In hindsight my emscripten-ifdef (70d416a8f63f) is nonsense.
As fpcrtl_glShaderSource() would not be defined and lead to compiling issues.
So either it's 3 ifdefs (in pas2cRedo, pas2cSystem and misc.c),
in order to toggle between fpcrtl_ and the native function,
or alternatively have no ifdef for it at all.
I'm going with none at all,
which means emscripten will compile with the original (const) function prototype,
being wrapped by the fpcrtl_ function, same as non-emscripten builds.
# - Try to find the OggVorbis libraries
# Once done this will define
#
# OGGVORBIS_FOUND - system has both Ogg and Vorbis
# OGGVORBIS_VERSION - set either to 1 or 2
# OGGVORBIS_INCLUDE_DIR - the OggVorbis include directory
# OGGVORBIS_LIBRARIES - the libraries needed to use OggVorbis
#
# OGG_LIBRARY - the Ogg library
# OGG_INCLUDE_DIR - the Ogg include directory
# VORBIS_LIBRARY - the Vorbis library
# VORBIS_INCLUDE_DIR - the Vorbis include directory
# VORBISFILE_LIBRARY - the VorbisFile library
#
# Copyright (c) 2006, Richard Laerkaeng <richard@goteborg.utfors.se>
# Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
### sommer [SuperTux]
## - Removed unused vorbisenc library
## - reversed order of libraries, so that cmake 2.4.5 for Windows generates an MSYS Makefile that will link correctly
### koda [Hedgewars]
## - split ogg and vorbis lookup
## - special case for framework handling
## - standard variables handling
include (CheckLibraryExists)
include (FindPackageHandleStandardArgs)
find_path(OGG_INCLUDE_DIR ogg.h PATH_SUFFIXES ogg)
find_path(VORBIS_INCLUDE_DIR vorbisfile.h PATH_SUFFIXES vorbis)
find_library(OGG_LIBRARY NAMES Ogg ogg)
find_library(VORBIS_LIBRARY NAMES Vorbis vorbis)
find_library(VORBISFILE_LIBRARY NAMES vorbisfile)
set(_CMAKE_REQUIRED_LIBRARIES_TMP ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${OGGVORBIS_LIBRARIES})
check_library_exists(${VORBIS_LIBRARY} vorbis_bitrate_addblock "" HAVE_LIBVORBISENC2)
set(CMAKE_REQUIRED_LIBRARIES ${_CMAKE_REQUIRED_LIBRARIES_TMP})
if(HAVE_LIBVORBISENC2)
set(OGGVORBIS_VERSION 2)
else(HAVE_LIBVORBISENC2)
set(OGGVORBIS_VERSION 1)
endif(HAVE_LIBVORBISENC2)
if(${OGG_LIBRARY} MATCHES ".framework" AND ${VORBIS_LIBRARY} MATCHES ".framework")
set(VORBISFILE_LIBRARY "") #vorbisfile will appear as NOTFOUND and discarded
set(fphsa_vorbis_list VORBIS_LIBRARY)
else()
set(fphsa_vorbis_list VORBISFILE_LIBRARY VORBIS_LIBRARY)
endif()
find_package_handle_standard_args(OggVorbis DEFAULT_MSG ${fphsa_vorbis_list} OGG_LIBRARY
OGG_INCLUDE_DIR VORBIS_INCLUDE_DIR)
unset(fphsa_vorbis_list)
set(OGGVORBIS_LIBRARIES ${VORBISFILE_LIBRARY} ${VORBIS_LIBRARY} ${OGG_LIBRARY})
set(OGGVORBIS_INCLUDE_DIR ${VORBIS_INCLUDE_DIR} ${OGG_INCLUDE_DIR})
mark_as_advanced(OGGVORBIS_VERSION OGGVORBIS_INCLUDE_DIR OGGVORBIS_LIBRARIES
OGG_LIBRARY OGG_INCLUDE_DIR VORBIS_LIBRARY VORBIS_INCLUDE_DIR VORBISFILE_LIBRARY)