diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index 732cd6a..5cfd231 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -103,7 +103,7 @@ jobs:
       run: pip install --pre meson ninja
     - uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0
     - name: configure
-      run: meson setup builddir --fatal-meson-warnings -Ddefault_library=static
+      run: meson setup builddir --fatal-meson-warnings -Ddefault_library=shared
     - name: build
       run: ninja -C builddir
     - name: check
diff --git a/src/meson.build b/src/meson.build
index aab697c..0f75268 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -38,6 +38,7 @@ liberfa = library(
     'xy06.c', 'xys00a.c', 'xys00b.c', 'xys06a.c', 'zp.c', 'zpv.c', 'zr.c',
     'erfaversion.c', 'erfadatextra.c',
     dependencies: libm,
+	vs_module_defs: '../windows/erfa.def',
     version: soversion,
     install: true,
 )
diff --git a/windows/erfa.def b/windows/erfa.def
new file mode 100644
index 0000000..2ee944c
--- /dev/null
+++ b/windows/erfa.def
@@ -0,0 +1,256 @@
+VERSION 0.1
+EXPORTS
+	eraCal2jd
+	eraEpb
+	eraEpb2jd
+	eraEpj
+	eraEpj2jd
+	eraJd2cal
+	eraJdcalf
+	eraAb
+	eraApcg
+	eraApcg13
+	eraApci
+	eraApci13
+	eraApco
+	eraApco13
+	eraApcs
+	eraApcs13
+	eraAper
+	eraAper13
+	eraApio
+	eraApio13
+	eraAtcc13
+	eraAtccq
+	eraAtci13
+	eraAtciq
+	eraAtciqn
+	eraAtciqz
+	eraAtco13
+	eraAtic13
+	eraAticq
+	eraAticqn
+	eraAtio13
+	eraAtioq
+	eraAtoc13
+	eraAtoi13
+	eraAtoiq
+	eraLd
+	eraLdn
+	eraLdsun
+	eraPmpx
+	eraPmsafe
+	eraPvtob
+	eraRefco
+	eraEpv00
+	eraMoon98
+	eraPlan94
+	eraFad03
+	eraFae03
+	eraFaf03
+	eraFaju03
+	eraFal03
+	eraFalp03
+	eraFama03
+	eraFame03
+	eraFane03
+	eraFaom03
+	eraFapa03
+	eraFasa03
+	eraFaur03
+	eraFave03
+	eraBi00
+	eraBp00
+	eraBp06
+	eraBpn2xy
+	eraC2i00a
+	eraC2i00b
+	eraC2i06a
+	eraC2ibpn
+	eraC2ixy
+	eraC2ixys
+	eraC2t00a
+	eraC2t00b
+	eraC2t06a
+	eraC2tcio
+	eraC2teqx
+	eraC2tpe
+	eraC2txy
+	eraEo06a
+	eraEors
+	eraFw2m
+	eraFw2xy
+	eraLtp
+	eraLtpb
+	eraLtpecl
+	eraLtpequ
+	eraNum00a
+	eraNum00b
+	eraNum06a
+	eraNumat
+	eraNut00a
+	eraNut00b
+	eraNut06a
+	eraNut80
+	eraNutm80
+	eraObl06
+	eraObl80
+	eraP06e
+	eraPb06
+	eraPfw06
+	eraPmat00
+	eraPmat06
+	eraPmat76
+	eraPn00
+	eraPn00a
+	eraPn00b
+	eraPn06
+	eraPn06a
+	eraPnm00a
+	eraPnm00b
+	eraPnm06a
+	eraPnm80
+	eraPom00
+	eraPr00
+	eraPrec76
+	eraS00
+	eraS00a
+	eraS00b
+	eraS06
+	eraS06a
+	eraSp00
+	eraXy06
+	eraXys00a
+	eraXys00b
+	eraXys06a
+	eraEe00
+	eraEe00a
+	eraEe00b
+	eraEe06a
+	eraEect00
+	eraEqeq94
+	eraEra00
+	eraGmst00
+	eraGmst06
+	eraGmst82
+	eraGst00a
+	eraGst00b
+	eraGst06
+	eraGst06a
+	eraGst94
+	eraPvstar
+	eraStarpv
+	eraFk425
+	eraFk45z
+	eraFk524
+	eraFk52h
+	eraFk54z
+	eraFk5hip
+	eraFk5hz
+	eraH2fk5
+	eraHfk5z
+	eraStarpm
+	eraEceq06
+	eraEcm06
+	eraEqec06
+	eraLteceq
+	eraLtecm
+	eraLteqec
+	eraG2icrs
+	eraIcrs2g
+	eraEform
+	eraGc2gd
+	eraGc2gde
+	eraGd2gc
+	eraGd2gce
+	eraD2dtf
+	eraDat
+	eraDtdb
+	eraDtf2d
+	eraTaitt
+	eraTaiut1
+	eraTaiutc
+	eraTcbtdb
+	eraTcgtt
+	eraTdbtcb
+	eraTdbtt
+	eraTttai
+	eraTttcg
+	eraTttdb
+	eraTtut1
+	eraUt1tai
+	eraUt1tt
+	eraUt1utc
+	eraUtctai
+	eraUtcut1
+	eraAe2hd
+	eraHd2ae
+	eraHd2pa
+	eraTpors
+	eraTporv
+	eraTpsts
+	eraTpstv
+	eraTpxes
+	eraTpxev
+	eraA2af
+	eraA2tf
+	eraAf2a
+	eraAnp
+	eraAnpm
+	eraD2tf
+	eraTf2a
+	eraTf2d
+	eraRx
+	eraRy
+	eraRz
+	eraCp
+	eraCpv
+	eraCr
+	eraP2pv
+	eraPv2p
+	eraIr
+	eraZp
+	eraZpv
+	eraZr
+	eraRxr
+	eraTr
+	eraRxp
+	eraRxpv
+	eraTrxp
+	eraTrxpv
+	eraRm2v
+	eraRv2m
+	eraPap
+	eraPas
+	eraSepp
+	eraSeps
+	eraC2s
+	eraP2s
+	eraPv2s
+	eraS2c
+	eraS2p
+	eraS2pv
+	eraPdp
+	eraPm
+	eraPmp
+	eraPn
+	eraPpp
+	eraPpsp
+	eraPvdpv
+	eraPvm
+	eraPvmpv
+	eraPvppv
+	eraPvu
+	eraPvup
+	eraPvxpv
+	eraPxp
+	eraS2xpv
+	eraSxp
+	eraSxpv
+	eraVersion
+	eraVersionMajor
+	eraVersionMinor
+	eraVersionMicro
+	eraSofaVersion
+	eraGetLeapSeconds
+	eraSetLeapSeconds