Fedora22编译Qt3.3.X
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FC22编译QT3笔记
安装g++
dnf install gcc-c++
1,configure
./configure -thread -no-nis -system-libpng -system-libjpeg -system-libmng -system-zlib - nomake examples -- nomake tutorial
2,gmake
2.1 error: ‘ptrdiff_t‘ does not name a type
打开include\qvaluelist.h 加入#include <stddef.h>
2.2 forward declaration of ‘png_info {aka struct png_info_def}‘
这是png15之后的api升级了,参考
https://github.com/alekseysidorov/gentoo-stuff/blob/master/x11-libs/qt/files/qt-3.3.8-libpng15.patch
打开kernel\qpngio.cpp
在首行#include <png.h>后加入
#include <zlib.h>
setup_qt函数中png_get_IHDR函数后面加入
png_colorp info_ptr_palette = NULL;
int info_ptr_num_palette = 0;
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)) {
png_get_PLTE(png_ptr, info_ptr, &info_ptr_palette, &info_ptr_num_palette);
}
png_bytep info_ptr_trans_alpha = NULL;
int info_ptr_num_trans = 0;
png_color_16p info_ptr_trans_color = NULL;
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
png_get_tRNS(png_ptr, info_ptr, &info_ptr_trans_alpha, &info_ptr_num_trans, &info_ptr_trans_color);
}
if ( bit_depth == 1 && info_ptr->channels == 1 ) { 改为
if ( bit_depth == 1 && png_get_channels(png_ptr, info_ptr) == 1 ) {
163行
const int g = info_ptr->trans_values.gray; 改为
const int g = info_ptr_trans_color->gray;
187行
&& info_ptr->num_palette <= 256 ) 改为
&& info_ptr_num_palette <= 256 )
196行
if (!image.create(width, height, bit_depth, info_ptr->num_palette
改为
if (!image.create(width, height, bit_depth, info_ptr_num_palette
201行
while ( i < info_ptr->num_trans ) {
image.setColor(i, qRgba(
info_ptr->palette[i].red,
info_ptr->palette[i].green,
info_ptr->palette[i].blue,
info_ptr->trans[i]
)
);
i++;
}
改为
while ( i < info_ptr_num_trans ) {
image.setColor(i, qRgba(
info_ptr_palette[i].red,
info_ptr_palette[i].green,
info_ptr_palette[i].blue,
info_ptr_trans_alpha[i]
)
);
i++;
}
303行:
if (setjmp(png_ptr->jmpbuf)) { 改为
if (setjmp(png_jmpbuf(png_ptr))) {
488行:
if (setjmp(png_ptr->jmpbuf)) { 改为
if (setjmp(png_jmpbuf(png_ptr))) {
510行:
info_ptr->channels = 一段注释掉
527行: //png_set_sBIT(png_ptr, info_ptr, 8);
info_ptr->sig_bit.red = 8;
info_ptr->sig_bit.green = 8;
info_ptr->sig_bit.blue = 8;
注释掉,添加
png_color_8 sig_bit;
sig_bit.red = 8;
sig_bit.green = 8;
sig_bit.blue = 8;
png_set_sBIT(png_ptr, info_ptr, &sig_bit);
551行:
info_ptr->palette[i].red = qRed(rgb);
info_ptr->palette[i].green = qGreen(rgb);
info_ptr->palette[i].blue = qBlue(rgb);
改为
info_ptr_palette[i].red = qRed(rgb);
info_ptr_palette[i].green = qGreen(rgb);
info_ptr_palette[i].blue = qBlue(rgb);
上面添加:
png_colorp info_ptr_palette = NULL;
int tmp;
png_get_PLTE(png_ptr, info_ptr, &info_ptr_palette, &tmp);
573行:
info_ptr->sig_bit.alpha = 8;
改为
png_color_8p sig_bit;
png_get_sBIT(png_ptr, info_ptr, &sig_bit);
sig_bit->alpha = 8;
png_set_sBIT(png_ptr, info_ptr, sig_bit);
1063行
if (setjmp(png_ptr->jmpbuf)) { 改为
if (setjmp(png_jmpbuf(png_ptr))) {
1090行
if (setjmp(png_ptr->jmpbuf)) { 改为
if (setjmp(png_jmpbuf(png_ptr))) {
1150行:
unused_data = (int)png->buffer_size; // Since libpng doesn‘t tell us 改为
unused_data = png_process_data_pause(png, 0);
2.3 qjpegio.cpp:59:21: fatal error: jpeglib.h: No such file or directory
yum install libjpeg-devel
2.4 qmngio.cpp:58:20: fatal error: libmng.h: No such file or directory
yum install libmng-devel
2.5 undefined reference to `qInitImages_designercore()‘
qInitImages_designercore() 原本因该在
tools/designer/designer/qmake_image_collection.cpp
文件中,打开一看,文件中没有这个函数
该文件不是qt自带的文件,是通过命令生成的:
/qt3/bin/uic -embed designercore images/designer_adjustsize.png -o qmake_image_collection.cpp
运行该命令报错:
libpng error: bad parameters to zlib
uic: cannot load image file images/designer_adjustsize.png
归结原因是qt无法读取png图片.
最终定位原因,是qt自带的zlib和系统的版本不匹配!
configure中加入-system-zlib
顺利编译通过
2.6 qmake: command not found
3,设置环境变量
#export QT env
export QTDIR=/qt3
export PATH=$QTDIR/bin:$PATH
export LD_LIBRARY_PATH=$QTDIR/lib:$LD_LIBRARY_PATH
export DISPLAY=:0.0
#end export QT env
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