fix macro definition for very old GCC < 3

[apt.git] / apt-pkg / contrib / macros.h

diff --git a/apt-pkg/contrib/macros.h b/apt-pkg/contrib/macros.h
index 62e7b65db1d748ae4861ec9c43a4f74da253b471..2f9c6c26930ab953c4cb86bdb921ad7be8d9f66e 100644 (file)
--- a/apt-pkg/contrib/macros.h
+++ b/apt-pkg/contrib/macros.h
@@ -44,7 +44,7 @@
 #define _boundv(a,b,c) b = _bound(a,b,c)
 #define ABS(a) (((a) < (0)) ?-(a) : (a))
 
 #define _boundv(a,b,c) b = _bound(a,b,c)
 #define ABS(a) (((a) < (0)) ?-(a) : (a))
 

-/* Usefull count macro, use on an array of things and it will return the
+/* Useful count macro, use on an array of things and it will return the

    number of items in the array */
 #define _count(a) (sizeof(a)/sizeof(a[0]))
 
    number of items in the array */
 #define _count(a) (sizeof(a)/sizeof(a[0]))
 


@@ -54,37 +54,108 @@
 #define CLRFLAG(v,f)   ((v) &=~FLAG(f))
 #define        CHKFLAG(v,f)    ((v) &  FLAG(f) ? true : false)
 
 #define CLRFLAG(v,f)   ((v) &=~FLAG(f))
 #define        CHKFLAG(v,f)    ((v) &  FLAG(f) ? true : false)
 

-// some nice optional GNUC features
-#if __GNUC__ >= 3
-       #define __must_check    __attribute__ ((warn_unused_result))
-       #define __deprecated    __attribute__ ((deprecated))
-       #define __attrib_const  __attribute__ ((__const__))
-       /* likely() and unlikely() can be used to mark boolean expressions
-          as (not) likely true which will help the compiler to optimise */
+#ifdef __GNUC__
+#define APT_GCC_VERSION (__GNUC__ << 8 | __GNUC_MINOR__)
+#else
+#define APT_GCC_VERSION 0
+#endif
+
+/* likely() and unlikely() can be used to mark boolean expressions
+   as (not) likely true which will help the compiler to optimise */
+#if APT_GCC_VERSION >= 0x0300

        #define likely(x)       __builtin_expect (!!(x), 1)
        #define unlikely(x)     __builtin_expect (!!(x), 0)
 #else
        #define likely(x)       __builtin_expect (!!(x), 1)
        #define unlikely(x)     __builtin_expect (!!(x), 0)
 #else

-       #define __must_check    /* no warn_unused_result */
-       #define __deprecated    /* no deprecated */
-       #define __attrib_const  /* no const attribute */

        #define likely(x)       (x)
        #define unlikely(x)     (x)
 #endif
 
        #define likely(x)       (x)
        #define unlikely(x)     (x)
 #endif
 

+#if APT_GCC_VERSION >= 0x0300
+       #define APT_DEPRECATED  __attribute__ ((deprecated))
+       #define APT_CONST       __attribute__((const))
+       #define APT_PURE        __attribute__((pure))
+       #define APT_NORETURN    __attribute__((noreturn))
+       #define APT_PRINTF(n)   __attribute__((format(printf, n, n + 1)))
+#else
+       #define APT_DEPRECATED
+       #define APT_CONST
+       #define APT_PURE
+       #define APT_NORETURN
+       #define APT_PRINTF(n)
+#endif
+
+#if APT_GCC_VERSION > 0x0302
+       #define APT_NONNULL(...)        __attribute__((nonnull(__VA_ARGS__)))
+       #define APT_MUSTCHECK           __attribute__((warn_unused_result))
+#else
+       #define APT_NONNULL(...)
+       #define APT_MUSTCHECK
+#endif
+
+#if APT_GCC_VERSION >= 0x0400
+       #define APT_SENTINEL    __attribute__((sentinel))
+       #define APT_PUBLIC __attribute__ ((visibility ("default")))
+       #define APT_HIDDEN __attribute__ ((visibility ("hidden")))
+#else
+       #define APT_SENTINEL
+       #define APT_PUBLIC
+       #define APT_HIDDEN
+#endif
+

 // cold functions are unlikely() to be called
 // cold functions are unlikely() to be called

-#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
+#if APT_GCC_VERSION >= 0x0403
+       #define APT_COLD        __attribute__ ((__cold__))
+       #define APT_HOT         __attribute__ ((__hot__))
+#else
+       #define APT_COLD
+       #define APT_HOT
+#endif
+
+#ifndef APT_10_CLEANER_HEADERS
+#if APT_GCC_VERSION >= 0x0300
+       #define __must_check    __attribute__ ((warn_unused_result))
+       #define __deprecated    __attribute__ ((deprecated))
+       #define __attrib_const  __attribute__ ((__const__))
+       #define __like_printf(n)        __attribute__((format(printf, n, n + 1)))
+#else
+       #define __must_check    /* no warn_unused_result */
+       #define __deprecated    /* no deprecated */
+       #define __attrib_const  /* no const attribute */
+       #define __like_printf(n)        /* no like-printf */
+#endif
+#if APT_GCC_VERSION >= 0x0403

        #define __cold  __attribute__ ((__cold__))
        #define __hot   __attribute__ ((__hot__))
 #else
        #define __cold  /* no cold marker */
        #define __hot   /* no hot marker */
 #endif
        #define __cold  __attribute__ ((__cold__))
        #define __hot   __attribute__ ((__hot__))
 #else
        #define __cold  /* no cold marker */
        #define __hot   /* no hot marker */
 #endif

+#endif

 
 

-#ifdef __GNUG__
-// Methods have a hidden this parameter that is visible to this attribute
-       #define __like_printf(n)        __attribute__((format(printf, n, n + 1)))
+#if __GNUC__ >= 4
+       #define APT_IGNORE_DEPRECATED_PUSH \
+               _Pragma("GCC diagnostic push") \
+               _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+       #define APT_IGNORE_DEPRECATED_POP \
+               _Pragma("GCC diagnostic pop")
+       #define APT_IGNORE_DEPRECATED(XXX) \
+               APT_IGNORE_DEPRECATED_PUSH \
+               XXX \
+               APT_IGNORE_DEPRECATED_POP

 #else
 #else

-       #define __like_printf(n)        /* no like-printf */
+       #define APT_IGNORE_DEPRECATED_PUSH
+       #define APT_IGNORE_DEPRECATED_POP
+       #define APT_IGNORE_DEPRECATED(XXX) XXX

 #endif
 
 #endif
 

+// These lines are extracted by the makefiles and the buildsystem
+// Increasing MAJOR or MINOR results in the need of recompiling all
+// reverse-dependencies of libapt-pkg against the new SONAME.
+// Non-ABI-Breaks should only increase RELEASE number.
+// See also buildlib/libversion.mak
+#define APT_PKG_MAJOR 4
+#define APT_PKG_MINOR 15
+#define APT_PKG_RELEASE 0
+#define APT_PKG_ABI ((APT_PKG_MAJOR * 100) + APT_PKG_MINOR)
+

 #endif
 #endif