Sync 4.next from master

[users/jgh/exim.git] / src / Makefile

diff --git a/src/Makefile b/src/Makefile
index adda7ceb3359d6f8bb27d9879c99e9275dff0895..2a100bbddede0862ca3ec1597df5fb5d4f841aba 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -19,8 +19,14 @@ RM_COMMAND=/bin/rm
 # provide an override for the OS type and architecture type; they still have
 # to be used for the OS-specific files. To override them, you can set the
 # shell variables OSTYPE and ARCHTYPE when running make.
+#
+# EXIM_BUILD_SUFFIX should be used to enable parallel builds on a file
+# system shared among different Linux distros (same os-type, same
+# arch-type). The ../test/runtest script is expected to honour the
+# EXIM_BUILD_SUFFIX when searching the Exim binary.
+# NOTE: EXIM_BUILD_SUFFIX is considered *experimental*.
 
-buildname=$${build:-`$(SHELL) scripts/os-type`-`$(SHELL) scripts/arch-type`}
+buildname=$${build:-`$(SHELL) scripts/os-type`-`$(SHELL) scripts/arch-type`}$${EXIM_BUILD_SUFFIX:+.$$EXIM_BUILD_SUFFIX}
 
 # The default target checks for the existence of Local/Makefile, that the main
 # makefile is built and up-to-date, and then it runs it.
@@ -29,7 +35,7 @@ all: Local/Makefile configure
        @cd build-$(buildname); $(MAKE) SHELL=$(SHELL) $(MFLAGS)
 
 
-# This pair for the convinience of of the Debian maintainers
+# This pair for the convenience of of the Debian maintainers
 exim: Local/Makefile configure
        @cd build-$(buildname); $(MAKE) SHELL=$(SHELL) $(MFLAGS) exim
 utils: Local/Makefile configure