[qcms] Fix build issue of qcms_tests for MIPS Linux

Building all target on MIPS will trigger issue with qcms_tests:

../mipsel-linux-gnu/Scrt1.o: In function `__start':
(.text+0x1c): undefined reference to `main'
clang: error: linker command failed with exit code 1

This change will make possible to build qcms_tests (without testing for
SSE2) for non ia32/x64 platforms.

BUG=130022, 590227
TEST=ninja -C out/Release all, qcms_tests -a -i sRGB.icc -o AdobeRGB1998.icc -s

Review URL: https://codereview.chromium.org/1734423002

Cr-Commit-Position: refs/heads/master@{#380124}

4 files changed, 34 insertions, 11 deletions

diff --git a/third_party/qcms/BUILD.gn b/third_party/qcms/BUILD.gn
index cfb042b..9c015d1 100644
--- a/third_party/qcms/BUILD.gn
+++ b/third_party/qcms/BUILD.gn
@@ -49,9 +49,11 @@ source_set("qcms") {
   }
 }
 
-if (!disable_qcms && (current_cpu == "x86" || current_cpu == "x64")) {
+if (!disable_qcms) {
   executable("qcms_tests") {
-    defines = [ "SSE2_ENABLE" ]
+    if (current_cpu == "x86" || current_cpu == "x64") {
+      defines = [ "SSE2_ENABLE" ]
+    }
     sources = [
       "src/tests/qcms_test_internal_srgb.c",
       "src/tests/qcms_test_main.c",
diff --git a/third_party/qcms/README.chromium b/third_party/qcms/README.chromium
index feb63dc..17ddb5d 100644
--- a/third_party/qcms/README.chromium
+++ b/third_party/qcms/README.chromium
@@ -141,6 +141,8 @@ The following changes have been made since qcms was imported:
    - https://code.google.com/p/chromium/issues/detail?id=495196
  - Add qcms_profile_ntsc_relative_gamut_size api
    - https://code.google.com/p/chromium/issues/detail?id=582870
+ - Fix build issue of qcms_tests for MIPS Linux
+   - https://code.google.com/p/chromium/issues/detail?id=590227
 
 For the Chromium changes, since the import, in a patch format run:
   git diff b8456f38 src
diff --git a/third_party/qcms/qcms.gyp b/third_party/qcms/qcms.gyp
index 9e19a44..2bade45 100644
--- a/third_party/qcms/qcms.gyp
+++ b/third_party/qcms/qcms.gyp
@@ -76,9 +76,6 @@
           'target_name': 'qcms_tests',
           'product_name': 'qcms_tests',
           'type': 'executable',
-          'defines': [
-            'SSE2_ENABLE',
-          ],
           'dependencies': [
             'qcms',
           ],
@@ -89,15 +86,18 @@
               ],
             }],
             ['target_arch=="ia32" or target_arch=="x64"', {
-              'sources': [
-                'src/tests/qcms_test_tetra_clut_rgba.c',
-                'src/tests/qcms_test_main.c',
-                'src/tests/qcms_test_internal_srgb.c',
-                'src/tests/qcms_test_munsell.c',
-                'src/tests/qcms_test_ntsc_gamut.c',
+              'defines': [
+                'SSE2_ENABLE',
               ],
             }],
           ],
+          'sources': [
+            'src/tests/qcms_test_main.c',
+            'src/tests/qcms_test_internal_srgb.c',
+            'src/tests/qcms_test_munsell.c',
+            'src/tests/qcms_test_ntsc_gamut.c',
+            'src/tests/qcms_test_tetra_clut_rgba.c',
+          ],
         },
       ],
     }],
diff --git a/third_party/qcms/src/tests/qcms_test_tetra_clut_rgba.c b/third_party/qcms/src/tests/qcms_test_tetra_clut_rgba.c
index e1fc5b9..81b6ee3 100644
--- a/third_party/qcms/src/tests/qcms_test_tetra_clut_rgba.c
+++ b/third_party/qcms/src/tests/qcms_test_tetra_clut_rgba.c
@@ -19,11 +19,26 @@ extern void qcms_transform_data_tetra_clut_rgba(qcms_transform *transform,
                                                 size_t length,
                                                 qcms_format_type output_format);
 
+#ifdef SSE2_ENABLE
 extern void qcms_transform_data_tetra_clut_rgba_sse2(qcms_transform *transform,
                                                      unsigned char *src,
                                                      unsigned char *dest,
                                                      size_t length,
                                                      qcms_format_type output_format);
+#else
+void qcms_transform_data_tetra_clut_rgba_dummy(qcms_transform *transform,
+                                               unsigned char *src,
+                                               unsigned char *dest,
+                                               size_t length,
+                                               qcms_format_type output_format)
+{
+    (void)(transform);
+    (void)(src);
+    (void)(dest);
+    (void)(length);
+    (void)(output_format);
+}
+#endif
 
 static float *create_lut(size_t lutSize)
 {
@@ -123,7 +138,11 @@ static int qcms_test_tetra_clut_rgba(size_t width,
         memcpy(src1, src0, length * pixel_size);
 
 #define TRANSFORM_TEST0 qcms_transform_data_tetra_clut_rgba
+#ifdef SSE2_ENABLE
 #define TRANSFORM_TEST1 qcms_transform_data_tetra_clut_rgba_sse2
+#else
+#define TRANSFORM_TEST1 qcms_transform_data_tetra_clut_rgba_dummy
+#endif
 
         TIME(TRANSFORM_TEST0(&transform0, src0, dst0, length, format), &time0);
         TIME(TRANSFORM_TEST1(&transform1, src1, dst1, length, format), &time1);