Remove Qt SVG and Qt OpenGL as hard dependencies
Qt SVG is not used in the frontend (no SVGs are rendered).
Neither is Qt OpenGL used. Qt OpenGL is discouraged anyway.
system;
{This file contains functions that are external}
type
uinteger = uinteger;
Integer = integer;
LongInt = integer;
LongWord = uinteger;
Cardinal = uinteger;
PtrInt = integer;
SizeInt = PtrInt;
Word = uinteger;
Byte = integer;
SmallInt = integer;
ShortInt = integer;
Int64 = integer;
QWord = uinteger;
GLint = integer;
GLsizei = integer;
GLuint = integer;
GLenum = integer;
int = integer;
size_t = integer;
pointer = pointer;
float = float;
single = float;
double = float;
real = float;
extended = float;
GLfloat = float;
boolean = boolean;
LongBool = boolean;
string = string;
shortstring = string;
ansistring = string;
widechar = string;
char = char;
PChar = ^char;
PPChar = ^Pchar;
PWideChar = ^WideChar;
PByte = ^Byte;
PWord = ^Word;
PLongInt = ^LongInt;
PLongWord = ^LongWord;
PInteger = ^Integer;
Handle = integer;
png_structp = pointer;
png_size_t = integer;
var
false, true: boolean;
ord, Succ, Pred : function : integer;
inc, dec, Low, High, Lo, Hi : function : integer;
IOResult : integer;
exit, break, halt, continue : procedure;
TextFile, File : Handle;
FileMode : integer;
exitcode : integer;
stdout, stderr : Handle;
sqrt, cos, sin: function : float;
pi : float;
sizeof : function : integer;
glGetString : function : pchar;
glBegin, glBindTexture, glBlendFunc, glClear, glClearColor,
glColor4ub, glColorMask, glColorPointer, glDeleteTextures,
glDisable, glDisableClientState, glDrawArrays, glEnable,
glEnableClientState, glEnd, glGenTextures, glGetIntegerv,
glHint, glLineWidth, glLoadIdentity, glMatrixMode, glPopMatrix,
glPushMatrix, glReadPixels, glRotatef, glScalef, glTexCoord2f,
glTexCoordPointer, glTexImage2D, glTexParameterf,
glTexParameteri, glTranslatef, glVertex2d, glVertexPointer,
glViewport, glext_LoadExtension, glDeleteRenderbuffersEXT,
glDeleteFramebuffersEXT, glGenFramebuffersEXT,
glGenRenderbuffersEXT, glBindFramebufferEXT,
glBindRenderbufferEXT, glRenderbufferStorageEXT,
glFramebufferRenderbufferEXT, glFramebufferTexture2DEXT,
glUniformMatrix4fv, glVertexAttribPointer, glCreateShader,
glShaderSource, glCompileShader, glGetShaderiv, glGetShaderInfoLog,
glCreateProgram, glAttachShader, glBindAttribLocation, glLinkProgram,
glDeleteShader, glGetProgramiv, glGetProgramInfoLog, glUseProgram,
glUniform1i, glGetUniformLocation, glEnableVertexAttribArray,
glGetError, glDeleteProgram, glDeleteBuffers,
glGenBuffers, glBufferData, glBindBuffer, glewInit,
glUniform4f, glDisableVertexAttribArray, glTexEnvi,
glLoadMatrixf, glMultMatrixf, glGetFloatv: procedure;
GL_BGRA, GL_BLEND, GL_CLAMP_TO_EDGE, GL_COLOR_ARRAY,
GL_COLOR_BUFFER_BIT, GL_DEPTH_BUFFER_BIT, GL_DEPTH_COMPONENT,
GL_DITHER, GL_EXTENSIONS, GL_FALSE, GL_FASTEST, GL_LINEAR,
GL_LINE_LOOP, GL_LINES, GL_LINE_SMOOTH, GL_LINE_STRIP,
GL_MAX_TEXTURE_SIZE, GL_MODELVIEW, GL_ONE_MINUS_SRC_ALPHA,
GL_PERSPECTIVE_CORRECTION_HINT, GL_PROJECTION, GL_QUADS,
GL_RENDERER, GL_RGB, GL_RGB8, GL_RGBA, GL_RGBA8, GL_SRC_ALPHA, GL_TEXTURE_2D,
GL_TEXTURE_COORD_ARRAY, GL_TEXTURE_MAG_FILTER,
GL_TEXTURE_MIN_FILTER, GL_TEXTURE_PRIORITY, GL_TEXTURE_WRAP_S,
GL_TEXTURE_WRAP_T, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_TRUE, GL_VENDOR,
GL_VERSION, GL_VERTEX_ARRAY, GLenum, GL_FRAMEBUFFER_EXT,
GL_RENDERBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_COLOR_ATTACHMENT0_EXT, GL_FLOAT, GL_UNSIGNED_BYTE, GL_COMPILE_STATUS,
GL_INFO_LOG_LENGTH, GL_LINK_STATUS, GL_VERTEX_SHADER, GL_FRAGMENT_SHADER,
GL_NO_ERROR, GL_ARRAY_BUFFER, GL_STATIC_DRAW, GLEW_OK,
GL_AUX_BUFFERS, GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE, GL_ADD,
GL_MODELVIEW_MATRIX: integer;
TThreadId : function : integer;
_strconcat, _strappend, _strprepend, _chrconcat : function : string;
_strcompare, _strncompare, _strcomparec, _strncompareA : function : boolean;
_strconcatA, _strappendA : function : ansistring;
png_structp, png_set_write_fn, png_get_io_ptr,
png_get_libpng_ver, png_create_write_struct,
png_create_info_struct, png_destroy_write_struct,
png_write_row, png_set_ihdr, png_write_info,
png_write_end : procedure;
clear_filelist_hook, add_file_hook, idb_loader_hook, mainloop_hook, drawworld_hook : procedure;
SDL_InitPatch : procedure;
PHYSFS_init, PHYSFS_deinit, PHYSFS_mount, PHYSFS_readBytes, PHYSFS_writeBytes, PHYSFS_read : function : LongInt;
PHYSFSRWOPS_openRead, PHYSFSRWOPS_openWrite, PHYSFS_openRead, PHYSFS_openWrite : function : pointer;
PHYSFS_eof, PHYSFS_close, PHYSFS_exists, PHYSFS_mkdir, PHYSFS_flush, PHYSFS_setWriteDir, PHYSFS_setBuffer : function : boolean;
PHYSFS_getLastError : function : PChar;
PHYSFS_enumerateFiles : function : PPChar;
PHYSFS_freeList : procedure;
hedgewarsMountPackages, physfsReaderSetBuffer, hedgewarsMountPackage : procedure;
physfsReader : function : pointer;