Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/protoc-artifacts/build-protoc.sh

-#!/bin/bash
-
-# Builds protoc executable into target/protoc.exe
-# To be run from Maven.
-# Usage: build-protoc.sh <OS> <ARCH>
-# <OS> and <ARCH> are ${os.detected.name} and ${os.detected.arch} from os-maven-plugin
-OS=$1
-ARCH=$2
-
-if [[ $# < 2 ]]; then
-  echo "No arguments provided. This script is intended to be run from Maven."
-  exit 1
-fi
-
-# Under Cygwin, bash doesn't have these in PATH when called from Maven which
-# runs in Windows version of Java.
-export PATH="/bin:/usr/bin:$PATH"
-
-############################################################################
-# Helper functions
-############################################################################
-E_PARAM_ERR=98
-E_ASSERT_FAILED=99
-
-# Usage:
-fail()
-{
-  echo "ERROR: $1"
-  echo
-  exit $E_ASSERT_FAILED
-}
-
-# Usage: assertEq VAL1 VAL2 $LINENO
-assertEq ()
-{
-  lineno=$3
-  if [ -z "$lineno" ]; then
-    echo "lineno not given"
-    exit $E_PARAM_ERR
-  fi
-
-  if [[ "$1" != "$2" ]]; then
-    echo "Assertion failed:  \"$1\" == \"$2\""
-    echo "File \"$0\", line $lineno"    # Give name of file and line number.
-    exit $E_ASSERT_FAILED
-  fi
-}
-
-# Checks the artifact is for the expected architecture
-# Usage: checkArch <path-to-protoc>
-checkArch ()
-{
-  echo
-  echo "Checking file format ..."
-  if [[ "$OS" == windows || "$OS" == linux ]]; then
-    format="$(objdump -f "$1" | grep -o "file format .*$" | grep -o "[^ ]*$")"
-    echo Format=$format
-    if [[ "$OS" == linux ]]; then
-      if [[ "$ARCH" == x86_32 ]]; then
-        assertEq $format "elf32-i386" $LINENO
-      elif [[ "$ARCH" == x86_64 ]]; then
-        assertEq $format "elf64-x86-64" $LINENO
-      else
-        fail "Unsupported arch: $ARCH"
-      fi
-    else
-      # $OS == windows
-      if [[ "$ARCH" == x86_32 ]]; then
-        assertEq $format "pei-i386" $LINENO
-      elif [[ "$ARCH" == x86_64 ]]; then
-        assertEq $format "pei-x86-64" $LINENO
-      else
-        fail "Unsupported arch: $ARCH"
-      fi
-    fi
-  elif [[ "$OS" == osx ]]; then
-    format="$(file -b "$1" | grep -o "[^ ]*$")"
-    echo Format=$format
-    if [[ "$ARCH" == x86_32 ]]; then
-      assertEq $format "i386" $LINENO
-    elif [[ "$ARCH" == x86_64 ]]; then
-      assertEq $format "x86_64" $LINENO
-    else
-      fail "Unsupported arch: $ARCH"
-    fi
-  else
-    fail "Unsupported system: $OS"
-  fi
-  echo
-}
-
-# Checks the dependencies of the artifact. Artifacts should only depend on
-# system libraries.
-# Usage: checkDependencies <path-to-protoc>
-checkDependencies ()
-{
-  if [[ "$OS" == windows ]]; then
-    dump_cmd='objdump -x '"$1"' | fgrep "DLL Name"'
-    white_list="KERNEL32\.dll\|msvcrt\.dll"
-  elif [[ "$OS" == linux ]]; then
-    dump_cmd='ldd '"$1"
-    if [[ "$ARCH" == x86_32 ]]; then
-      white_list="linux-gate\.so\.1\|libpthread\.so\.0\|libm\.so\.6\|libc\.so\.6\|ld-linux\.so\.2"
-    elif [[ "$ARCH" == x86_64 ]]; then
-      white_list="linux-vdso\.so\.1\|libpthread\.so\.0\|libm\.so\.6\|libc\.so\.6\|ld-linux-x86-64\.so\.2"
-    fi
-  elif [[ "$OS" == osx ]]; then
-    dump_cmd='otool -L '"$1"' | fgrep dylib'
-    white_list="libz\.1\.dylib\|libstdc++\.6\.dylib\|libSystem\.B\.dylib"
-  fi
-  if [[ -z "$white_list" || -z "$dump_cmd" ]]; then
-    fail "Unsupported platform $OS-$ARCH."
-  fi
-  echo "Checking for expected dependencies ..."
-  eval $dump_cmd | grep -i "$white_list" || fail "doesn't show any expected dependencies"
-  echo "Checking for unexpected dependencies ..."
-  eval $dump_cmd | grep -i -v "$white_list"
-  ret=$?
-  if [[ $ret == 0 ]]; then
-    fail "found unexpected dependencies (listed above)."
