Merge pull request libarchive#1723 from Biswa96/win32-static-openssl

autotools: Fix static linking when openssl is enabled in windows

Author: mmatuska

build/pkgconfig/libarchive.pc.in

@@ -10,3 +10,4 @@ Cflags: -I${includedir}
 Cflags.private: -DLIBARCHIVE_STATIC
 Libs: -L${libdir} -larchive
 Libs.private: @LIBS@
+Requires.private: @LIBSREQUIRED@

configure.ac

@@ -378,6 +378,7 @@ if test "x$with_iconv" != "xno"; then
     AC_CHECK_HEADERS([localcharset.h])
     am_save_LIBS="$LIBS"
     LIBS="${LIBS} ${LIBICONV}"
+    LIBSREQUIRED="$LIBSREQUIRED${LIBSREQUIRED:+ }iconv"
     AC_CHECK_FUNCS([locale_charset])
     LIBS="${am_save_LIBS}"
     if test "x$ac_cv_func_locale_charset" != "xyes"; then
@@ -1209,6 +1210,7 @@ fi
 if test "x$with_openssl" != "xno"; then
     AC_CHECK_HEADERS([openssl/evp.h])
     saved_LIBS=$LIBS
+    LIBSREQUIRED="$LIBSREQUIRED${LIBSREQUIRED:+ }libssl libcrypto"
     AC_CHECK_LIB(crypto,OPENSSL_config)
     CRYPTO_CHECK(MD5, OPENSSL, md5)
     CRYPTO_CHECK(RMD160, OPENSSL, rmd160)
@@ -1219,6 +1221,8 @@ if test "x$with_openssl" != "xno"; then
     AC_CHECK_FUNCS([PKCS5_PBKDF2_HMAC_SHA1])
 fi
 
+AC_SUBST(LIBSREQUIRED)
+
 # Probe libmd AFTER OpenSSL/libcrypto.
 # The two are incompatible and OpenSSL is more complete.
 AC_CHECK_HEADERS([md5.h ripemd.h sha.h sha256.h sha512.h])