Initial commit of all previous Chrome build scripts.

chromium/patches/to_upstream/01_static_pthread_O2.patch

+diff -wurp -N orig/configure ffmpeg/configure
+--- orig/configure      2011-07-12 20:46:31.912987236 -0700
++++ ffmpeg/configure    2011-07-12 20:46:32.033313125 -0700
+@@ -1946,7 +1946,7 @@ elif $cc -v 2>&1 | grep -qi ^gcc; then
+         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
+         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
+     fi
+-    speed_cflags='-O3'
++    speed_cflags='-O2'
+     size_cflags='-Os'
+ elif $cc --version 2>/dev/null | grep -q Intel; then
+     cc_type=icc
+@@ -2098,6 +2098,7 @@ elif $cc -v 2>&1 | grep -q Open64; then
+     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
+     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
+     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
++# O2 produces smaller/faster code on P4 and same performance on Core/Atom.
+     speed_cflags='-O2'
+     size_cflags='-Os'
+     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
+@@ -2852,6 +2853,10 @@ if ! disabled pthreads && ! enabled w32t
+         add_extralibs -pthreads
+     elif check_func pthread_create -lpthreadGC2; then
+         add_extralibs -lpthreadGC2
++# static pthreads improves startup time
++    elif check_func pthread_create -lpthreadGC2 -lws2_32; then
++        add_cflags -DPTW32_STATIC_LIB
++        add_extralibs -lpthreadGC2 -lws2_32
+     elif ! check_lib pthread.h pthread_create -lpthread; then
+         disable pthreads
+     fi
+@@ -3085,7 +3090,8 @@ elif enabled ccc; then
+ elif enabled gcc; then
+     check_cflags -fno-tree-vectorize
+     check_cflags -Werror=implicit-function-declaration
+-    check_cflags -Werror=missing-prototypes
++# Removed to allow msys gcc 4.2.1-sjlj to compile
++#   check_cflags -Werror=missing-prototypes
+ elif enabled llvm_gcc; then
+     check_cflags -mllvm -stack-alignment=16
+ elif enabled clang; then
+diff -wurp -N orig/libavcodec/allcodecs.c ffmpeg/libavcodec/allcodecs.c
+--- orig/libavcodec/allcodecs.c 2011-07-12 20:46:31.952992143 -0700
++++ ffmpeg/libavcodec/allcodecs.c       2011-07-12 20:46:32.033313125 -0700
+@@ -45,6 +45,15 @@
+           extern AVBitStreamFilter ff_##x##_bsf; \
+           if(CONFIG_##X##_BSF)     av_register_bitstream_filter(&ff_##x##_bsf); }
+ 
++#ifdef PTW32_STATIC_LIB
++#include "pthread.h"
++static void detach_ptw32(void)
++{
++    pthread_win32_thread_detach_np();
++    pthread_win32_process_detach_np();
++}
++#endif
++
+ void avcodec_register_all(void)
+ {
+     static int initialized;
+@@ -53,6 +62,11 @@ void avcodec_register_all(void)
+         return;
+     initialized = 1;
+ 
++#ifdef PTW32_STATIC_LIB
++    pthread_win32_process_attach_np();
++    pthread_win32_thread_attach_np();
++    atexit(detach_ptw32);
++#endif
+     /* hardware accelerators */
+     REGISTER_HWACCEL (H263_VAAPI, h263_vaapi);
+     REGISTER_HWACCEL (H264_DXVA2, h264_dxva2);