ci: Do not hide ci directory (#6410)

ci/before_script.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+
+if [[ -n "${CI_TARGET}" ]]; then
+  exit
+fi
+
+CI_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${CI_DIR}/common/build.sh"
+
+# Test some of the configuration variables.
+if [[ -n "${GCOV}" ]] && [[ ! $(type -P "${GCOV}") ]]; then
+  echo "\$GCOV: '${GCOV}' is not executable."
+  exit 1
+fi
+if [[ -n "${LLVM_SYMBOLIZER}" ]] && [[ ! $(type -P "${LLVM_SYMBOLIZER}") ]]; then
+  echo "\$LLVM_SYMBOLIZER: '${LLVM_SYMBOLIZER}' is not executable."
+  exit 1
+fi
+
+if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
+  # Adds user to a dummy group.
+  # That allows to test changing the group of the file by `os_fchown`.
+  sudo dscl . -create /Groups/chown_test
+  sudo dscl . -append /Groups/chown_test GroupMembership "${USER}"
+fi
+
+# Compile dependencies.
+build_deps
+
+rm -rf "${LOG_DIR}"
+mkdir -p "${LOG_DIR}"