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configure
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configure
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#!/bin/bash
#
# Copyright (c) 2011-2015 Ryan Prichard
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# findTool(desc, commandList)
#
# Searches commandLine for the first command in the PATH and returns it.
# Prints an error and aborts the script if no match is found.
#
FINDTOOL_OUT=""
function findTool {
DESC=$1
OPTIONS=$2
for CMD in ${OPTIONS}; do
if (which $CMD &>/dev/null) then
echo "Found $DESC: $CMD"
FINDTOOL_OUT="$CMD"
return
fi
done
echo "Error: could not find $DESC. One of these should be in your PATH:"
for CMD in ${OPTIONS}; do
echo " * $CMD"
done
exit 1
}
IS_CYGWIN=0
IS_MSYS1=0
IS_MSYS2=0
# Link parts of the Cygwin binary statically to aid in redistribution? The
# binary still links dynamically against the main DLL. The MinGW binaries are
# also statically linked and therefore depend only on Windows DLLs. I started
# linking the Cygwin/MSYS binary statically, because G++ 4.7 changed the
# Windows C++ ABI.
UNIX_LDFLAGS_STATIC='-static -static-libgcc -static-libstdc++'
# Detect the environment -- Cygwin or MSYS.
case $(uname -s) in
CYGWIN*)
echo 'uname -s identifies a Cygwin environment.'
IS_CYGWIN=1
case $(uname -m) in
i686)
echo 'uname -m identifies an i686 environment.'
UNIX_CXX=i686-pc-cygwin-g++
MINGW_CXX=i686-w64-mingw32-g++
;;
x86_64)
echo 'uname -m identifies an x86_64 environment.'
UNIX_CXX=x86_64-pc-cygwin-g++
MINGW_CXX=x86_64-w64-mingw32-g++
;;
*)
echo 'Error: uname -m did not match either i686 or x86_64.'
exit 1
;;
esac
;;
MSYS*|MINGW*)
# MSYS2 notes:
# - MSYS2 offers two shortcuts to open an environment:
# - MinGW-w64 Win32 Shell. This env reports a `uname -s` of
# MINGW32_NT-6.1 on 32-bit Win7. The MinGW-w64 compiler
# (i686-w64-mingw32-g++.exe) is in the PATH.
# - MSYS2 Shell. `uname -s` instead reports MSYS_NT-6.1.
# The i686-w64-mingw32-g++ compiler is not in the PATH.
# - MSYS2 appears to use MinGW-w64, not the older mingw.org.
# MSYS notes:
# - `uname -s` is always MINGW32_NT-6.1 on Win7.
echo 'uname -s identifies an MSYS/MSYS2 environment.'
case $(uname -m) in
i686)
echo 'uname -m identifies an i686 environment.'
UNIX_CXX=i686-pc-msys-g++
if echo "$(uname -r)" | grep '^1[.]' > /dev/null; then
# The MSYS-targeting compiler for the original 32-bit-only
# MSYS does not recognize the -static-libstdc++ flag, and
# it does not work with -static, because it tries to link
# statically with the core MSYS library and fails.
#
# Distinguish between the two using the major version
# number of `uname -r`:
#
# MSYS uname -r: 1.0.18(0.48/3/2)
# MSYS2 uname -r: 2.0.0(0.284/5/3)
#
# This is suboptimal because MSYS2 is not actually the
# second version of MSYS--it's a brand-new fork of Cygwin.
#
IS_MSYS1=1
UNIX_LDFLAGS_STATIC=
MINGW_CXX=mingw32-g++
else
IS_MSYS2=1
MINGW_CXX=i686-w64-mingw32-g++.exe
fi
;;
x86_64)
echo 'uname -m identifies an x86_64 environment.'
IS_MSYS2=1
UNIX_CXX=x86_64-pc-msys-g++
MINGW_CXX=x86_64-w64-mingw32-g++
;;
*)
echo 'Error: uname -m did not match either i686 or x86_64.'
exit 1
;;
esac
;;
*)
echo 'Error: uname -s did not match either CYGWIN* or MINGW*.'
exit 1
;;
esac
# Search the PATH and pick the first match.
findTool "Cygwin/MSYS G++ compiler" "$UNIX_CXX"
UNIX_CXX=$FINDTOOL_OUT
findTool "MinGW G++ compiler" "$MINGW_CXX"
MINGW_CXX=$FINDTOOL_OUT
# Write config files.
echo Writing config.mk
echo UNIX_CXX=$UNIX_CXX > config.mk
echo UNIX_LDFLAGS_STATIC=$UNIX_LDFLAGS_STATIC >> config.mk
echo MINGW_CXX=$MINGW_CXX >> config.mk
if test $IS_MSYS1 = 1; then
echo UNIX_CXXFLAGS += -DWINPTY_TARGET_MSYS1 >> config.mk
# The MSYS1 MinGW compiler has a bug that prevents inclusion of algorithm
# and math.h in normal C++11 mode. The workaround is to enable the gnu++11
# mode instead. The bug was fixed on 2015-07-31, but as of 2016-02-26, the
# fix apparently hasn't been released. See
# http://ehc.ac/p/mingw/bugs/2250/.
echo MINGW_ENABLE_CXX11_FLAG := -std=gnu++11 >> config.mk
fi
if test -d .git -a -f .git/HEAD -a -f .git/index && git rev-parse HEAD >&/dev/null; then
echo "Commit info: git"
echo 'COMMIT_HASH = $(shell git rev-parse HEAD)' >> config.mk
echo 'COMMIT_HASH_DEP := config.mk .git/HEAD .git/index' >> config.mk
else
echo "Commit info: none"
echo 'COMMIT_HASH := none' >> config.mk
echo 'COMMIT_HASH_DEP := config.mk' >> config.mk
fi