fix Mingw W64-32 cross compile failure due to printf redefinition in libintl.h

In file included from util/misc.c:36:0:
./include/grub/emu/misc.h:56:1: error: 'libintl_printf' is an unrecognized format function type [-Werror=format=]
 char * EXPORT_FUNC(xasprintf) (const char *fmt, ...) __attribute__ ((format (printf, 1, 2))) WARN_UNUSED_RESULT;
 ^
./include/grub/emu/misc.h:58:1: error: 'libintl_printf' is an unrecognized format function type [-Werror=format=]

The reason is libintl.h which redefines printf as libintl_printf. The problem
is not present in native MinGW build which avoids redefinition.  Use
(format (__printf__) instead which is valid replacement in GCC.

v2: add grub-core/lib/libgcrypt/src/g10lib.h
v3: modify g10lib.h during import

diff --git a/ChangeLog b/ChangeLog
index b405b7ee5bd0b77b4c623ee8ac6c043a05d09d5d..c93f11fbb205f5d7e332a54f5b5ccd40bf64c7ba 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+
+2014-01-25  Andrey Borzenkov <arvidjaar@gmail.com>
+
+       * include/grub/crypto.h: Replace __attribute__ ((format (printf)) with
+       __attribute__ ((format (__printf__)) to fix compilation under MinGW-w64.
+       * include/grub/emu/misc.h: ... and here.
+       * include/grub/err.h: ... and here.
+       * util/import_gcry.py: ... and here (in files g10lib.h).
+
 2014-01-25  Andrey Borzenkov <arvidjaar@gmail.com>
 
        * util/grub-mkimage.c: Make prefix argument mandatory.

diff --git a/include/grub/crypto.h b/include/grub/crypto.h
index ec1b980d2ec7a6cc457cd085b771f0387c49e5ee..a24e89dd9cd0f36a9440d827e690bc162bef374f 100644 (file)
--- a/include/grub/crypto.h
+++ b/include/grub/crypto.h
@@ -408,7 +408,7 @@ void _gcry_assert_failed (const char *expr, const char *file, int line,
                           const char *func) __attribute__ ((noreturn));
 
 void _gcry_burn_stack (int bytes);
-void _gcry_log_error( const char *fmt, ... )  __attribute__ ((format (printf, 1, 2)));
+void _gcry_log_error( const char *fmt, ... )  __attribute__ ((format (__printf__, 1, 2)));
 
 
 #ifdef GRUB_UTIL

diff --git a/include/grub/emu/misc.h b/include/grub/emu/misc.h
index dde48c192d321482f981c9b5ac8219c399774aa3..a588ba21da23e4d9458f9c7b746ec2f8e64d7200 100644 (file)
--- a/include/grub/emu/misc.h
+++ b/include/grub/emu/misc.h
@@ -53,11 +53,11 @@ grub_util_device_is_mapped (const char *dev);
 void * EXPORT_FUNC(xmalloc) (grub_size_t size) WARN_UNUSED_RESULT;
 void * EXPORT_FUNC(xrealloc) (void *ptr, grub_size_t size) WARN_UNUSED_RESULT;
 char * EXPORT_FUNC(xstrdup) (const char *str) WARN_UNUSED_RESULT;
-char * EXPORT_FUNC(xasprintf) (const char *fmt, ...) __attribute__ ((format (printf, 1, 2))) WARN_UNUSED_RESULT;
+char * EXPORT_FUNC(xasprintf) (const char *fmt, ...) __attribute__ ((format (__printf__, 1, 2))) WARN_UNUSED_RESULT;
 
-void EXPORT_FUNC(grub_util_warn) (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
-void EXPORT_FUNC(grub_util_info) (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
-void EXPORT_FUNC(grub_util_error) (const char *fmt, ...) __attribute__ ((format (printf, 1, 2), noreturn));
+void EXPORT_FUNC(grub_util_warn) (const char *fmt, ...) __attribute__ ((format (__printf__, 1, 2)));
+void EXPORT_FUNC(grub_util_info) (const char *fmt, ...) __attribute__ ((format (__printf__, 1, 2)));
+void EXPORT_FUNC(grub_util_error) (const char *fmt, ...) __attribute__ ((format (__printf__, 1, 2), noreturn));
 
 grub_uint64_t EXPORT_FUNC (grub_util_get_cpu_time_ms) (void);
 

diff --git a/include/grub/err.h b/include/grub/err.h
index 9896fccf98adef1b11db6b4d9ea13e2b18d268b3..1590c688e1d3cc6ae0cff285c39af25c2c608e04 100644 (file)
--- a/include/grub/err.h
+++ b/include/grub/err.h
@@ -91,6 +91,6 @@ int EXPORT_FUNC(grub_error_pop) (void);
 void EXPORT_FUNC(grub_print_error) (void);
 extern int EXPORT_VAR(grub_err_printed_errors);
 int grub_err_printf (const char *fmt, ...)
-     __attribute__ ((format (printf, 1, 2)));
+     __attribute__ ((format (__printf__, 1, 2)));
 
 #endif /* ! GRUB_ERR_HEADER */

diff --git a/util/import_gcry.py b/util/import_gcry.py
index 63ebb90f1fe4015fdfc4fd188328a23ad857eec0..2b3322d3a12107a4215fe677a424abc5254154da 100644 (file)
--- a/util/import_gcry.py
+++ b/util/import_gcry.py
@@ -534,6 +534,12 @@ for src in sorted (os.listdir (os.path.join (indir, "src"))):
         fw.close ()
         continue
 
+    if src == "g10lib.h":
+        fw.write (f.read ().replace ("(printf,f,a)", "(__printf__,f,a)"))
+        f.close ()
+        fw.close ()
+        continue
+
     fw.write (f.read ())
     f.close ()
     fw.close ()