How to build giflib in the MSYS?

How to build giflib in the MSYS?

 

Where to downloadthe source codes?

 

giflib-4.1.4.tar.bz2

 

How to extract it?

 

$ tar xvjf ./giflib-4.1.4.tar.bz2

 

How to build andinstall it?

 

Step1: Edit /etc/profile and add three entries.

export perllibdir=.:/usr/share/aclocal:/usr/share/aclocal-1.9:/usr/share/automake-1.9:$perllibdir

alias aclocal='aclocal --acdir=/usr/share/aclocal -I /usr/share/aclocal-1.9 -I /usr/share/automake-1.9'

alias automake='automake --libdir=/usr/share/automake-1.9'

My system use automake-1.9. If readers are different, pleaserevise this version.

 

Step2: Edit giflib-4.1.4/autogen.sh

#!/bin/sh

 

# This script runs commands necessary to generate a Makefile for libgif.

 

echo "Warning: This script will run configure for you -- if you need to pass"

echo "  arguments to configure, please give them as arguments to this script."

 

srcdir=`dirname $0`

test -z "$srcdir" && srcdir=.

 

THEDIR="`pwd`"

 

source /etc/profile

cd $THEDIR

 

cd $srcdir

 

aclocal

autoheader

libtoolize --automake

automake --add-missing

autoconf

automake

 

cd $THEDIR

 

$srcdir/configure $*

 

exit 0

 

Step3: Build and Install it

$ ./autogen.sh --prefix=/mingw --disable-shared --enable-static

$ MY_CURR_PATH=`pwd`

$ make CFLAGS="-Du_int32_t=uint32_t -I$MY_CURR_PATH/lib $CFLAGS"

$ cd ./util

$ gcc -Du_int32_t=uint32_t -I$MY_CURR_PATH/lib -Du_int32_t=uint32_t -I/lib     gifclrmp.c   -o gifclrmp –L$MY_CURR_PATH/lib -L$MY_CURR_PATH/lib/.libs –lgif –lgetarg

$ gcc -Du_int32_t=uint32_t -I$MY_CURR_PATH/lib -Du_int32_t=uint32_t -I/lib     gifrotat.c   -o gifrotat -L$MY_CURR_PATH/lib -L$MY_CURR_PATH/lib/.libs -lgif –lgetarg

$ cd ..

$ make install

 

[Summarization]

1. u_int32_t has not been defined in the source codes, so Iuse MACRO to replace it with ease.

2. The configure file utilizes relative path to indicateswhere the header files locate, and it will lead to compiler error. As a result,the absolute path is adopted.

3. Both gifclrmp and gifrotat don’t have a proper compilingrules, it will fail to compile lack of the relative libraries. It should be abug of configure.ac in the MSYS! As a result, I do with it manually:- (.