+# These are derived from the VERSION macros in lib/notmuch.h so
+# if you have to change them, something is wrong.
+
+# The C compiler to use
+CC = ${CC}
+
+# The C++ compiler to use
+CXX = ${CXX}
+
+# Command to execute emacs from Makefiles
+EMACS = emacs --quick
+
+# Default FLAGS for C compiler (can be overridden by user such as "make CFLAGS=-g")
+CFLAGS = ${CFLAGS}
+
+# Default FLAGS for C preprocessor (can be overridden by user such as "make CPPFLAGS=-I/usr/local/include")
+CPPFLAGS = ${CPPFLAGS}
+
+# Default FLAGS for C++ compiler (can be overridden by user such as "make CXXFLAGS=-g")
+CXXFLAGS = ${CXXFLAGS}
+
+# Default FLAGS for the linker (can be overridden by user such as "make LDFLAGS=-znow")
+LDFLAGS = ${LDFLAGS}
+
+# Flags to enable warnings when using the C++ compiler
+WARN_CXXFLAGS=${WARN_CXXFLAGS}
+
+# Flags to enable warnings when using the C compiler
+WARN_CFLAGS=${WARN_CFLAGS}
+
+# Name of python interpreter
+PYTHON = ${python}
+
+# The prefix to which notmuch should be installed
+# Note: If you change this value here, be sure to ensure that the
+# LIBDIR_IN_LDCONFIG value below is still set correctly.
+prefix = ${PREFIX}
+
+# The directory to which libraries should be installed
+# Note: If you change this value here, be sure to ensure that the
+# LIBDIR_IN_LDCONFIG value below is still set correctly.
+libdir = ${LIBDIR:=\$(prefix)/lib}
+
+# byte order within a 32 bit word. 1234 = little, 4321 = big, 0 = guess
+UTIL_BYTE_ORDER = ${util_byte_order}
+
+# Whether libdir is in a path configured into ldconfig
+LIBDIR_IN_LDCONFIG = ${libdir_in_ldconfig}
+
+# The directory to which header files should be installed
+includedir = ${INCLUDEDIR:=\$(prefix)/include}
+
+# The directory to which man pages should be installed
+mandir = ${MANDIR:=\$(prefix)/share/man}
+
+# The directory to which read-only (configuration) files should be installed
+sysconfdir = ${SYSCONFDIR:=\$(prefix)/etc}
+
+# The directory to which emacs lisp files should be installed
+emacslispdir=${EMACSLISPDIR}
+
+# The directory to which emacs miscellaneous (machine-independent) files should
+# be installed
+emacsetcdir=${EMACSETCDIR}
+
+# Whether there's an emacs binary available for byte-compiling
+HAVE_EMACS = ${have_emacs}
+
+# Whether there's a sphinx-build binary available for building documentation
+HAVE_SPHINX=${have_sphinx}
+
+# Whether there's a doxygen binary available for building api documentation
+HAVE_DOXYGEN=${have_doxygen}
+
+# The directory to which desktop files should be installed
+desktop_dir = \$(prefix)/share/applications
+
+# The directory to which bash completions files should be installed
+bash_completion_dir = ${BASHCOMPLETIONDIR:=\$(sysconfdir)/bash_completion.d}
+
+# The directory to which zsh completions files should be installed
+zsh_completion_dir = ${ZSHCOMLETIONDIR:=\$(prefix)/share/zsh/functions/Completion/Unix}
+
+# Whether the canonicalize_file_name function is available (if not, then notmuch will
+# build its own version)
+HAVE_CANONICALIZE_FILE_NAME = ${have_canonicalize_file_name}
+
+# Whether the getline function is available (if not, then notmuch will
+# build its own version)
+HAVE_GETLINE = ${have_getline}
+
+# Are the ruby development files (and ruby) available? If not skip
+# building/testing ruby bindings.
+HAVE_RUBY_DEV = ${have_ruby_dev}
+
+# Whether the strcasestr function is available (if not, then notmuch will
+# build its own version)
+HAVE_STRCASESTR = ${have_strcasestr}
+
+# Whether the strsep function is available (if not, then notmuch will
+# build its own version)
+HAVE_STRSEP = ${have_strsep}
+
+# Whether the timegm function is available (if not, then notmuch will
+# build its own version)
+HAVE_TIMEGM = ${have_timegm}
+
+# Whether struct dirent has d_type (if not, then notmuch will use stat)
+HAVE_D_TYPE = ${have_d_type}
+
+# Whether the Xapian version in use supports compaction
+HAVE_XAPIAN_COMPACT = ${have_xapian_compact}
+
+# Whether the Xapian version in use supports field processors
+HAVE_XAPIAN_FIELD_PROCESSOR = ${have_xapian_field_processor}
+
+# Whether the Xapian version in use supports DB_RETRY_LOCK
+HAVE_XAPIAN_DB_RETRY_LOCK = ${have_xapian_db_retry_lock}
+
+# Whether the getpwuid_r function is standards-compliant
+# (if not, then notmuch will #define _POSIX_PTHREAD_SEMANTICS
+# to enable the standards-compliant version -- needed for Solaris)
+STD_GETPWUID = ${std_getpwuid}
+
+# Whether the asctime_r function is standards-compliant
+# (if not, then notmuch will #define _POSIX_PTHREAD_SEMANTICS
+# to enable the standards-compliant version -- needed for Solaris)
+STD_ASCTIME = ${std_asctime}
+
+# Supported platforms (so far) are: LINUX, MACOSX, SOLARIS, FREEBSD, OPENBSD
+PLATFORM = ${platform}
+
+# Whether the linker will automatically resolve the dependency of one
+# library on another (if not, then linking a binary requires linking
+# directly against both)
+LINKER_RESOLVES_LIBRARY_DEPENDENCIES = ${linker_resolves_library_dependencies}
+
+# Flags needed to compile and link against Xapian
+XAPIAN_CXXFLAGS = ${xapian_cxxflags}
+XAPIAN_LDFLAGS = ${xapian_ldflags}
+
+# Which backend will Xapian use by default?
