./configure --disable-static

rdlibtool --tag=disable-shared --mode=compile cc -g -O2 -I../../../include -I../../../include -I.. -I./.. -c version.c

rdlibtool: lconf: {.name="libtool"}.
rdlibtool: fdcwd: {.fdcwd=AT_FDCWD, .realpath="/tmp/openldap/servers/slapd/back-ldif"}.
rdlibtool: lconf: fstatat(AT_FDCWD,".",...) = 0 {.st_dev = 45, .st_ino = 121396}.
rdlibtool: lconf: openat(AT_FDCWD,"libtool",O_RDONLY,0) = -1 [ENOENT].
rdlibtool: lconf: openat(AT_FDCWD,"../",O_DIRECTORY,0) = 3.
rdlibtool: lconf: fstat(3,...) = 0 {.st_dev = 45, .st_ino = 121357}.
rdlibtool: lconf: openat(3,"libtool",O_RDONLY,0) = -1 [ENOENT].
rdlibtool: lconf: openat(3,"../",O_DIRECTORY,0) = 4.
rdlibtool: lconf: fstat(4,...) = 0 {.st_dev = 45, .st_ino = 121355}.
rdlibtool: lconf: openat(4,"libtool",O_RDONLY,0) = -1 [ENOENT].
rdlibtool: lconf: openat(4,"../",O_DIRECTORY,0) = 3.
rdlibtool: lconf: fstat(3,...) = 0 {.st_dev = 45, .st_ino = 120454}.
rdlibtool: lconf: openat(3,"libtool",O_RDONLY,0) = 4.
rdlibtool: lconf: found "/tmp/openldap/libtool".
ar ruv libback_ldif.a `echo ldif.lo | sed 's/\.lo/.o/g'` version.o
ar: creating libback_ldif.a
ar: ldif.o: No such file or directory
make[3]: *** [Makefile:341: libback_ldif.a] Error 1
make[3]: Leaving directory '/tmp/openldap/servers/slapd/back-ldif'
make[2]: *** [Makefile:547: .backend] Error 1
make[2]: Leaving directory '/tmp/openldap/servers/slapd'
make[1]: *** [Makefile:295: all-common] Error 1
make[1]: Leaving directory '/tmp/openldap/servers'
make: *** [Makefile:316: all-common] Error 1

diff --git a/build/top.mk b/build/top.mk
index f542ded..f07ff77 100644
--- a/build/top.mk
+++ b/build/top.mk
@@ -86,6 +86,11 @@ LTONLY_yes = --tag=disable-shared
 LTONLY_mod = --tag=disable-static
 LTONLY_MOD = $(LTONLY_$(BUILD_MOD))

+# static flag for modules
+STATIC_yes = -static
+STATIC_mod =
+STATIC_MOD = $(STATIC_$(BUILD_MOD))
+
 # platform-specific libtool flags
 NT_LTFLAGS_LIB = -no-undefined -avoid-version -rpath $(libdir)
 NT_LTFLAGS_MOD = -no-undefined -avoid-version -rpath $(moduledir)
@@ -116,7 +121,7 @@ LTLINK_LIB = $(LIBTOOL) $(LTONLY_LIB) --mode=link \
    $(CC) $(LT_CFLAGS) $(LDFLAGS) $(LTFLAGS_LIB)

 LTCOMPILE_MOD = $(LIBTOOL) $(LTONLY_MOD) --mode=compile \
-   $(CC) $(LT_CFLAGS) $(LT_CPPFLAGS) $(MOD_DEFS) -c
+   $(CC) $(STATIC_MOD) $(LT_CFLAGS) $(LT_CPPFLAGS) $(MOD_DEFS) -c

 LTLINK_MOD = $(LIBTOOL) $(LTONLY_MOD) --mode=link \
    $(CC) $(LT_CFLAGS) $(LDFLAGS) $(LTFLAGS_MOD)

# The TAGs below are defined such that we never get into a situation
# where we disable both kinds of libraries.  Given conflicting
# choices, we go for a static library, that is the most portable,
# since we can't tell whether shared libraries were disabled because
# the user asked for that or because the platform doesn't support
# them.  This is particularly important on AIX, because we don't
# support having both static and shared libraries enabled at the same
# time on that platform, so we default to a shared-only configuration.
# If a disable-shared tag is given, we'll fallback to a static-only
# configuration.  But we'll never go from static-only to shared-only.

# ### BEGIN LIBTOOL TAG CONFIG: disable-shared
build_libtool_libs=no
build_old_libs=yes
# ### END LIBTOOL TAG CONFIG: disable-shared

# Whether or not to build static libraries.
build_old_libs=no

# Whether or not to build shared libraries.
build_libtool_libs=yes