build-sys: use #if Y instead of #ifdef Y everywhere

The advantage is that is the name is mispellt, cpp will warn us.

$ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/"
$ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;'
$ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g'
$ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g'
+ manual changes to meson.build

squash! build-sys: use #if Y instead of #ifdef Y everywhere

v2:
- fix incorrect setting of HAVE_LIBIDN2

1 files changed, 3 insertions, 3 deletions

diff --git a/src/core/selinux-setup.c b/src/core/selinux-setup.c
index 527aa8add0..60361a5638 100644
--- a/src/core/selinux-setup.c
+++ b/src/core/selinux-setup.c
@@ -21,7 +21,7 @@
 #include <stdio.h>
 #include <unistd.h>
 
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
 #include <selinux/selinux.h>
 #endif
 
@@ -32,7 +32,7 @@
 #include "string-util.h"
 #include "util.h"
 
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
 _printf_(2,3)
 static int null_log(int type, const char *fmt, ...) {
         return 0;
@@ -41,7 +41,7 @@ static int null_log(int type, const char *fmt, ...) {
 
 int mac_selinux_setup(bool *loaded_policy) {
 
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
         int enforce = 0;
         usec_t before_load, after_load;
         char *con;