How to install and open the PHP GD library under Linux

# tar xvzf zlib-1.2.3.tar.gz
# cd zlib-1.2.3
# ./configure
# make && make install

3. Install freetype

# tar xvzf freetype-1.3.1.tar.gz
# cd freetype-1.3.1
# ./configure --prefix=/usr/local/freetype
# make && make install

There are multiple lines of errors similar to: ftdump.c:172:1: error: pasting "." and "glyph_object" does not give a valid preprocessing token

Solution: Modify the code in test/ftdump.c: Change Print_Mem( memory_footprint.##field, string ) to: Print_Mem( memory_footprint.field, string ) Change #define FOOTPRINT( field ) Save_Memory( &memory_footprint.##field ) to: #define FOOTPRINT( field ) Save_Memory( &memory_footprint.field ) Remake && make install Or modify Makefile.in:

1. Remove all: tttest in ttlib tttest ttpo
2. Delete
install:
 cd $(FTLIBDIR); $(MAKE) -f $(MAKEFILE) install
 cd $(FTTESTDIR); $ (MAKE) -f $(MAKEFILE) install
 cd $(FTPODIR); $(MAKE) install
 cd $(FTTESTDIR); $(MAKE) -f $(MAKEFILE) install
# ./configure --prefix =/usr/local/freetype
# make && make install

4. Install libpng

# tar xvzf libpng-1.5.2.tar.gz
# cd libpng-1.5.2
# ./configure --prefix=/usr/local/libpng
# make && make install

5. Install jpegsrc

# tar xvzf jpegsrc.v6b.tar.gz
# cd jpegsrc.v6b
# ./configure --prefix=/usr/local/jpeg6 –enable-shared –enable-static
# make && make install

Possible error: The prompt folder does not exist. It should be that the program cannot automatically create the folder. According to the error prompt, just create the file manually with mkdir. This time for example:

# mkdir -p /usr/local/jpeg6/include/
# mkdir -p /usr/local/jpeg6/lib/
# mkdir -p /usr/local/jpeg6/bin/cjpeg
# mkdir -p /usr/local/jpeg6/man/man1/

6. Install gettext (some have it directly, you can install the GD library first, report an error and then return to install it)

# tar xvzf gettext-0.16.1.tar.gz
# cd gettext-0.16.1
# ./configure --prefix=/usr/local/gettext
# make && make install

7. Install the GD library

# tar xvzf gd-2.0.35.tar.gz
# cd gd-2.0.35
# ./configure --prefix=/usr/local/gd --with-jpeg=/usr/ local/jpeg6 --with-png=/usr/local/libpng --with-freetype=/usr/local/freetype
# make
# make install

configure...This step is possible Error: configure.ac:64: error: possibly undefined macro: AM_ICONV, you must install gettext (discussed in step 6)

8. Generate gd.so

# cd ../php-5.2.17/ext/gd/
#/usr/local/php5/bin/phpize
#./configure --with-php-config=/usr/local /php5/bin/php-config --with-jpeg-dir=/usr/local/jpeg6/ --with-png-dir=/usr/local/libpng/ --with-gd=/usr/local/gd / --with-freetype-dir=/usr/local/freetype/
# make && make install

At this time, at the end of make install, there will be the location where the gd library is stored, from that folder Copy gd.so to the extension library directory

9. Modify PHP.ini Add the following content to php.ini

extension=gd.so

10. After the installation is completed, restart the Apache service

# service httpd restart