Add 'neozip/' from commit 'c2712b8a345191f6ed79558c089777df94590087'

git-subtree-dir: neozip
git-subtree-mainline: b1e34e861b5d732afe828d58aad2c638135061fd
git-subtree-split: c2712b8a345191f6ed79558c089777df94590087

1 files changed, 180 insertions, 0 deletions

diff --git a/neozip/test/pkgcheck.sh b/neozip/test/pkgcheck.sh
new file mode 100644
index 0000000000..29668a9f4f
--- /dev/null
+++ b/neozip/test/pkgcheck.sh
@@ -0,0 +1,180 @@
+#!/bin/sh
+
+usage() {
+  cat <<"_EOF_"
+Usage: sh test/pkgcheck.sh [--zlib-compat]
+
+Verifies that the various build systems produce identical results on a Unixlike system.
+If --zlib-compat, tests with zlib compatible builds.
+
+To build the 32 bit version for the current 64 bit arch:
+
+$ sudo apt install ninja-build diffoscope gcc-multilib
+$ export CMAKE_ARGS="-DCMAKE_C_FLAGS=-m32" CFLAGS=-m32 LDFLAGS=-m32
+$ sh test/pkgcheck.sh
+
+To cross-build, install the appropriate qemu and gcc packages,
+and set the environment variables used by configure or cmake.
+On Ubuntu, for example (values taken from .github/workflows/pkgconf.yml):
+
+arm HF:
+$ sudo apt install ninja-build diffoscope qemu gcc-arm-linux-gnueabihf libc6-dev-armhf-cross
+$ export CHOST=arm-linux-gnueabihf
+$ export CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-arm.cmake -DCMAKE_C_COMPILER_TARGET=${CHOST}"
+
+aarch64:
+$ sudo apt install ninja-build diffoscope qemu gcc-aarch64-linux-gnu libc6-dev-arm64-cross
+$ export CHOST=aarch64-linux-gnu
+$ export CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-aarch64.cmake -DCMAKE_C_COMPILER_TARGET=${CHOST}"
+
+ppc (32 bit big endian):
+$ sudo apt install ninja-build diffoscope qemu gcc-powerpc-linux-gnu libc6-dev-powerpc-cross
+$ export CHOST=powerpc-linux-gnu
+$ export CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-powerpc.cmake"
+
+ppc64le:
+$ sudo apt install ninja-build diffoscope qemu gcc-powerpc64le-linux-gnu libc6-dev-ppc64el-cross
+$ export CHOST=powerpc64le-linux-gnu
+$ export CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-powerpc64le.cmake"
+
+then:
+$ export CC=${CHOST}-gcc
+$ sh test/pkgcheck.sh [--zlib-compat]
+
+Note: on Mac, you may also need to do 'sudo xcode-select -r' to get cmake to match configure/make's behavior (i.e. omit -isysroot).
+_EOF_
+}
+
+set -ex
+
+case "$1" in
+--zlib-compat)
+  suffix=""
+  CMAKE_ARGS="$CMAKE_ARGS -DZLIB_COMPAT=ON"
+  CONFIGURE_ARGS="$CONFIGURE_ARGS --zlib-compat"
+  ;;
+"")
+  suffix="-ng"
+  ;;
+*)
+  echo "Unknown arg '$1'"
+  usage
+  exit 1
+  ;;
+esac
+
+if ! test -f "configure"
+then
+  echo "Please run from top of source tree"
+  exit 1
+fi
+
+# Tell GNU's ld etc. to use Jan 1 1970 when embedding timestamps
+# Probably only needed on older systems (ubuntu 14.04, BSD?)
+export SOURCE_DATE_EPOCH=0
+case $(uname) in
+Darwin)
+  # Tell Apple's ar etc. to use zero timestamps
+  export ZERO_AR_DATE=1
+  # What CPU are we running on, exactly?
+  sysctl -n machdep.cpu.brand_string
