12 files changed, 54 insertions, 86 deletions

diff --git a/include/busybox.h b/include/busybox.h
index 314b95126..54c278f87 100644
--- a/include/busybox.h
+++ b/include/busybox.h
@@ -4,14 +4,12 @@
  *
  * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
  */
-#ifndef _BB_INTERNAL_H_
-#define _BB_INTERNAL_H_    1
+#ifndef BUSYBOX_H
+#define BUSYBOX_H 1
 
 #include "libbb.h"
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 /* order matters: used as index into "install_dir[]" in appletlib.c */
 typedef enum bb_install_loc_t {
@@ -71,8 +69,6 @@ int lbb_main(char **argv);
 #endif
 #endif
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
-#endif  /* _BB_INTERNAL_H_ */
+#endif
diff --git a/include/dump.h b/include/dump.h
index 44f2082b7..925270d9c 100644
--- a/include/dump.h
+++ b/include/dump.h
@@ -1,8 +1,6 @@
 /* vi: set sw=4 ts=4: */
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 #define F_IGNORE        0x01            /* %_A */
 #define F_SETREP        0x02            /* rep count set, not default */
@@ -55,6 +53,4 @@ dumper_t* alloc_dumper(void) FAST_FUNC;
 extern void bb_dump_add(dumper_t *dumper, const char *fmt) FAST_FUNC;
 extern int bb_dump_dump(dumper_t *dumper, char **argv) FAST_FUNC;
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
diff --git a/include/grp_.h b/include/grp_.h
index 3d00b4aa7..deaf9e6a3 100644
--- a/include/grp_.h
+++ b/include/grp_.h
@@ -15,18 +15,15 @@
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
+   02111-1307 USA.
+ */
 /*
  *      POSIX Standard: 9.2.1 Group Database Access     <grp.h>
  */
+#ifndef BB_GRP_H
+#define BB_GRP_H 1
 
-#ifndef BB_GRP_H
-#define BB_GRP_H 1
-
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 /* This file is #included after #include <grp.h>
  * We will use libc-defined structures, but will #define function names
@@ -115,8 +112,6 @@ extern int getgrouplist(const char *__user, gid_t __group,
    of which USER is a member.  Also include GROUP.  */
 extern int initgroups(const char *__user, gid_t __group);
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif
diff --git a/include/libbb.h b/include/libbb.h
index 74ec678d8..babf9c9f7 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -7,8 +7,8 @@
  *
  * Licensed under the GPL version 2, see the file LICENSE in this tarball.
  */
-#ifndef __LIBBUSYBOX_H__
-#define __LIBBUSYBOX_H__    1
+#ifndef LIBBB_H
+#define LIBBB_H 1
 
 #include "platform.h"
 
@@ -110,9 +110,7 @@ int sysinfo(struct sysinfo* info);
 
 /* Make all declarations hidden (-fvisibility flag only affects definitions) */
 /* (don't include system headers after this until corresponding pop!) */
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 
 #if ENABLE_USE_BB_PWD_GRP
@@ -1532,9 +1530,6 @@ extern const char bb_default_login_shell[];
 #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
 
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
-
+POP_SAVED_FUNCTION_VISIBILITY
 
-#endif /* __LIBBUSYBOX_H__ */
+#endif
diff --git a/include/platform.h b/include/platform.h
index 13dfcbd32..47fd5f63d 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -4,8 +4,8 @@
 
    Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 */
-#ifndef __PLATFORM_H
-#define __PLATFORM_H    1
+#ifndef BB_PLATFORM_H
+#define BB_PLATFORM_H 1
 
 /* Convenience macros to test the version of gcc. */
 #undef __GNUC_PREREQ
@@ -110,6 +110,16 @@
 # define FAST_FUNC
 #endif
 
+/* Make all declarations hidden (-fvisibility flag only affects definitions) */
+/* (don't include system headers after this until corresponding pop!) */
+#if __GNUC_PREREQ(4,1)
+# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
+# define POP_SAVED_FUNCTION_VISIBILITY              _Pragma("GCC visibility pop")
+#else
+# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
+# define POP_SAVED_FUNCTION_VISIBILITY
+#endif
+
 /* ---- Endian Detection ------------------------------------ */
 
 #if (defined __digital__ && defined __unix__)
@@ -371,4 +381,4 @@ static ALWAYS_INLINE char* strchrnul(const char *s, char c)
 #endif
 #endif
 
-#endif  /* platform.h */
+#endif
diff --git a/include/pwd_.h b/include/pwd_.h
index a0cf7c9f7..f52445ceb 100644
--- a/include/pwd_.h
+++ b/include/pwd_.h
@@ -21,12 +21,10 @@
  *      POSIX Standard: 9.2.2 User Database Access      <pwd.h>
  */
 
