Remove gcc_version from gyp and gn files.

We used this to check if gcc is newer than 4.8 which is now required.
Remove the plumbing for this until we need to check gcc compiler versions
again, if ever.

No behavior change.

BUG=573778

Review URL: https://codereview.chromium.org/1577093002

Cr-Commit-Position: refs/heads/master@{#368706}

1 files changed, 8 insertions, 44 deletions

diff --git a/build/common.gypi b/build/common.gypi
index d21a3d3..9b8ca94 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1614,26 +1614,6 @@
       }, {
         'binutils_version%': 0,
       }],
-      # The version of GCC in use, set later in platforms that use GCC and have
-      # not explicitly chosen to build with clang. Currently, this means all
-      # platforms except Windows, Mac and iOS.
-      # TODO(glider): set clang to 1 earlier for ASan and TSan builds so that
-      # it takes effect here.
-      ['os_posix==1 and OS!="mac" and OS!="ios" and clang==0 and asan==0 and lsan==0 and tsan==0 and msan==0 and ubsan_vptr==0', {
-        'conditions': [
-          ['OS=="android"', {
-            'host_gcc_version%': '<!pymod_do_main(compiler_version host compiler)',
-            # We directly set the gcc version since we know what we use.
-            'gcc_version%': 49,
-          }, {
-            'host_gcc_version%': '<!pymod_do_main(compiler_version host compiler)',
-            'gcc_version%': '<!pymod_do_main(compiler_version target compiler)',
-          }],
-        ],
-      }, {
-        'host_gcc_version%': 0,
-        'gcc_version%': 0,
-      }],
       ['OS=="win" and "<!pymod_do_main(dir_exists <(directx_sdk_default_path))"=="True"', {
         'directx_sdk_path%': '<(directx_sdk_default_path)',
       }, {
@@ -3769,10 +3749,7 @@
                 'cflags': ['-fno-unwind-tables', '-fno-asynchronous-unwind-tables'],
                 'defines': ['NO_UNWIND_TABLES'],
               }],
-              # TODO(mostynb): shuffle clang/gcc_version/binutils_version
-              # definitions in to the right scope to use them when setting
-              # linux_use_debug_fission, so it can be used here alone.
-              ['linux_use_debug_fission==1 and linux_use_gold_flags==1 and (clang==1 or gcc_version>=48) and binutils_version>=223', {
+              ['linux_use_debug_fission==1 and linux_use_gold_flags==1 and binutils_version>=223', {
                 'cflags': ['-gsplit-dwarf'],
               }],
             ],
@@ -4052,17 +4029,6 @@
                         '-fuse-ld=gold',
                     ],
                     'conditions': [
-                      ['gcc_version==48 and clang==0', {
-                        'cflags': [
-                          # The following 5 options are disabled to save on
-                          # binary size in GCC 4.8.
-                          '-fno-partial-inlining',
-                          '-fno-early-inlining',
-                          '-fno-tree-copy-prop',
-                          '-fno-tree-loop-optimize',
-                          '-fno-move-loop-invariants',
-                        ],
-                      }],
                       ['arm_thumb==1', {
                         'cflags': [ '-mthumb-interwork' ],
                       }],
@@ -4703,7 +4669,7 @@
               '-Wl,--disable-new-dtags',
             ],
           }],
-          ['gcc_version>=47 and clang==0', {
+          ['clang==0', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags_cc': [
@@ -4714,7 +4680,7 @@
               }],
             ],
           }],
-          ['host_gcc_version>=47 and clang==0 and host_clang==0', {
+          ['clang==0 and host_clang==0', {
             'target_conditions': [
               ['_toolset=="host"', {
                 'cflags_cc': [
@@ -4725,7 +4691,7 @@
               }],
             ],
           }],
-          ['gcc_version>=47 and clang==0 and chromeos==1', {
+          ['clang==0 and chromeos==1', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags_cc': [
@@ -4735,7 +4701,7 @@
               }],
             ],
           }],
-          ['host_gcc_version>=47 and clang==0 and host_clang==0 and chromeos==1', {
+          ['clang==0 and host_clang==0 and chromeos==1', {
             'target_conditions': [
               ['_toolset=="host"', {
                 'cflags_cc': [
@@ -6031,14 +5997,12 @@
     # Don't warn about the "typedef 'foo' locally defined but not used"
     # for gcc 4.8 and higher.
     # TODO: remove this flag once all builds work. See crbug.com/227506
-    ['gcc_version>=48 and clang==0', {
+    ['clang==0', {
       'target_defaults': {
-        'cflags': [
-          '-Wno-unused-local-typedefs',
-        ],
+        'cflags': [ '-Wno-unused-local-typedefs' ],
       },
     }],
-    ['gcc_version>=48 and clang==0 and host_clang==1', {
+    ['clang==0 and host_clang==1', {
       'target_defaults': {
         'target_conditions': [
           ['_toolset=="host"', { 'cflags!': [ '-Wno-unused-local-typedefs' ]}],