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https://github.com/osandov/drgn/pull/427
From 4aad3f174ceaaa740728ba92181d9d156f70abac Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Tue, 27 Aug 2024 21:03:42 +0100
Subject: [PATCH] libdrgn: fix bashism in M4 macro
configure scripts need to be runnable with a POSIX-compliant /bin/sh.
On many (but not all!) systems, /bin/sh is provided by Bash, so errors
like this aren't spotted. Notably Debian defaults to /bin/sh provided
by dash which doesn't tolerate such bashisms as '=='.
This retains compatibility with bash.
Signed-off-by: Sam James <sam@gentoo.org>
---
libdrgn/m4/my_c_auto.m4 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libdrgn/m4/my_c_auto.m4 b/libdrgn/m4/my_c_auto.m4
index d38c72436..30f3221b5 100644
--- a/libdrgn/m4/my_c_auto.m4
+++ b/libdrgn/m4/my_c_auto.m4
@@ -12,7 +12,7 @@ if test "x$my_cv_c_auto" != xyes; then
AC_CACHE_CHECK([for __auto_type], [my_cv_c___auto_type],
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[__auto_type x = 1;]])],
[my_cv_c___auto_type=yes], [my_cv_c___auto_type=no])])
- if test "x$my_cv_c___auto_type" == xyes; then
+ if test "x$my_cv_c___auto_type" = xyes; then
AC_DEFINE([auto], [__auto_type])
else
AC_MSG_ERROR([no auto or __auto_type])
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