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build: Always use EXTERN_UNLESS_MAIN_MODULE pattern.

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* common/util.h (EXTERN_UNLESS_MAIN_MODULE): Add the definion only
here but now without the Norcroft-C.  Change all other places where it
gets defined.
* common/iobuf.h (iobuf_debug_mode): Declare unconditionally as
extern.
* common/iobuf.c (iobuf_debug_mode): Define it here.
* agent/gpg-agent.c (INCLUDED_BY_MAIN_MODULE): Define here and also in
all main modules of all other programs.

* g10/main.h: Put util.h before the local header files.
--

This change is required for use with gcc/ld's LTO feature which does
not allow common blocks.  Further gcc 10 will make -fno-common the
default and thus this chnage is always needed.  What a pitty.

Co-authored-by: Tomáš Mráz
GnuPG-bug-id: 4831
Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit 21d9bd8b87)

- Applied respective chnages also to gpg-card and keyboxd.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2020-02-10 16:37:34 +01:00
parent 5681b8eaa4
commit 6aff8a1328
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GPG key ID: E3FDFF218E45B72B
32 changed files with 41 additions and 18 deletions
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common/iobuf.c
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@ -123,6 +123,7 @@ struct close_cache_s
typedef struct close_cache_s *close_cache_t;
static close_cache_t close_cache;
int iobuf_debug_mode;
#ifdef HAVE_W32_SYSTEM