diff --git a/gcc10.patch b/gcc10.patch
new file mode 100644
index 0000000..3a08b0c
--- /dev/null
+++ b/gcc10.patch
@@ -0,0 +1,65 @@
+From 45ff87405a6f2ee64ec282e6efc6cca229eae893 Mon Sep 17 00:00:00 2001
+From: Zack Weinberg <zackw@panix.com>
+Date: Wed, 11 Dec 2019 13:27:54 -0500
+Subject: [PATCH 1/2] Remove -Winline from the list of warnings to use (#95)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+GCC 10 may decline to inline some functions in `alg-yescrypt-opt.c`
+and, with `-Winline -Werror`, this breaks the build.  This warning
+isn’t ever going to expose actual bugs, so let’s just turn it off.
+
+Fixes #95.
+---
+ m4/zw_simple_warnings.m4 | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/m4/zw_simple_warnings.m4 b/m4/zw_simple_warnings.m4
+index cfdf9e9..e45453e 100644
+--- a/m4/zw_simple_warnings.m4
++++ b/m4/zw_simple_warnings.m4
+@@ -72,7 +72,6 @@ AC_ARG_ENABLE(
+         -Wformat-overflow=2 dnl
+         -Wformat-signedness dnl
+         -Wformat-truncation=1 dnl
+-        -Winline dnl
+         -Wlogical-op dnl
+         -Wmissing-declarations dnl
+         -Wmissing-prototypes dnl
+-- 
+2.24.1
+
+
+From 941362e2868a71a32a2a497903e651fb647b4fd2 Mon Sep 17 00:00:00 2001
+From: Zack Weinberg <zackw@panix.com>
+Date: Wed, 11 Dec 2019 13:33:07 -0500
+Subject: [PATCH 2/2] crypt-common.h: Declare `ascii64` with explicit `extern`.
+
+GCC 10 changes its default compilation mode from `-fcommon` to
+`-fno-common`, which means that tentative definitions of data objects
+will no longer be merged across translation units; instead they will
+produce multiple definition errors.  The `ascii64` constant was
+supposed to be _declared_ in crypt-common.h, but it was accidentally a
+tentative definition instead.  Fix this by adding the `extern`
+annotation that should have always been there.
+---
+ lib/crypt-common.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/crypt-common.h b/lib/crypt-common.h
+index c97fa5d..1134bc4 100644
+--- a/lib/crypt-common.h
++++ b/lib/crypt-common.h
+@@ -24,7 +24,7 @@
+ /* The base-64 encoding table used by most hashing methods.
+    (bcrypt uses a slightly different encoding.)  Size 65
+    because it's used as a C string in a few places.  */
+-const unsigned char ascii64[65];
++extern const unsigned char ascii64[65];
+ 
+ /* Same table gets used with other names in various places.  */
+ #define b64t   ((const char *) ascii64)
+-- 
+2.24.1
+
diff --git a/libxcrypt.changes b/libxcrypt.changes
index 2ff854e..98803e6 100644
--- a/libxcrypt.changes
+++ b/libxcrypt.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Dec 12 08:23:08 UTC 2019 - Andreas Schwab <schwab@suse.de>
+
+- gcc10.patch: fix build with gcc10 (bsc#1158192)
+
 -------------------------------------------------------------------
 Sat Dec  7 14:19:35 UTC 2019 - Andreas Schwab <schwab@suse.de>
 
diff --git a/libxcrypt.spec b/libxcrypt.spec
index 923d95d..97bdccd 100644
--- a/libxcrypt.spec
+++ b/libxcrypt.spec
@@ -25,6 +25,7 @@ Group:          Development/Libraries/C and C++
 URL:            https://github.com/besser82/%{name}
 Source0:        %{url}/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
 Source1:        baselibs.conf
+Patch0:         gcc10.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  libtool