Sync 4.next from master

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

diff --git a/src/Makefile b/src/Makefile
index adda7ceb3359d6f8bb27d9879c99e9275dff0895..ccaca1c13ca8a71f8d57904885d11e6cb073c7fd 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.
-
-buildname=$${build:-`$(SHELL) scripts/os-type`-`$(SHELL) scripts/arch-type`}
+#
+# EXIM_BUILD_SUFFIX should be used to enable parallel builds on a file
+# system shared among different Linux distros (same os-type, same
+# arch-type). The ../test/runtest script is expected to honour the
+# EXIM_BUILD_SUFFIX when searching the Exim binary.
+# NOTE: EXIM_BUILD_SUFFIX is considered *experimental*.
+
+buildname=$${build:-`$(SHELL) scripts/os-type`-`$(SHELL) scripts/arch-type`}$${EXIM_BUILD_SUFFIX:+.$$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.