configure.ac: NOTIFY_CFLAGS is not set

This sort of assignment, +=, works in makefiles, but not in shell scripts.
Maato · Feb 28, 2023 · b034dd1 · b034dd1
1 parent 8c7aa53
commit b034dd1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/configure.ac b/configure.ac
@@ -86,7 +86,7 @@ fi
 if test "x${notify}" = xyes; then
 # Check for libnotify
 PKG_CHECK_MODULES([NOTIFY], [libnotify >= 0.5.0])
-NOTIFY_CFLAGS+=" -DCOMPILEWITH_NOTIFY"
+NOTIFY_CFLAGS="${NOTIFY_CFLAGS} -DCOMPILEWITH_NOTIFY"
 AC_SUBST(NOTIFY_CFLAGS)
 AC_SUBST(NOTIFY_LIBS)
 fi