How to build giflib in the MSYS?

How to build giflib in the MSYS?


Where to download
the source codes?


giflib-4.1.4.tar.bz2

How to extract it?

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

How to build and
install 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, please
revise 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 I
use MACRO to replace it with ease.
2. The configure file utilizes relative path to indicates
where 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 compiling
rules, it will fail to compile lack of the relative libraries. It should be a
bug of configure.ac in the MSYS! As a result, I do with it manually:- (.