# GNU defaults
prefix ?= /usr/local
datarootdir ?= $(prefix)/share
+exec_prefix ?= $(prefix)
libdir ?= $(exec_prefix)/lib
A2_INSTALL_TARGET ?= $(DESTDIR)$(datarootdir)/a2
TARGET_ARCH_CATEGORY_PREFIX=$(TARGET_OS_CATEGORY_PREFIX)/$(TARGET_ARCH)
PORTABLE_CATEGORIES=$(filter-out lib/%, $(CATEGORIES))
ARCH_CATEGORIES=$(filter $(TARGET_ARCH_CATEGORY_PREFIX)/%, $(CATEGORIES))
-OS_CATEGORIES=$(filter-out $(foreach arch, $(KNOWN_ARCHS), $(TARGET_OS_CATEGORY_PREFIX)/$(arch)), $(filter $(TARGET_OS_CATEGORY_PREFIX)/%, $(CATEGORIES)))
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+OS_CATEGORIES=$(filter-out $(foreach arch, $(KNOWN_ARCHS), $(TARGET_OS_CATEGORY_PREFIX)/$(arch)/%), $(filter $(TARGET_OS_CATEGORY_PREFIX)/%, $(CATEGORIES)))
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