How to compile OpenJPEG in MinGW?

How to compile OpenJPEG in
MinGW?
The “How to
compile and install external libs of FFMPEG?” has described the simple way
to compile OpenJPEG for FFMPEG. However, if readers need generate static and
dynamical libraries at the same time, how to handle this requirement?
As the mentioned before,
referring to “How to
generate DLL files by GCC in the MinGW?” and “How to
use GCC to build DLL by DEF file in MinGW?”, we can do it by DEF file to
build DLL library for the usage of Windows.
To ease to re-use by readers, I
have modified the Makefile encapsulated by openjpeg_v1_3.tar.gz.
Please refer to the following content, and readers can replace the original one
by making full use of it.

# Linux makefile for OpenJPEG VER_MAJOR = 2 VER_MINOR = 1.3.0 SRCS = ./libopenjpeg/bio.c ./libopenjpeg/cio.c ./libopenjpeg/dwt.c ./libopenjpeg/event.c ./libopenjpeg/image.c ./libopenjpeg/j2k.c ./libopenjpeg/j2k_lib.c ./libopenjpeg/jp2.c ./libopenjpeg/jpt.c ./libopenjpeg/mct.c ./libopenjpeg/mqc.c ./libopenjpeg/openjpeg.c ./libopenjpeg/pi.c ./libopenjpeg/raw.c ./libopenjpeg/t1.c ./libopenjpeg/t2.c ./libopenjpeg/tcd.c ./libopenjpeg/tgt.c INCLS = ./libopenjpeg/bio.h ./libopenjpeg/cio.h ./libopenjpeg/dwt.h ./libopenjpeg/event.h ./libopenjpeg/fix.h ./libopenjpeg/image.h ./libopenjpeg/int.h ./libopenjpeg/j2k.h ./libopenjpeg/j2k_lib.h ./libopenjpeg/jp2.h ./libopenjpeg/jpt.h ./libopenjpeg/mct.h ./libopenjpeg/mqc.h ./libopenjpeg/openjpeg.h ./libopenjpeg/pi.h ./libopenjpeg/raw.h ./libopenjpeg/t1.h ./libopenjpeg/t2.h ./libopenjpeg/tcd.h ./libopenjpeg/tgt.h ./libopenjpeg/opj_malloc.h ./libopenjpeg/opj_includes.h INCLUDE = -Ilibopenjpeg # General configuration variables: CC = gcc AR = ar PREFIX = /mingw INSTALL_LIBDIR = $(PREFIX)/lib INSTALL_INCLUDE = $(PREFIX)/include # Converts cr/lf to just lf DOS2UNIX = dos2unix COMPILERFLAGS = -Wall -O3 -ffast-math -std=c99 -fPIC LIBRARIES = -lstdc++ MODULES = $(SRCS:.c=.o) CFLAGS = $(COMPILERFLAGS) $(INCLUDE) TARGET = openjpeg STATICLIB = lib$(TARGET).a SHAREDLIB = lib$(TARGET)-$(VER_MAJOR).$(VER_MINOR).dll LIBNAME = lib$(TARGET)-$(VER_MAJOR).$(VER_MINOR).dll.a default: all all: OpenJPEG dist: OpenJPEG install -d dist install -m 644 $(STATICLIB) dist install -m 755 $(SHAREDLIB) dist install -m 644 $(SHAREDLIB).lib dist ln -sf $(SHAREDLIB) dist/$(LIBNAME) install libopenjpeg/openjpeg.h dist dos2unix: @$(DOS2UNIX) $(SRCS) $(INCLS) OpenJPEG: $(STATICLIB) $(SHAREDLIB) .c.o: $(CC) $(CFLAGS) -c $< -o $@ $(STATICLIB): $(MODULES) $(AR) r $@ $(MODULES) $(SHAREDLIB): $(MODULES) $(CC) -s -shared -Wl,--output-def,$(SHAREDLIB).def -Wl,--out-implib,$(LIBNAME) -Wl,-Bsymbolic -o $@ $(MODULES) $(LIBRARIES) lib.exe /machine:i386 /def:$(SHAREDLIB).def /out:$(SHAREDLIB).lib install: OpenJPEG install -d '$(DESTDIR)$(INSTALL_LIBDIR)' '$(DESTDIR)$(INSTALL_INCLUDE)' install -m 644 $(STATICLIB) '$(DESTDIR)$(INSTALL_LIBDIR)' ranlib '$(DESTDIR)$(INSTALL_LIBDIR)/$(STATICLIB)' install -m 755 $(SHAREDLIB) '$(DESTDIR)$(INSTALL_LIBDIR)' ln -sf $(SHAREDLIB) '$(DESTDIR)$(INSTALL_LIBDIR)/$(LIBNAME)' install -m 644 libopenjpeg/openjpeg.h '$(DESTDIR)$(INSTALL_INCLUDE)' clean: rm -rf core dist/ u2dtmp* $(MODULES) $(STATICLIB) $(SHAREDLIB) $(LIBNAME) osx: make -f Makefile.osx osxinstall: make -f Makefile.osx install osxclean: make -f Makefile.osx clean

Summarization
1. To build correctly, please use the below
format.

$ make CFLAGS="-DWIN32 -DOPJ_STATIC $CFLAGS"

WIN32 and OPJ_STATIC are MACROs, and denote
that it is WIN32 and static format.
2. Please can use dist tag
to store them in your locate folder after finishing compiling source codes..

$ make dist

3. The original Makefile
has not provided uninstall tag, and readers can add it in
the light of installing configuration.