-  elif [[ $ret != 1 ]]; then
-    fail "Error when checking dependencies."
-  fi  # grep returns 1 when "not found", which is what we expect
-  echo "Dependencies look good."
-  echo
-}
-############################################################################
-
-echo "Building protoc, OS=$OS ARCH=$ARCH"
-
-# Nested double quotes are unintuitive, but it works.
-cd "$(dirname "$0")"
-
-WORKING_DIR=$(pwd)
-CONFIGURE_ARGS="--disable-shared"
-
-MAKE_TARGET="protoc"
-if [[ "$OS" == windows ]]; then
-  MAKE_TARGET="${MAKE_TARGET}.exe"
-fi
-
-# Override the default value set in configure.ac that has '-g' which produces
-# huge binary.
-CXXFLAGS="-DNDEBUG"
-LDFLAGS=""
-
-if [[ "$(uname)" == CYGWIN* ]]; then
-  assertEq "$OS" windows $LINENO
-  # Use mingw32 compilers because executables produced by Cygwin compiler
-  # always have dependency on Cygwin DLL.
-  if [[ "$ARCH" == x86_64 ]]; then
-    CONFIGURE_ARGS="$CONFIGURE_ARGS --host=x86_64-w64-mingw32"
-  elif [[ "$ARCH" == x86_32 ]]; then
-    CONFIGURE_ARGS="$CONFIGURE_ARGS --host=i686-pc-mingw32"
-  else
-    fail "Unsupported arch by CYGWIN: $ARCH"
-  fi
-elif [[ "$(uname)" == MINGW32* ]]; then
-  assertEq "$OS" windows $LINENO
-  assertEq "$ARCH" x86_32 $LINENO
-elif [[ "$(uname)" == MINGW64* ]]; then
-  assertEq "$OS" windows $LINENO
-  assertEq "$ARCH" x86_64 $LINENO
-elif [[ "$(uname)" == Linux* ]]; then
-  if [[ "$OS" == linux ]]; then
-    if [[ "$ARCH" == x86_64 ]]; then
-      CXXFLAGS="$CXXFLAGS -m64"
-    elif [[ "$ARCH" == x86_32 ]]; then
-      CXXFLAGS="$CXXFLAGS -m32"
-    else
-      fail "Unsupported arch: $ARCH"
-    fi
-  elif [[ "$OS" == windows ]]; then
-    # Cross-compilation for Windows
-    # TODO(zhangkun83) MinGW 64 always adds dependency on libwinpthread-1.dll,
-    # which is undesirable for repository deployment.
-    CONFIGURE_ARGS="$CONFIGURE_ARGS"
-    if [[ "$ARCH" == x86_64 ]]; then
-      CONFIGURE_ARGS="$CONFIGURE_ARGS --host=x86_64-w64-mingw32"
-    elif [[ "$ARCH" == x86_32 ]]; then
-      CONFIGURE_ARGS="$CONFIGURE_ARGS --host=i686-w64-mingw32"
-    else
-      fail "Unsupported arch: $ARCH"
-    fi
-  else
-    fail "Cannot build $OS on $(uname)"
-  fi
-elif [[ "$(uname)" == Darwin* ]]; then
-  assertEq "$OS" osx $LINENO
-  # Make the binary compatible with OSX 10.7 and later
-  CXXFLAGS="$CXXFLAGS -mmacosx-version-min=10.7"
-  if [[ "$ARCH" == x86_64 ]]; then
-    CXXFLAGS="$CXXFLAGS -m64"
-  elif [[ "$ARCH" == x86_32 ]]; then
-    CXXFLAGS="$CXXFLAGS -m32"
-  else
-    fail "Unsupported arch: $ARCH"
-  fi
-else
-  fail "Unsupported system: $(uname)"
-fi
-
-# Statically link libgcc and libstdc++.
-# -s to produce stripped binary.
-# And they don't work under Mac.
-if [[ "$OS" != osx ]]; then
-  LDFLAGS="$LDFLAGS -static-libgcc -static-libstdc++ -s"
-fi
-
-export CXXFLAGS LDFLAGS
-
-TARGET_FILE=target/protoc.exe
-
-cd "$WORKING_DIR"/.. && ./configure $CONFIGURE_ARGS &&
-  cd src && make clean && make google/protobuf/stubs/pbconfig.h $MAKE_TARGET &&
-  cd "$WORKING_DIR" && mkdir -p target &&
-  (cp ../src/protoc $TARGET_FILE || cp ../src/protoc.exe $TARGET_FILE) ||
-  exit 1
-
-if [[ "$OS" == osx ]]; then
-  # Since Mac linker doesn't accept "-s", we need to run strip
-  strip $TARGET_FILE || exit 1
-fi
-
-checkArch $TARGET_FILE && checkDependencies $TARGET_FILE