-#ifndef BB_PWD_H
-#define BB_PWD_H 1
+#ifndef BB_PWD_H
+#define BB_PWD_H 1
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 /* This file is #included after #include <pwd.h>
  * We will use libc-defined structures, but will #define function names
@@ -107,8 +105,6 @@ extern int fgetpwent_r(FILE *__restrict __stream,
    will expect, but this need not be the format of the password file.  */
 /* UNUSED extern int getpw(uid_t __uid, char *__buffer); */
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif /* pwd.h  */
diff --git a/include/rtc_.h b/include/rtc_.h
index ae17ee7d4..74bb695a0 100644
--- a/include/rtc_.h
+++ b/include/rtc_.h
@@ -5,13 +5,11 @@
  */
 
 #ifndef BB_RTC_H
-#define BB_RTC_H
+#define BB_RTC_H 1
 
 #include "libbb.h"
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 extern int rtc_adjtime_is_utc(void) FAST_FUNC;
 extern int rtc_xopen(const char **default_rtc, int flags) FAST_FUNC;
@@ -71,8 +69,6 @@ struct linux_rtc_wkalrm {
 #define RTC_AF 0x20
 #define RTC_UF 0x10
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif
diff --git a/include/shadow_.h b/include/shadow_.h
index 60f3e6b5f..02d3bf9a5 100644
--- a/include/shadow_.h
+++ b/include/shadow_.h
@@ -22,9 +22,7 @@
 #ifndef BB_SHADOW_H
 #define BB_SHADOW_H 1
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 /* This file is #included after #include <shadow.h>
  * We will use libc-defined structures, but will #define function names
@@ -97,8 +95,6 @@ extern int lckpwdf(void);
 /* Unlock password file */
 extern int ulckpwdf(void);
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif /* shadow.h */
diff --git a/include/unarchive.h b/include/unarchive.h
index 9077130a5..beb962c8f 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -1,10 +1,8 @@
 /* vi: set sw=4 ts=4: */
-#ifndef __UNARCHIVE_H__
-#define __UNARCHIVE_H__
+#ifndef UNARCHIVE_H
+#define UNARCHIVE_H 1
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 #define ARCHIVE_PRESERVE_DATE           1
 #define ARCHIVE_CREATE_LEADING_DIRS     2
@@ -150,8 +148,6 @@ void open_transformer(int src_fd, const char *transform_prog) FAST_FUNC;
 #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transform_prog)
 #endif
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif
diff --git a/include/usage.h b/include/usage.h
index af54b86a7..cbbd7516a 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -9,9 +9,8 @@
  * or
  *    |<5 spaces>"\ntext with tabs"....
  */
-
-#ifndef __BB_USAGE_H__
-#define __BB_USAGE_H__
+#ifndef BB_USAGE_H
+#define BB_USAGE_H 1
 
 
 #define NOUSAGE_STR "\b"
@@ -4921,4 +4920,5 @@ USE_FEATURE_TUNCTL_UG( \
      "\nWith no -q, runs continuously monitoring for ARP conflicts," \
      "\nexits only on I/O errors (link down etc)" \
 
-#endif /* __BB_USAGE_H__ */
+
+#endif
diff --git a/include/xatonum.h b/include/xatonum.h
index 86a3472d9..ee816efb4 100644
--- a/include/xatonum.h
+++ b/include/xatonum.h
@@ -7,9 +7,7 @@
  * Licensed under GPLv2, see file LICENSE in this tarball for details.
  */
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 /* Provides extern declarations of functions */
 #define DECLARE_STR_CONV(type, T, UT) \
@@ -171,6 +169,4 @@ uint32_t bb_strtou32(const char *arg, char **endp, int base)
 
 double bb_strtod(const char *arg, char **endp) FAST_FUNC;
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
diff --git a/include/xregex.h b/include/xregex.h
index 90cf124ee..61658ed85 100644
--- a/include/xregex.h
+++ b/include/xregex.h
@@ -8,20 +8,16 @@
  *
  * Licensed under GPLv2 or later, see file License in this tarball for details.
  */
-#ifndef __BB_REGEX__
-#define __BB_REGEX__
+#ifndef BB_REGEX_H
+#define BB_REGEX_H 1
 
 #include <regex.h>
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 char* regcomp_or_errmsg(regex_t *preg, const char *regex, int cflags) FAST_FUNC;
 void xregcomp(regex_t *preg, const char *regex, int cflags) FAST_FUNC;
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif