eal: simplify meson build of common directory

[dpdk.git] / lib / librte_eal / common / include / rte_common.h

diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index c352838..f820c2e 100644 (file)
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -42,8 +42,23 @@ extern "C" {
 #define RTE_STD_C11
 #endif
 
-/** Define GCC_VERSION **/
-#ifdef RTE_TOOLCHAIN_GCC
+/*
+ * RTE_TOOLCHAIN_GCC is defined if the target is built with GCC,
+ * while a host application (like pmdinfogen) may have another compiler.
+ * RTE_CC_IS_GNU is true if the file is compiled with GCC,
+ * no matter it is a target or host application.
+ */
+#define RTE_CC_IS_GNU 0
+#if defined __clang__
+#define RTE_CC_CLANG
+#elif defined __INTEL_COMPILER
+#define RTE_CC_ICC
+#elif defined __GNUC__
+#define RTE_CC_GCC
+#undef RTE_CC_IS_GNU
+#define RTE_CC_IS_GNU 1
+#endif
+#if RTE_CC_IS_GNU
 #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + \
                __GNUC_PATCHLEVEL__)
 #endif
@@ -89,6 +104,21 @@ typedef uint16_t unaligned_uint16_t;
  */
 #define RTE_SET_USED(x) (void)(x)
 
+/**
+ * Check format string and its arguments at compile-time.
+ *
+ * GCC on Windows assumes MS-specific format string by default,
+ * even if the underlying stdio implementation is ANSI-compliant,
+ * so this must be overridden.
+ */
+#if RTE_CC_IS_GNU
+#define __rte_format_printf(format_index, first_arg) \
+       __attribute__((format(gnu_printf, format_index, first_arg)))
+#else
+#define __rte_format_printf(format_index, first_arg) \
+       __attribute__((format(printf, format_index, first_arg)))
+#endif
+
 #define RTE_PRIORITY_LOG 101
 #define RTE_PRIORITY_BUS 110
 #define RTE_PRIORITY_CLASS 120
@@ -335,6 +365,18 @@ typedef uint64_t phys_addr_t;
 typedef uint64_t rte_iova_t;
 #define RTE_BAD_IOVA ((rte_iova_t)-1)
 
+/*********** Structure alignment markers ********/
+
+/** Generic marker for any place in a structure. */
+__extension__ typedef void    *RTE_MARKER[0];
+/** Marker for 1B alignment in a structure. */
+__extension__ typedef uint8_t  RTE_MARKER8[0];
+/** Marker for 2B alignment in a structure. */
+__extension__ typedef uint16_t RTE_MARKER16[0];
+/** Marker for 4B alignment in a structure. */
+__extension__ typedef uint32_t RTE_MARKER32[0];
+/** Marker for 8B alignment in a structure. */
+__extension__ typedef uint64_t RTE_MARKER64[0];
 
 /**
  * Combines 32b inputs most significant set bits into the least
@@ -772,7 +814,7 @@ rte_str_to_size(const char *str)
 void
 rte_exit(int exit_code, const char *format, ...)
        __attribute__((noreturn))
-       __attribute__((format(printf, 2, 3)));
+       __rte_format_printf(2, 3);
 
 #ifdef __cplusplus
 }