GNU Make 3.81 compatibility

3.81 doesn't understand the ‘define foo =’ syntax, which was added in
3.82.  So use ‘define foo’ instead.

install.mk

@@ -1,6 +1,6 @@
 # Add a rule for creating $(1) as a directory.  This template may be
 # called multiple times for the same directory.
-define create-dir =
+define create-dir
   ifndef $(1)_SEEN
     $(1)_SEEN = 1
     $(1):
@@ -11,7 +11,7 @@ endef
 
 # Add a rule for installing file $(1) as file $(2) with mode $(3).
 # The directory containing $(2) will be created automatically.
-define install-file-as =
+define install-file-as
 
   install: $(2)
 
@@ -25,23 +25,23 @@ endef
 
 # Add a rule for installing file $(1) in directory $(2) with mode
 # $(3).  The directory will be created automatically.
-define install-file-in =
+define install-file-in
   $$(eval $$(call install-file-as,$(1),$(2)/$$(notdir $(1)),$(3)))
 endef
 
 
-define install-program-in =
+define install-program-in
   $$(eval $$(call install-file-in,$(1),$(2),0755))
 endef
 
 
-define install-data-in =
+define install-data-in
   $$(eval $$(call install-file-in,$(1),$(2),0644))
 endef
 
 
 # Install a symlink from $(2) to $(1).  Note that $(1) need not exist.
-define install-symlink =
+define install-symlink
 
   install: $(2)
 

jars.mk

@@ -1,4 +1,4 @@
-define build-jar =
+define build-jar
   $(1)_NAME ?= $(1)
 
   _d := $$(strip $$($(1)_DIR))

lib.mk

@@ -60,7 +60,7 @@ include mk/tests.mk
 
 
 # Include all sub-Makefiles.
-define include-sub-makefile =
+define include-sub-makefile
   d := $$(patsubst %/,%,$$(dir $(1)))
   include $(1)
 endef

libraries.mk

@@ -38,7 +38,7 @@ endif
 #
 # - BUILD_SHARED_LIBS: if equal to ‘1’, a dynamic library will be
 #   built, otherwise a static library.
-define build-library =
+define build-library
   $(1)_NAME ?= $(1)
   _d := $$(strip $$($(1)_DIR))
   _srcs := $$(sort $$(foreach src, $$($(1)_SOURCES), $$(src)))

programs.mk

@@ -15,7 +15,7 @@ programs-list :=
 #
 # - $(1)_INSTALL_DIR: the directory where the program will be
 #   installed; defaults to $(bindir).
-define build-program =
+define build-program
   _d := $$($(1)_DIR)
   _srcs := $$(sort $$(foreach src, $$($(1)_SOURCES), $$(src)))
   $(1)_OBJS := $$(addsuffix .o, $$(basename $$(_srcs)))

templates.mk

@@ -2,7 +2,7 @@ template-files :=
 
 # Create the file $(1) from $(1).in by running config.status (which
 # substitutes all ‘@var@’ variables set by the configure script).
-define instantiate-template =
+define instantiate-template
 
   clean-files += $(1)
 

tests.mk

@@ -1,5 +1,5 @@
 # Run program $1 as part of ‘make installcheck’.
-define run-install-test =
+define run-install-test
 
   installcheck: $1