+  sysctl -n machdep.cpu.features
+  if test "$(uname -m)" = "x86_64"
+  then
+    sysctl -n machdep.cpu.leaf7_features
+    sysctl -n machdep.cpu.extfeatures
+  fi
+  ;;
+esac
+
+# Use same compiler for make and cmake builds
+if test "$CC"x = ""x
+then
+  if clang --version
+  then
+    export CC=clang
+  elif gcc --version
+  then
+    export CC=gcc
+  fi
+fi
+
+# New build system
+# Happens to delete top-level zconf.h
+# (which itself is a bug, https://github.com/madler/zlib/issues/162 )
+# which triggers another bug later in configure,
+# https://github.com/madler/zlib/issues/499
+rm -rf btmp2 pkgtmp2
+mkdir btmp2 pkgtmp2
+export DESTDIR=$(pwd)/pkgtmp2
+cd btmp2
+  cmake -G Ninja ${CMAKE_ARGS} ..
+  ninja -v
+  ninja install
+cd ..
+
+# Original build system
+rm -rf btmp1 pkgtmp1
+mkdir btmp1 pkgtmp1
+export DESTDIR=$(pwd)/pkgtmp1/
+cd btmp1
+  case $(uname) in
+  Darwin)
+    export LDFLAGS="-Wl,-headerpad_max_install_names"
+    ;;
+  esac
+  ../configure $CONFIGURE_ARGS
+  make -j2
+  make install
+cd ..
+
+repack_ar() {
+  archive1=$(cd pkgtmp1; find . -type f -name '*.a'; cd ..)
+  archive2=$(cd pkgtmp2; find . -type f -name '*.a'; cd ..)
+  if ! cmp --silent pkgtmp1/$archive1 pkgtmp2/$archive2
+  then
+    echo "libz$suffix.a does not match.  Probably filenames differ (.o vs .c.o).  Unpacking and renaming..."
+    # Note: %% is posix shell syntax meaning "Remove Largest Suffix Pattern", see
+    # https://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_02
+    cd pkgtmp1; ar x $archive1; rm $archive1; cd ..
+    cd pkgtmp2; ar x $archive2; rm $archive2; for a in *.c.o; do mv $a ${a%%.c.o}.o; done; cd ..
+    # Also, remove __.SYMDEF SORTED if present, as it has those funky .c.o names embedded in it.
+    rm -f pkgtmp[12]/__.SYMDEF\ SORTED
+  fi
+}
+
+case $(uname) in
+Darwin)
+  # Remove the build uuid.
+  dylib1=$(find pkgtmp1 -type f -name '*.dylib*')
+  dylib2=$(find pkgtmp2 -type f -name '*.dylib*')
+  strip -x -no_uuid "$dylib1"
+  strip -x -no_uuid "$dylib2"
+  ;;
+esac
+
+# Remove cmake target files to avoid mismatch with configure
+find pkgtmp2 -type f -name '*.cmake' -exec rm '{}' \;
+
+# The ar on newer systems defaults to -D (i.e. deterministic),
+# but FreeBSD 12.1, Debian 8, and Ubuntu 14.04 seem to not do that.
+# I had trouble passing -D safely to the ar inside CMakeLists.txt,
+# so punt and unpack the archive if needed before comparing.
+# Also, cmake uses different .o suffix anyway...
+repack_ar
+
+if diff -Nur pkgtmp1 pkgtmp2
+then
+  echo pkgcheck-cmake-bits-identical PASS
+else
+  echo pkgcheck-cmake-bits-identical FAIL
+  dylib1=$(find pkgtmp1 -type f -name '*.dylib*' -print -o -type f -name '*.so.*' -print)
+  dylib2=$(find pkgtmp2 -type f -name '*.dylib*' -print -o -type f -name '*.so.*' -print)
+  diffoscope $dylib1 $dylib2 | cat
+  exit 1
+fi
+
+rm -rf btmp1 btmp2 pkgtmp1 pkgtmp2
+
+# any failure would have caused an early exit already
+echo "pkgcheck: PASS"