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From b68f10bf1f7519e012da5e35fab3a57da7dc46d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Sun, 27 Mar 2016 17:33:54 -0400
Subject: [PATCH] build-sys: fix build with libgrcypt disabled

- Move gcrypt.h include inside grcrypt-util.h.
- Allow gcrypt-util.[ch] to be compiled even without gcrypt.
This allows the logic in files using gcrypt to be simplified.

- Fix compilation of systemd-resolve without gcrypt.
systemd-resolved already supported that.

Upstream-Status: Backport [ https://github.com/systemd/systemd/pull/2905 ]

Fixes [YOCTO #9219]

Signed-off-by: Maxin B. John <maxin.john@intel.com>
---
 Makefile.am                |  8 ++++----
 src/resolve/resolve-tool.c |  3 +--
 src/shared/gcrypt-util.c   |  4 +++-
 src/shared/gcrypt-util.h   | 14 ++++++++++++++
 4 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 2b72a53..95eaa9a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4262,7 +4262,9 @@ libsystemd_journal_internal_la_SOURCES = \
 	src/journal/mmap-cache.h \
 	src/journal/compress.c \
 	src/journal/audit-type.h \
-	src/journal/audit-type.c
+	src/journal/audit-type.c \
+	src/shared/gcrypt-util.h \
+	src/shared/gcrypt-util.c
 
 nodist_libsystemd_journal_internal_la_SOURCES = \
 	src/journal/audit_type-to-name.h
@@ -4294,9 +4296,7 @@ libsystemd_journal_internal_la_SOURCES += \
 	src/journal/journal-authenticate.c \
 	src/journal/journal-authenticate.h \
 	src/journal/fsprg.c \
-	src/journal/fsprg.h \
-	src/shared/gcrypt-util.c \
-	src/shared/gcrypt-util.h
+	src/journal/fsprg.h
 
 libsystemd_journal_internal_la_LIBADD += \
 	$(GCRYPT_LIBS)
diff --git a/src/resolve/resolve-tool.c b/src/resolve/resolve-tool.c
index 009cc73..14ee01c 100644
--- a/src/resolve/resolve-tool.c
+++ b/src/resolve/resolve-tool.c
@@ -17,7 +17,6 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <gcrypt.h>
 #include <getopt.h>
 #include <net/if.h>
 
@@ -863,7 +862,7 @@ static int resolve_openpgp(sd_bus *bus, const char *address) {
         }
         domain++;
 
-        r = string_hashsum(address, domain - 1 - address, GCRY_MD_SHA224, &hashed);
+        r = string_hashsum_sha224(address, domain - 1 - address, &hashed);
         if (r < 0)
                 return log_error_errno(r, "Hashing failed: %m");
 
diff --git a/src/shared/gcrypt-util.c b/src/shared/gcrypt-util.c
index 4ff9452..39b544b 100644
--- a/src/shared/gcrypt-util.c
+++ b/src/shared/gcrypt-util.c
@@ -19,10 +19,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#ifdef HAVE_GCRYPT
 #include <gcrypt.h>
 
-#include "hexdecoct.h"
 #include "gcrypt-util.h"
+#include "hexdecoct.h"
 
 void initialize_libgcrypt(bool secmem) {
         const char *p;
@@ -67,3 +68,4 @@ int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) {
         *out = enc;
         return 0;
 }
+#endif
diff --git a/src/shared/gcrypt-util.h b/src/shared/gcrypt-util.h
index c7652c2..cf33b3c 100644
--- a/src/shared/gcrypt-util.h
+++ b/src/shared/gcrypt-util.h
@@ -19,7 +19,21 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <stdbool.h>
+#include <stddef.h>
+
+#ifdef HAVE_GCRYPT
+#include <gcrypt.h>
 
 void initialize_libgcrypt(bool secmem);
 int string_hashsum(const char *s, size_t len, int md_algorithm, char **out);
+#endif
+
+static inline int string_hashsum_sha224(const char *s, size_t len, char **out) {
+#ifdef HAVE_GCRYPT
+        return string_hashsum(s, len, GCRY_MD_SHA224, out);
+#else
+        return -EOPNOTSUPP;
+#endif
+}
-- 
2.4.0