+# We place all implementations in static libraries, and then let the
+# provider mains pilfer what they want through symbol resolution when
+# linking.
+#
+# The non-legacy implementations (libimplementations) must be made FIPS
+# agnostic as much as possible, as well as the common building blocks
+# (libcommon). The legacy implementations (liblegacy) will never be
+# part of the FIPS provider.
+#
+# If there is anything that isn't FIPS agnostic, it should be set aside
+# in its own source file, which is then included directly into other
+# static libraries geared for FIPS and non-FIPS providers, and built
+# separately.
+#
+# libcommon.a Contains common building blocks, potentially
+# needed both by non-legacy and legacy code.
+#
+# libimplementations.a Contains all non-legacy implementations.
+# liblegacy.a Contains all legacy implementations.
+#
+# libfips.a Contains all things needed to support
+# FIPS implementations, such as code from
+# crypto/ and object files that contain
+# FIPS-specific code. FIPS_MODE is defined
+# for this library. The FIPS module uses
+# this.
+# libnonfips.a Corresponds to libfips.a, but built with
+# FIPS_MODE undefined. The default and legacy
+# providers use this.
+
+SUBDIRS=common implementations
+
+INCLUDE[../libcrypto]=common/include
+
+# Libraries we're dealing with
+$LIBCOMMON=libcommon.a
+$LIBIMPLEMENTATIONS=libimplementations.a
+$LIBLEGACY=liblegacy.a
+$LIBNONFIPS=libnonfips.a
+$LIBFIPS=libfips.a
+
+# Enough of our implementations include prov/ciphercommon.h (present in
+# providers/implementations/include), which includes crypto/*_platform.h
+# (present in include), which in turn may include very internal header
+# files in crypto/, so let's have a common include list for them all.
+$COMMON_INCLUDES=../crypto ../include implementations/include common/include
+
+INCLUDE[$LIBCOMMON]=$COMMON_INCLUDES
+INCLUDE[$LIBIMPLEMENTATIONS]=.. $COMMON_INCLUDES
+INCLUDE[$LIBLEGACY]=$COMMON_INCLUDES
+INCLUDE[$LIBNONFIPS]=$COMMON_INCLUDES
+INCLUDE[$LIBFIPS]=.. $COMMON_INCLUDES
+DEFINE[$LIBFIPS]=FIPS_MODE
+
+# Weak dependencies to provide library order information.
+# We make it weak so they aren't both used always; what is
+# actually used is determined by non-weak dependencies.
+DEPEND[$LIBIMPLEMENTATIONS]{weak}=$LIBFIPS $LIBNONFIPS
+DEPEND[$LIBCOMMON]{weak}=$LIBFIPS
+
+# Strong dependencies. This ensures that any time libimplementations
+# is used, libcommon gets included as well.
+DEPEND[$LIBIMPLEMENTATIONS]=$LIBCOMMON
+DEPEND[$LIBNONFIPS]=../libcrypto
+# It's tempting to make libcommon depend on ../libcrypto. However,
+# since the FIPS provider module must NOT depend on ../libcrypto, we
+# need to set that dependency up specifically for the final products
+# that use $LIBCOMMON or anything that depends on it.
+
+# Libraries common to all providers, must be built regardless
+LIBS{noinst}=$LIBCOMMON
+# Libraries that are common for all non-FIPS providers, must be built regardless
+LIBS{noinst}=$LIBNONFIPS $LIBIMPLEMENTATIONS
+
+#
+# Default provider stuff
+#
+# Because the default provider is built in, it means that libcrypto must
+# include all the object files that are needed (we do that indirectly,
+# by using the appropriate libraries as source). Note that for shared
+# libraries, SOURCEd libraries are considered as if the where specified
+# with DEPEND.
+$DEFAULTGOAL=../libcrypto
+SOURCE[$DEFAULTGOAL]=$LIBIMPLEMENTATIONS $LIBNONFIPS
+SOURCE[$DEFAULTGOAL]=defltprov.c
+# Some legacy implementations depend on provider header files
+INCLUDE[$DEFAULTGOAL]=implementations/include
+
+LIBS=$DEFAULTGOAL
+
+#
+# FIPS provider stuff
+#
+# We define it this way to ensure that configdata.pm will have all the
+# necessary information even if we don't build the module. This will allow
+# us to make all kinds of checks on the source, based on what we specify in
+# diverse build.info files. libfips.a, fips.so and their sources aren't
+# built unless the proper LIBS or MODULES statement has been seen, so we
+# have those and only those within a condition.
+SUBDIRS=fips
+$FIPSGOAL=fips
+DEPEND[$FIPSGOAL]=$LIBIMPLEMENTATIONS $LIBFIPS
+INCLUDE[$FIPSGOAL]=../include
+DEFINE[$FIPSGOAL]=FIPS_MODE
+IF[{- defined $target{shared_defflag} -}]
+ SOURCE[$FIPSGOAL]=fips.ld
+ GENERATE[fips.ld]=../util/providers.num
+ENDIF