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Building LibSass with MingGW (makefiles)

First grab the latest MinGW for windows installer. Once it is installed, you can click on continue or open the Installation Manager via bin\mingw-get.exe.

You need to have the following components installed:

Next we need to install git for windows. You probably want to check the option to add it to the global path, but you do not need to install the unix tools.

If you want to run the spec test-suite you also need ruby and a few gems available. Grab the latest installer and make sure to add it the global path. Then install the missing gems:

gem install minitest

Mount the mingw root directory

As mentioned in the MinGW Getting Started guide, you should edit C:\MinGW\msys\1.0\etc\fstab to contain the following line:

C:\MinGW   /mingw

Starting a "MingGW" console

Create a batch file with this content:

@echo off
set PATH=C:\MinGW\bin;%PATH%
REM only needed if not already available
REM C:\MinGW\msys\1.0\msys.bat

Execute it and make sure these commands can be called: git, mingw32-make, rm and gcc! Once this is all set, you should be ready to compile libsass!

Get the sources

# using git is preferred
git clone https://github.com/sass/libsass.git
# only needed for sassc and/or testsuite
git clone https://github.com/sass/sassc.git libsass/sassc
git clone https://github.com/sass/sass-spec.git libsass/sass-spec

Decide for static or shared library

libsass can be built and linked as a static or as a shared library. The default is static. To change it you can set the BUILD environment variable:

set BUILD="shared"

Compile the library

mingw32-make -C libsass

Results can be found in

$ ls libsass/lib
libsass.a  libsass.dll  libsass.so

Run the spec test-suite

mingw32-make -C libsass test_build

Building via MingGW 64bit (makefiles)

Building libass to dll on window 64bit.

Download MinGW64 for windows7 64bit and unzip to "C:\mingw64".

Create a batch file with this content:

@echo off
set PATH=C:\mingw64\bin;%PATH%
set CC=gcc
REM only needed if not already available
REM C:\MinGW\msys\1.0\msys.bat

By default, mingw64 dll will depends on "​m​i​n​g​w​m​1​0​.​d​l​l​、​ ​l​i​b​g​c​c​​s​​d​w​2​-​1​.​d​l​l​", we can modify Makefile to fix this:(add "-static")

lib/libsass.dll: $(COBJECTS) $(OBJECTS) $(RCOBJECTS)
    $(MKDIR) lib
    $(CXX) -shared $(LDFLAGS) -o $@ $(COBJECTS) $(OBJECTS) $(RCOBJECTS) $(LDLIBS) -s -static -Wl,--subsystem,windows,--out-implib,lib/libsass.a

Compile the library

mingw32-make -C libsass

By the way, if you are using java jna, JNAerator is a good tool.