cmake_minimum_required(VERSION 3.4)

project(2ine)

# Note that this project doesn't work on Mac OS X because I can't mmap()

# address 0x10000, which is the usual base address for OS/2 binaries.

# It appears the address is already accessible when main() begins, but no

# objects seem to be loaded there. I don't know what it is...maybe some

# thing allocated by the C runtime at startup? Have to solve that somehow or

# give up on Mac support.

#

# Eventually, even on Linux, it might make sense to override malloc and friends

# at the dynamic loader level, so we control all allocations even if they

# happen in glibc. Once we have that, make sure they all sit in the upper

# 2 gigabytes (reserved for system use on OS/2, so this works out), probably

# with them mmap()'d there via a local copy of dlmalloc or something.

#

# Note that 32-bit OS/2 programs only got 512 megabytes of the address space

# (enormous in the days of machines with a couple megabytes of physical RAM!)

# to accomodate thunking to and from 16 bit code. We don't bother with this

# at the moment, though, but maybe we must at some point. I hope not.

#

# Also, it might be nice if we can run as a 64-bit process and thunk around in

# 32-bits as necessary, but I don't know the technical barriers to this yet.

# If we can pull that off, it would allow an OS/2 app to have the full 4

# gigabytes of memory, and we'll just put 2ine's data outside of that range,

# and run the native bits with more registers, etc. Maybe even keep the

# native functions out of low memory and only eat a few bytes of it with

# trampolines. I'm probably getting ahead of myself, though, as it's not like

# any OS/2 apps were _that_ memory hungry, and honestly? Port your software.

if(NOT CMAKE_BUILD_TYPE)

set(DEBUG_BUILD ON)

endif()

if(CMAKE_BUILD_TYPE STREQUAL "Debug")

set(DEBUG_BUILD ON)

endif()

if(DEBUG_BUILD)

add_definitions(-DDEBUG -O0)

else()

add_definitions(-D_RELEASE)

add_definitions(-DNDEBUG)

add_definitions(-DRELEASE)

endif()

add_definitions(-std=c99 -Wall -ggdb3)

foreach(_I doscalls;msg;nls;quecalls;viocalls;kbdcalls;sesmgr)

add_library(${_I} SHARED "native/${_I}.c")

set_target_properties(${_I} PROPERTIES COMPILE_FLAGS "-m32")

set_target_properties(${_I} PROPERTIES LINK_FLAGS "-m32 -ggdb3")

endforeach()

target_link_libraries(doscalls "pthread")

add_executable(lx_dump lx_dump.c)

add_executable(lx_loader lx_loader.c)

target_link_libraries(lx_loader "dl")

set_target_properties(lx_loader PROPERTIES COMPILE_FLAGS "-m32")

set_target_properties(lx_loader PROPERTIES LINK_FLAGS "-m32 -ggdb3")

# end of CMakeLists.txt ...