libaom: defer RTCD header generation to cmake

We only need to format the files generated by cmake.
This causes no change to the current configuration.
This facilitates upcoming changes to the generator.

Bug: 783519
Change-Id: If8e51f082881728c46a8ee9924db5d2c3ac13d11
Reviewed-on: https://chromium-review.googlesource.com/1132267Reviewed-by: Johann Koenig <johannkoenig@google.com>
Commit-Queue: Johann Koenig <johannkoenig@google.com>
Cr-Commit-Position: refs/heads/master@{#574208}

third_party/libaom/cmake_update.sh

@@ -60,55 +60,6 @@ fi
 # find_duplicates
 # We may have enough targets to avoid re-implementing this.
 
-# Generate libaom.config file for rtcd.pl.
-# $1 - platform/arch
-function print_config {
-  combined_config="$(cat ${CFG}/${1}/config/aom_config.h | grep -E ' +[01] *$')"
-  combined_config="$(echo "$combined_config" | grep -v DO1STROUNDING)"
-  combined_config="$(echo "$combined_config" | sed 's/[ \t]//g')"
-  combined_config="$(echo "$combined_config" | sed 's/.*define//')"
-  combined_config="$(echo "$combined_config" | sed 's/0$/=no/')"
-  combined_config="$(echo "$combined_config" | sed 's/1$/=yes/')"
-  echo "$combined_config" | sort | uniq
-}
-
-# Generate *_rtcd.h files.
-# $1 - Header file directory.
-# $2 - Architecture.
-# $3 - Optional - additional arguments to pass through to rtcd.pl.
-function gen_rtcd_header {
-  echo "Generate ${1} RTCD files."
-
-  print_config ${1} > "libaom.config"
-
-  ${SRC}/build/make/rtcd.pl \
-    --arch=${2} \
-    --sym=av1_rtcd ${3} \
-    --config=libaom.config \
-    "${SRC}/av1/common/av1_rtcd_defs.pl" \
-    > "${CFG}/${1}/config/av1_rtcd.h"
-
-  clang-format -i "${CFG}/${1}/config/av1_rtcd.h"
-
-  ${SRC}/build/make/rtcd.pl \
-    --arch=${2} \
-    --sym=aom_scale_rtcd ${3} \
-    --config=libaom.config \
-    "${SRC}/aom_scale/aom_scale_rtcd.pl" \
-    > "${CFG}/${1}/config/aom_scale_rtcd.h"
-
-  clang-format -i "${CFG}/${1}/config/aom_scale_rtcd.h"
-
-  ${SRC}/build/make/rtcd.pl \
-    --arch=${2} \
-    --sym=aom_dsp_rtcd ${3} \
-    --config=libaom.config \
-    "${SRC}/aom_dsp/aom_dsp_rtcd_defs.pl" \
-    > "${CFG}/${1}/config/aom_dsp_rtcd.h"
-
-  clang-format -i "${CFG}/${1}/config/aom_dsp_rtcd.h"
-}
-
 # Generate Config files.
 # $1 - Header file directory.
 # $2 - cmake options.
@@ -123,6 +74,9 @@ function gen_config_files {
   esac
 
   cp config/aom_config.{h,c,asm} "${CFG}/${1}/config/"
+
+  cp config/*_rtcd.h "${CFG}/${1}/config/"
+  clang-format -i "${CFG}/${1}/config/"*_rtcd.h
 }
 
 function update_readme {
@@ -160,15 +114,12 @@ gen_config_files linux/generic "-DAOM_TARGET_CPU=generic ${all_platforms}"
 # libaom_srcs.gni and aom_version.h are shared.
 cp libaom_srcs.gni "${BASE}"
 cp config/aom_version.h "${CFG}/config/"
-gen_rtcd_header linux/generic generic
 
 reset_dirs linux/ia32
 gen_config_files linux/ia32 "${toolchain}/x86-linux.cmake ${all_platforms}"
-gen_rtcd_header linux/ia32 x86 #--disable-avx2
 
 reset_dirs linux/x64
 gen_config_files linux/x64 "${all_platforms}"
-gen_rtcd_header linux/x64 x86_64 #--disable-avx2
 
 # Windows looks like linux but with some minor tweaks. Cmake doesn't generate VS
 # project files on linux otherwise we would not resort to these hacks.
@@ -202,20 +153,16 @@ egrep "#define [A-Z0-9_]+ [01]" "${CFG}/win/x64/config/aom_config.h" \
 reset_dirs linux/arm
 gen_config_files linux/arm \
   "${toolchain}/armv7-linux-gcc.cmake -DENABLE_NEON=0 ${all_platforms}"
-gen_rtcd_header linux/arm armv7 --disable-neon
 
 reset_dirs linux/arm-neon
 gen_config_files linux/arm-neon "${toolchain}/armv7-linux-gcc.cmake ${all_platforms}"
-gen_rtcd_header linux/arm-neon armv7
 
 reset_dirs linux/arm-neon-cpu-detect
 gen_config_files linux/arm-neon-cpu-detect \
   "${toolchain}/armv7-linux-gcc.cmake -DCONFIG_RUNTIME_CPU_DETECT=1 ${all_platforms}"
-gen_rtcd_header linux/arm-neon-cpu-detect armv7
 
 reset_dirs linux/arm64
 gen_config_files linux/arm64 "${toolchain}/arm64-linux-gcc.cmake ${all_platforms}"
-gen_rtcd_header linux/arm64 arm64
 
 cd "${SRC}"
 update_readme