diff --git a/acinclude.m4 b/acinclude.m4
index 5216cd14a5ef..bbc2781eab00 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -26,7 +26,7 @@ i?86-*-linux*|i?86-apple-darwin*|x86_64-*-linux*|powerpc-*-linux*|powerpc64-*-li
 |amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*|arm*-*-linux*|sparc*-*-linux*|mips*-*-linux*|x86_64-apple-darwin*|aarch64*)
     pic_options='-fPIC'
     ;;
-?86-pc-cygwin*|i?86-pc-cygwin*)
+?86-pc-cygwin*|i?86-pc-cygwin*|i?86-pc-mingw32*)
     pic_options='-DDLL_EXPORT'
     ;;
 i?86-apple-darwin*|arm-apple-darwin*)
diff --git a/eglib/acinclude.m4 b/eglib/acinclude.m4
index 5216cd14a5ef..bbc2781eab00 100644
--- a/eglib/acinclude.m4
+++ b/eglib/acinclude.m4
@@ -26,7 +26,7 @@ i?86-*-linux*|i?86-apple-darwin*|x86_64-*-linux*|powerpc-*-linux*|powerpc64-*-li
 |amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*|arm*-*-linux*|sparc*-*-linux*|mips*-*-linux*|x86_64-apple-darwin*|aarch64*)
     pic_options='-fPIC'
     ;;
-?86-pc-cygwin*|i?86-pc-cygwin*)
+?86-pc-cygwin*|i?86-pc-cygwin*|i?86-pc-mingw32*)
     pic_options='-DDLL_EXPORT'
     ;;
 i?86-apple-darwin*|arm-apple-darwin*)
diff --git a/libgc/acinclude.m4 b/libgc/acinclude.m4
index 5216cd14a5ef..bbc2781eab00 100644
--- a/libgc/acinclude.m4
+++ b/libgc/acinclude.m4
@@ -26,7 +26,7 @@ i?86-*-linux*|i?86-apple-darwin*|x86_64-*-linux*|powerpc-*-linux*|powerpc64-*-li
 |amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*|arm*-*-linux*|sparc*-*-linux*|mips*-*-linux*|x86_64-apple-darwin*|aarch64*)
     pic_options='-fPIC'
     ;;
-?86-pc-cygwin*|i?86-pc-cygwin*)
+?86-pc-cygwin*|i?86-pc-cygwin*|i?86-pc-mingw32*)
     pic_options='-DDLL_EXPORT'
     ;;
 i?86-apple-darwin*|arm-apple-darwin*)