RISC-V: Rename conflicting variables in gen-riscv-ext-texi.cc

The variables `major` and `minor` in `gen-riscv-ext-texi.cc`
conflict with the macros of the same name defined in `<sys/sysmacros.h>`,
which are exposed when building with newer versions of GCC on older
Linux distributions (e.g., Ubuntu 18.04). To resolve this, we rename them
to `major_version` and `minor_version` respectively. This aligns with the
GCC community's recommended practice [1] and improves code clarity.

[1] https://gcc.gnu.org/pipermail/gcc-patches/2025-May/683881.html

gcc/ChangeLog:

	* config/riscv/gen-riscv-ext-texi.cc (struct version_t):rename
	major/minor to major_version/minor_version.

Signed-off-by: Songhe Zhu <zhusonghe@eswincomputing.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/gcc/config/riscv/gen-riscv-ext-texi.cc b/gcc/config/riscv/gen-riscv-ext-texi.cc
index e15fdbf..c29a375 100644
--- a/gcc/config/riscv/gen-riscv-ext-texi.cc
+++ b/gcc/config/riscv/gen-riscv-ext-texi.cc
@@ -6,22 +6,22 @@
 
 struct version_t
 {
-  int major;
-  int minor;
+  int major_version;
+  int minor_version;
   version_t (int major, int minor,
 	     enum riscv_isa_spec_class spec = ISA_SPEC_CLASS_NONE)
-    : major (major), minor (minor)
+    : major_version (major), minor_version (minor)
   {}
   bool operator<(const version_t &other) const
   {
-    if (major != other.major)
-      return major < other.major;
-    return minor < other.minor;
+    if (major_version != other.major_version)
+      return major_version < other.major_version;
+    return minor_version < other.minor_version;
   }
 
   bool operator== (const version_t &other) const
   {
-    return major == other.major && minor == other.minor;
+    return major_version == other.major_version && minor_version == other.minor_version;
   }
 };
 
@@ -39,7 +39,7 @@ print_ext_doc_entry (const std::string &ext_name, const std::string &full_name,
   printf ("@tab");
   for (const auto &version : unique_versions)
     {
-      printf (" %d.%d", version.major, version.minor);
+      printf (" %d.%d", version.major_version, version.minor_version);
     }
   printf ("\n");
   printf ("@tab %s", full_name.c_str ());