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+#=========================================================================
+# Toplevel configure.ac for the Modular C++ Build System
+#=========================================================================
+# Please read the documenation in 'mcppbs-doc.txt' for more details on
+# how the Modular C++ Build System works. For most new projects, a
+# developer will only need to make the following changes:
+#
+#  - change the project metadata listed right below
+#  - update the list of subprojects via the 'MCPPBS_SUBPROJECTS' macro
+#  - possibly add subproject groups if needed to ease configuration
+#  - add more configure checks for platform specific configuration
+#
+
+#-------------------------------------------------------------------------
+# Project metadata
+#-------------------------------------------------------------------------
+
+m4_define( proj_name,         [RISC-V ISA Simulator])
+m4_define( proj_maintainer,   [Andrew Waterman])
+m4_define( proj_abbreviation, [riscv-isa-run])
+
+#-------------------------------------------------------------------------
+# Project version information
+#-------------------------------------------------------------------------
+# Version information is meant to be managed through a version control
+# system's tags and revision numbers. In a working copy the version will
+# not be defined here (you should just use the version control system's
+# mechanisms). When we make a distribution then we can set the version
+# here as formed by the scripts/vcs-version.sh script so that the
+# distribution knows what version it came from. If you are not using
+# version control then it is fine to set this directly.
+
+m4_define( proj_version, [?])
+
+#-------------------------------------------------------------------------
+# Setup
+#-------------------------------------------------------------------------
+
+AC_INIT(proj_name,proj_version,proj_maintainer,proj_abbreviation)
+AC_CONFIG_SRCDIR([riscv/common.h])
+AC_CONFIG_AUX_DIR([scripts])
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+
+#-------------------------------------------------------------------------
+# Checks for programs
+#-------------------------------------------------------------------------
+
+AC_PROG_CC
+AC_PROG_CXX
+AC_CHECK_TOOL([AR],[ar])
+AC_CHECK_TOOL([RANLIB],[ranlib])
+
+#-------------------------------------------------------------------------
+# MCPPBS specific program checks
+#-------------------------------------------------------------------------
+# These macros check to see if we can do a stow-based install and also
+# check for an isa simulator suitable for running the unit test programs
+# via the makefile.
+
+MCPPBS_PROG_INSTALL
+MCPPBS_PROG_RUN
+
+#-------------------------------------------------------------------------
+# Checks for header files
+#-------------------------------------------------------------------------
+
+AC_HEADER_STDC
+
+#-------------------------------------------------------------------------
+# Default compiler flags
+#-------------------------------------------------------------------------
+
+AC_SUBST([CFLAGS],  ["-Wall -O2"])
+AC_SUBST([CXXFLAGS],["-Wall -O2 -Wno-pmf-conversions"])
+
+#-------------------------------------------------------------------------
+# MCPPBS subproject list
+#-------------------------------------------------------------------------
+# Order list so that subprojects only depend on those listed earlier.
+# The '*' suffix indicates an optional subproject. The '**' suffix
+# indicates an optional subproject which is also the name of a group.
+
+MCPPBS_SUBPROJECTS([ riscv, softfloat, softfloat_riscv ])
+
+#-------------------------------------------------------------------------
+# MCPPBS subproject groups
+#-------------------------------------------------------------------------
+# If a group has the same name as a subproject then you must add the
+# '**' suffix in the subproject list above. The list of subprojects in a
+# group should be ordered so that subprojets only depend on those listed
+# earlier. Here is an example:
+#
+#  MCPPBS_GROUP( [group-name], [sproja,sprojb,...] )
+#
+
+#-------------------------------------------------------------------------
+# Output
+#-------------------------------------------------------------------------
+
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT