC
 endif
 
 all: mod-test$(SO)
 
 %$(SO): %.o
-        $(LD) -shared $(LDFLAGS) -o $@ $<
+        $(CC) -shared $(LDFLAGS) -o $@ $<
 
 %.o: %.c
-        $(CC) $(CFLAGS) -I$(ROOT)/src -c $<
+        $(CC) $(CPPFLAGS) $(CFLAGS) $(FPIC_CFLAGS) -I$(top_srcdir)/src -c -o $@ $<
+
+%.o: $(srcdir)/emacs-module.[ch]