6e2b7be983
- previously hidden as Detail::[IO]FstreamAllocator, now exposed
directly as [io]fstreamPointer, which allows reuse for
std::ifstream, std::ofstream wrapping, without the additional
ISstream, OSstream layers.
These stream pointers have some characteristics similar to a
unique_ptr.
- restrict direct gzstream usage to two files (fstreamPointers.C,
gzstream.C) which improves localization and makes it simpler to
enable/disable with the `HAVE_LIBZ` define.
The HAVE_LIBZ define is currently simply hard-coded in the
Make/options.
If compiled WITHOUT libz support:
- reading gz files : FatalError
- writing gz files : emit warning and downgrade to uncompressed
- warn if compression is specified in the case controlDict
and downgrade to uncompressed
ENH: minor updates to gzstream interface for C++11
- support construct/open with std::string for the file names.
CONFIG: provisioning for have_libz detection as wmake/script
127 lines
2.8 KiB
Bash
127 lines
2.8 KiB
Bash
#----------------------------------*-sh-*--------------------------------------
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# ========= |
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# \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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# \\ / O peration |
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# \\ / A nd | www.openfoam.com
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# \\/ M anipulation |
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#------------------------------------------------------------------------------
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# Copyright (C) 2020 OpenCFD Ltd.
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#------------------------------------------------------------------------------
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# License
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# This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
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#
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# Script
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# have_libz
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#
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# Description
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# Detection/setup of LIBZ (zlib)
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#
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# Requires
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# None
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#
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# Functions provided
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# have_libz, no_libz, echo_libz, search_libz
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#
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# Variables set on success
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# HAVE_LIBZ - as per GNU autoconf
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# LIBZ_INC_DIR
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# LIBZ_LIB_DIR
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#
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#------------------------------------------------------------------------------
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. ${WM_PROJECT_DIR:?}/wmake/scripts/sysFunctions # General system functions
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#------------------------------------------------------------------------------
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# Reset
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no_libz()
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{
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unset HAVE_LIBZ LIBZ_INC_DIR LIBZ_LIB_DIR
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}
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# Report
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echo_libz()
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{
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echo "libz=${HAVE_LIBZ:-false}"
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echo "include=\"$LIBZ_INC_DIR\""
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echo "library=\"$LIBZ_LIB_DIR\""
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}
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# Search
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# $1 : prefix (*_ARCH_PATH, system, ...)
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#
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# On success, return 0 and export variables
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# -> HAVE_LIBZ, LIBZ_INC_DIR, LIBZ_LIB_DIR
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search_libz()
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{
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local warn # warn="==> skip libz"
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local incName="zlib.h"
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local libName="libz"
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local prefix="${1:-system}"
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local header library
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# ----------------------------------
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if isNone "$prefix"
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then
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[ -n "$warn" ] && echo "$warn (disabled)"
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return 1
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elif hasAbsdir "$prefix"
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then
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header=$(findFirstFile "$prefix/include/$incName")
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library=$(findExtLib "$libName")
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elif isSystem "$prefix"
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then
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header=$(findSystemInclude -name="$incName")
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prefix=$(sysPrefix "$header")
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else
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unset prefix
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fi
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# ----------------------------------
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# Header
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[ -n "$header" ] || {
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[ -n "$warn" ] && echo "$warn (no header)"
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return 2
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}
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# Library
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[ -n "$library" ] \
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|| library=$(findLibrary -prefix="$prefix" -name="$libName") \
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|| {
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[ -n "$warn" ] && echo "$warn (no library)"
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return 2
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}
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# ----------------------------------
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# OK
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export HAVE_LIBZ=true
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export LIBZ_INC_DIR="${header%/*}" # Basename
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export LIBZ_LIB_DIR="${library%/*}" # Basename
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}
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# Output as per search_* function
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have_libz()
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{
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search_libz system
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}
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#------------------------------------------------------------------------------
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# Reset
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no_libz
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# Test/query
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case "$1" in
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-test)
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have_libz
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echo_libz
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;;
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esac
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#------------------------------------------------------------------------------
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