diff --git a/util/manibuilder/Makefile b/util/manibuilder/Makefile
index 5611de8..3ae1e15 100644
--- a/util/manibuilder/Makefile
+++ b/util/manibuilder/Makefile
@@ -16,6 +16,7 @@
 
 ident = $(subst /,_,$(subst :,_,$(subst \:,_,$(1))))
 
+include Makefile.env
 include Makefile.anita
 
 # $(1): mani tag
@@ -45,14 +46,6 @@
 	[ $$(docker image ls -q mani/$*) ] \
 		|| $(MAKE) $*-build $(if $(QUIET_SETUP),>/dev/null 2>/dev/null)
 
-$(ALMALINUX_TAGS) $(filter centos%,$(MULTIARCH_TAGS)): CC=cc
-djgpp\:6.1.0: CC=ccache i586-pc-msdosdjgpp-gcc
-djgpp\:6.1.0: STRIP=i586-pc-msdosdjgpp-strip
-djgpp\:6.1.0: LIBS_BASE=../
-djgpp\:6.1.0: MAKEARGS+=strip CONFIG_JLINK_SPI=no
-$(filter alpine% centos%,$(MULTIARCH_TAGS)): MAKEARGS+=CONFIG_JLINK_SPI=no
-$(filter %-xenial %-stretch,$(MULTIARCH_TAGS)): MAKEARGS+=CONFIG_JLINK_SPI=no
-$(filter centos%,$(MULTIARCH_TAGS)): MAKEARGS+=WARNERROR=no
 $(ALL_TAGS): export QUIET_SETUP=$(QUIET_TEST)
 $(ALL_TAGS): export TEST_REMOTE?=$(if $(TEST_LOCAL),\
 					git://mani-git/flashrom.git,\
diff --git a/util/manibuilder/Makefile.env b/util/manibuilder/Makefile.env
new file mode 100644
index 0000000..6a352f3
--- /dev/null
+++ b/util/manibuilder/Makefile.env
@@ -0,0 +1,15 @@
+# No ccache
+$(ALMALINUX_TAGS) $(filter centos\:%, $(MULTIARCH_TAGS)): CC=cc
+
+# DJGPP is very special
+djgpp\:6.1.0: CC=ccache i586-pc-msdosdjgpp-gcc
+djgpp\:6.1.0: STRIP=i586-pc-msdosdjgpp-strip
+djgpp\:6.1.0: LIBS_BASE=../
+djgpp\:6.1.0: MAKEARGS+=strip CONFIG_JLINK_SPI=no
+
+# Compiler doesn't like simplified initializers, e.g. `= { 0 };`
+$(filter centos\:%, $(MULTIARCH_TAGS)): MAKEARGS+=WARNERROR=no
+
+# No libjaylink
+$(filter alpine\:% centos\:%, $(MULTIARCH_TAGS)): MAKEARGS+=CONFIG_JLINK_SPI=no
+$(filter %-xenial %-stretch, $(MULTIARCH_TAGS)): MAKEARGS+=CONFIG_JLINK_SPI=no