--- a/libcurl.pc.in
+++ b/libcurl.pc.in
@@ -36,6 +36,8 @@
 URL: https://curl.se/
 Description: Library to transfer files with ftp, http, etc.
 Version: @CURLVERSION@
+Requires.private: libidn2 libbrotlidec
 Libs: -L${libdir} -lcurl @LIBCURL_NO_SHARED@
 Libs.private: @LIBCURL_LIBS@
 Cflags: -I${includedir} @CPPFLAG_CURL_STATICLIB@
+Cflags.private: -DCURL_STATICLIB
--- a/configure.ac
+++ b/configure.ac
@@ -1914,7 +1914,7 @@
 
 dnl link required libraries for USE_WIN32_CRYPTO or USE_SCHANNEL
 if test "x$USE_WIN32_CRYPTO" = "x1" -o "x$USE_SCHANNEL" = "x1"; then
-  LIBS="-ladvapi32 -lcrypt32 $LIBS"
+  LIBS="-ladvapi32 -lcrypt32 -lbcrypt $LIBS"
 fi
 
 case "x$OPENSSL_ENABLED$GNUTLS_ENABLED$NSS_ENABLED$MBEDTLS_ENABLED$WOLFSSL_ENABLED$SCHANNEL_ENABLED$SECURETRANSPORT_ENABLED$BEARSSL_ENABLED$AMISSL_ENABLED$RUSTLS_ENABLED"