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authorJoel Sherrill <joel.sherrill@OARcorp.com>1998-02-04 14:54:27 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1998-02-04 14:54:27 +0000
commit6c77bbab3977d70c7a7247061e2ee4ae1df3dccb (patch)
treeebef5c1b453dd5424690063249fbc703ff818e75 /Makefile.in
parent77ea27fc1669d8e228970d8905814315a4c32e3c (diff)
downloadrtems-6c77bbab3977d70c7a7247061e2ee4ae1df3dccb.tar.bz2
New autoconf feature from Ralf Corsepius:
It adds make rules for reconfiguring build-trees ("make Makefile") and adds dependency rules for configure and friends (i.e. calls autoconf). Most of this code has been "borrowed" from automake and was adapted to rtems. Addionally, I added automatic generation of the "aclocal.m4"-file by "aclocal" (from the automake package). Therefore I splitted aclocal.m4 into several separate files (attached to this mail), each containing one of rtems customized autoconf/m4-macros and have put them into a new subdirectory "aclocal". Normal users won't be influenced and won't even need this, unless they try to modify configure.in. The main advantage of this is: these aclocal/m4-macros become reusable and easier to administer. As a disadvantage, rtems becomes dependent of having aclocal/automake installed. To keep building rtems functional if autoconf or aclocal isn't installed, the related Makefile commands are prefixed by "-" -- only an error message should be issued by "make".
Diffstat (limited to 'Makefile.in')
-rw-r--r--Makefile.in22
1 files changed, 22 insertions, 0 deletions
diff --git a/Makefile.in b/Makefile.in
index 61a8f0a95f..95d3c28ffb 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -49,3 +49,25 @@ $(MTARGETS):
$@" ; \
eval $$cmd || $(EXIT_CMD); \
fi; done;
+
+## Configuration stuff
+
+ACLOCAL = aclocal -I aclocal
+AUTOCONF = autoconf
+
+ACLOCAL_M4 = aclocal.m4
+
+$(ACLOCAL_M4): configure.in
+ -cd $(RTEMS_ROOT) && $(ACLOCAL)
+
+Makefile: Makefile.in config.status
+ CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+config.status: $(RTEMS_ROOT)/configure
+ $(SHELL) ./config.status --recheck
+
+$(RTEMS_ROOT)/configure: $(RTEMS_ROOT)/configure.in $(ACLOCAL_M4)
+ -cd $(RTEMS_ROOT) && $(AUTOCONF)
+
+.PRECIOUS: $(ACLOCAL_M4) configure Makefile config.status
+