[Buildroot] [PATCH 1/1] package/tpm2-tss: fix build with autoconf >= 2.70

[Fabrice Fontaine]

Fix the following build failure raised since bump of autoconf to version
2.71 in commit ecd54b65c1f998a7ccd91f7c523e4ff38c4781da:

./configure: line 14636: syntax error near unexpected token `newline'
./configure: line 14636: `    '''
package/pkg-generic.mk:273: recipe for target '/home/buildroot/autobuild/instance-3/output-1/build/tpm2-tss-3.0.3/.stamp_configured' failed

It should be noted that this patch is included in version 3.1:
https://patchwork.ozlabs.org/project/buildroot/patch/RnUd7kxUKLWeLZSMoM1dFtpAD4Qfe3R-67gu27eAGtE6yrgC1oHzq1GwiOoE9Gmk6uZZ-c6k6LUVxdMqKhUro4_bM4zZKPhsbN5e9BV8SV4=@protonmail.com

Fixes:
 - http://autobuild.buildroot.org/results/5d4ca70ebf30463aa7e8a96a90effa6282f57e21

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 ...fix-compatibility-with-autoconf-2-70.patch | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 package/tpm2-tss/0002-configure-ac-fix-compatibility-with-autoconf-2-70.patch

diff --git a/package/tpm2-tss/0002-configure-ac-fix-compatibility-with-autoconf-2-70.patch b/package/tpm2-tss/0002-configure-ac-fix-compatibility-with-autoconf-2-70.patch
new file mode 100644
index 0000000000..f21aa179f8
--- /dev/null
+++ b/package/tpm2-tss/0002-configure-ac-fix-compatibility-with-autoconf-2-70.patch
@@ -0,0 +1,48 @@
+From 03cca78d24d716eec792f86f5b0bc69886fad981 Mon Sep 17 00:00:00 2001
+From: Patrick McCarty <patrick.mccarty at intel.com>
+Date: Fri, 18 Dec 2020 01:54:05 +0000
+Subject: [PATCH] configure.ac: fix compatibility with autoconf 2.70
+
+With autoconf 2.70, not quoting the second argument to one of the AS_IF
+macro expansions leads to generation of invalid shell code affecting the
+first nested ERROR_IF_NO_PROG expansion.
+
+The invalid shell code leads to an error resembling:
+
+  ./configure: line 18826: syntax error near unexpected token `newline'
+  ./configure: line 18826: `    '''
+
+Fix the issue by quoting the second argument to the affected AS_IF,
+similar to the quoting found elsewhere in configure.ac.
+
+Signed-off-by: Patrick McCarty <patrick.mccarty at intel.com>
+
+[Retrieved from:
+https://github.com/tpm2-software/tpm2-tss/commit/03cca78d24d716eec792f86f5b0bc69886fad981]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
+---
+ configure.ac | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index ff59dd7ce..3049032bc 100755
+--- a/configure.ac
++++ b/configure.ac
+@@ -285,7 +285,7 @@ AC_ARG_ENABLE([integration],
+         [build and execute integration tests])],,
+     [enable_integration=no])
+ AS_IF([test "x$enable_integration" = "xyes"],
+-     AS_IF([test "$HOSTOS" = "Linux"],
++     [AS_IF([test "$HOSTOS" = "Linux"],
+            [ERROR_IF_NO_PROG([ss])],
+            [ERROR_IF_NO_PROG([sockstat])])
+        ERROR_IF_NO_PROG([echo])
+@@ -335,7 +335,7 @@ AS_IF([test "x$enable_integration" = "xyes"],
+              [AC_MSG_ERROR([No simulator executable found in PATH for testing TCTI.])])
+        AC_SUBST([INTEGRATION_TCTI], [$integration_tcti])
+        AC_SUBST([INTEGRATION_ARGS], [$integration_args])
+-       AC_SUBST([ENABLE_INTEGRATION], [$enable_integration]))
++       AC_SUBST([ENABLE_INTEGRATION], [$enable_integration])])
+ AM_CONDITIONAL([ENABLE_INTEGRATION],[test "x$enable_integration" = "xyes"])
+ #
+ # sanitizer compiler flags
-- 
2.33.0