8253616: Change to GCC 10.2 for building on Linux at Oracle

doc/building.html

@@ -265,7 +265,7 @@ <h2 id="native-compiler-toolchain-requirements">Native Compiler (Toolchain) Requ
 <tbody>
 <tr class="odd">
 <td style="text-align: left;">Linux</td>
-<td style="text-align: left;">gcc 9.2.0</td>
+<td style="text-align: left;">gcc 10.2.0</td>
 </tr>
 <tr class="even">
 <td style="text-align: left;">macOS</td>
@@ -280,7 +280,7 @@ <h2 id="native-compiler-toolchain-requirements">Native Compiler (Toolchain) Requ
 <p>All compilers are expected to be able to compile to the C99 language standard, as some C99 features are used in the source code. Microsoft Visual Studio doesn't fully support C99 so in practice shared code is limited to using C99 features that it does support.</p>
 <h3 id="gcc">gcc</h3>
 <p>The minimum accepted version of gcc is 5.0. Older versions will generate a warning by <code>configure</code> and are unlikely to work.</p>
-<p>The JDK is currently known to be able to compile with at least version 9.2 of gcc.</p>
+<p>The JDK is currently known to be able to compile with at least version 10.2 of gcc.</p>
 <p>In general, any version between these two should be usable.</p>
 <h3 id="clang">clang</h3>
 <p>The minimum accepted version of clang is 3.5. Older versions will not be accepted by <code>configure</code>.</p>

doc/building.md

@@ -302,7 +302,7 @@ issues.
 
  Operating system   Toolchain version
  ------------------ -------------------------------------------------------
- Linux              gcc 9.2.0
+ Linux              gcc 10.2.0
  macOS              Apple Xcode 10.1 (using clang 10.0.0)
  Windows            Microsoft Visual Studio 2019 update 16.7.2
 
@@ -316,7 +316,7 @@ features that it does support.
 The minimum accepted version of gcc is 5.0. Older versions will generate a warning
 by `configure` and are unlikely to work.
 
-The JDK is currently known to be able to compile with at least version 9.2 of
+The JDK is currently known to be able to compile with at least version 10.2 of
 gcc.
 
 In general, any version between these two should be usable.

make/conf/jib-profiles.js

@@ -959,10 +959,10 @@ var getJibProfilesProfiles = function (input, common, data) {
 var getJibProfilesDependencies = function (input, common) {
 
     var devkit_platform_revisions = {
-        linux_x64: "gcc9.2.0-OL6.4+1.0",
+        linux_x64: "gcc10.2.0-OL6.4+1.0",
         macosx_x64: "Xcode11.3.1-MacOSX10.15+1.0",
         windows_x64: "VS2019-16.7.2+1.0",
-        linux_aarch64: "gcc9.2.0-OL7.6+1.0",
+        linux_aarch64: "gcc10.2.0-OL7.6+1.0",
         linux_arm: "gcc8.2.0-Fedora27+1.0",
         linux_ppc64le: "gcc8.2.0-Fedora27+1.0",
         linux_s390x: "gcc8.2.0-Fedora27+1.0"

make/devkit/Tools.gmk

@@ -87,35 +87,44 @@ endif
 # Define external dependencies
 
 # Latest that could be made to work.
-GCC_VER := 9.2.0
-ifeq ($(GCC_VER), 9.2.0)
+GCC_VER := 10.2.0
+ifeq ($(GCC_VER), 10.2.0)
+  gcc_ver := gcc-10.2.0
+  binutils_ver := binutils-2.35
+  ccache_ver := ccache-3.7.11
+  mpfr_ver := mpfr-4.1.0
+  gmp_ver := gmp-6.2.0
+  mpc_ver := mpc-1.1.0
+  gdb_ver := gdb-9.2
+  REQUIRED_MIN_MAKE_MAJOR_VERSION := 4
+else ifeq ($(GCC_VER), 9.2.0)
   gcc_ver := gcc-9.2.0
   binutils_ver := binutils-2.34
-  ccache_ver := 3.7.3
+  ccache_ver := ccache-3.7.3
   mpfr_ver := mpfr-3.1.5
   gmp_ver := gmp-6.1.2
   mpc_ver := mpc-1.0.3
   gdb_ver := gdb-8.3
 else ifeq ($(GCC_VER), 8.3.0)
   gcc_ver := gcc-8.3.0
   binutils_ver := binutils-2.32
-  ccache_ver := 3.7.3
+  ccache_ver := ccache-3.7.3
   mpfr_ver := mpfr-3.1.5
   gmp_ver := gmp-6.1.2
   mpc_ver := mpc-1.0.3
   gdb_ver := gdb-8.3
 else ifeq ($(GCC_VER), 7.3.0)
   gcc_ver := gcc-7.3.0
   binutils_ver := binutils-2.30
-  ccache_ver := 3.3.6
+  ccache_ver := ccache-3.3.6
   mpfr_ver := mpfr-3.1.5
   gmp_ver := gmp-6.1.2
   mpc_ver := mpc-1.0.3
   gdb_ver := gdb-8.1
 else ifeq ($(GCC_VER), 4.9.2)
   gcc_ver := gcc-4.9.2
   binutils_ver := binutils-2.25
-  ccache_ver := 3.2.1
+  ccache_ver := ccache-3.2.1
   mpfr_ver := mpfr-3.0.1
   gmp_ver := gmp-4.3.2
   mpc_ver := mpc-1.0.1
@@ -124,9 +133,20 @@ else
   $(error Unsupported GCC version)
 endif
 
+ifneq ($(REQUIRED_MIN_MAKE_MAJOR_VERSION),)
+  MAKE_MAJOR_VERSION := $(word 1,$(subst ., ,$(MAKE_VERSION)))
+  SUPPORTED_MAKE_VERSION := $(shell [ $(MAKE_MAJOR_VERSION) -ge $(REQUIRED_MIN_MAKE_MAJOR_VERSION) ] && echo true)
+  ifneq ($(SUPPORTED_MAKE_VERSION),true)
+    $(error "Make v$(MAKE_VERSION) is too old, must use v$(REQUIRED_MIN_MAKE_MAJOR_VERSION) or above")
+  endif
+endif
+
+ccache_ver_only := $(patsubst ccache-%,%,$(ccache_ver))
+
+
 GCC := http://ftp.gnu.org/pub/gnu/gcc/$(gcc_ver)/$(gcc_ver).tar.xz
 BINUTILS := http://ftp.gnu.org/pub/gnu/binutils/$(binutils_ver).tar.gz
-CCACHE := https://github.com/ccache/ccache/releases/download/v$(ccache_ver)/ccache-$(ccache_ver).tar.xz
+CCACHE := https://github.com/ccache/ccache/releases/download/v$(ccache_ver_only)/$(ccache_ver).tar.xz
 MPFR := https://www.mpfr.org/${mpfr_ver}/${mpfr_ver}.tar.bz2
 GMP := http://ftp.gnu.org/pub/gnu/gmp/${gmp_ver}.tar.bz2
 MPC := http://ftp.gnu.org/pub/gnu/mpc/${mpc_ver}.tar.gz