+DEFAULT_XAPIAN_BACKEND = ${default_xapian_backend}
+
+# Flags needed to compile and link against GMime
+GMIME_CFLAGS = ${gmime_cflags}
+GMIME_LDFLAGS = ${gmime_ldflags}
+
+# Flags needed to compile and link against zlib
+ZLIB_CFLAGS = ${zlib_cflags}
+ZLIB_LDFLAGS = ${zlib_ldflags}
+
+# Flags needed to compile and link against talloc
+TALLOC_CFLAGS = ${talloc_cflags}
+TALLOC_LDFLAGS = ${talloc_ldflags}
+
+# Flags needed to have linker set rpath attribute
+RPATH_LDFLAGS = ${rpath_ldflags}
+
+# Flags needed to have linker link only to necessary libraries
+AS_NEEDED_LDFLAGS = ${as_needed_ldflags}
+
+# Flags to have the linker flag undefined symbols in object files
+NO_UNDEFINED_LDFLAGS = ${no_undefined_ldflags}
+
+# Whether valgrind header files are available
+HAVE_VALGRIND = ${have_valgrind}
+
+# And if so, flags needed at compile time for valgrind macros
+VALGRIND_CFLAGS = ${valgrind_cflags}
+
+# Support for emacs
+WITH_EMACS = ${WITH_EMACS}
+
+# Support for bash completion
+WITH_BASH = ${WITH_BASH}
+
+# Support for zsh completion
+WITH_ZSH = ${WITH_ZSH}
+
+# Combined flags for compiling and linking against all of the above
+COMMON_CONFIGURE_CFLAGS = \\
+ \$(GMIME_CFLAGS) \$(TALLOC_CFLAGS) \$(ZLIB_CFLAGS) \\
+ -DHAVE_VALGRIND=\$(HAVE_VALGRIND) \$(VALGRIND_CFLAGS) \\
+ -DHAVE_GETLINE=\$(HAVE_GETLINE) \\
+ -DHAVE_CANONICALIZE_FILE_NAME=\$(HAVE_CANONICALIZE_FILE_NAME) \\
+ -DHAVE_STRCASESTR=\$(HAVE_STRCASESTR) \\
+ -DHAVE_STRSEP=\$(HAVE_STRSEP) \\
+ -DHAVE_TIMEGM=\$(HAVE_TIMEGM) \\
+ -DHAVE_D_TYPE=\$(HAVE_D_TYPE) \\
+ -DSTD_GETPWUID=\$(STD_GETPWUID) \\
+ -DSTD_ASCTIME=\$(STD_ASCTIME) \\
+ -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT) \\
+ -DSILENCE_XAPIAN_DEPRECATION_WARNINGS \\
+ -DHAVE_XAPIAN_FIELD_PROCESSOR=\$(HAVE_XAPIAN_FIELD_PROCESSOR) \\
+ -DHAVE_XAPIAN_DB_RETRY_LOCK=\$(HAVE_XAPIAN_DB_RETRY_LOCK) \\
+ -DUTIL_BYTE_ORDER=\$(UTIL_BYTE_ORDER)
+
+CONFIGURE_CFLAGS = \$(COMMON_CONFIGURE_CFLAGS)
+
+CONFIGURE_CXXFLAGS = \$(COMMON_CONFIGURE_CFLAGS) \$(XAPIAN_CXXFLAGS)
+
+CONFIGURE_LDFLAGS = \$(GMIME_LDFLAGS) \$(TALLOC_LDFLAGS) \$(ZLIB_LDFLAGS) \$(XAPIAN_LDFLAGS)
+EOF
+
+# construct the sh.config
+cat > sh.config <<EOF
+# This sh.config was automatically generated by the ./configure
+# script of notmuch.
+
+# Whether the Xapian version in use supports compaction
+NOTMUCH_HAVE_XAPIAN_COMPACT=${have_xapian_compact}
+
+# Whether the Xapian version in use supports field processors
+NOTMUCH_HAVE_XAPIAN_FIELD_PROCESSOR=${have_xapian_field_processor}
+
+# Whether the Xapian version in use supports lock retry
+NOTMUCH_HAVE_XAPIAN_DB_RETRY_LOCK=${have_xapian_db_retry_lock}
+
+# Which backend will Xapian use by default?
+NOTMUCH_DEFAULT_XAPIAN_BACKEND=${default_xapian_backend}
+
+# do we have man pages?
+NOTMUCH_HAVE_MAN=$((have_sphinx))
+
+# Name of python interpreter
+NOTMUCH_PYTHON=${python}
+
+# Are the ruby development files (and ruby) available? If not skip
+# building/testing ruby bindings.
+NOTMUCH_HAVE_RUBY_DEV=${have_ruby_dev}
+EOF
+
+# Finally, after everything configured, inform the user how to continue.