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Update CMake instructions for cross compilation

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Add CMAKE_RC_COMPILER variable, switch to 64-bit toolchain, add
a note to replace the toolchain location as required, fix typos.
This commit is contained in:
Albrecht Schlosser 2020-01-18 14:29:01 +01:00
parent ef48a0ddb9
commit 088eedb0ad
1 changed files with 16 additions and 11 deletions
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27
README.CMake.txt
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@ -204,7 +204,7 @@ the following.
sudo make install (optional)
IMPORTANT: The trailing ".." on the cmake command must be specified
(it is NOT an elipsis). ^^^^^^^^^^^^^^^^^
(it is NOT an ellipsis). ^^^^^^^^^^^^^^^^^
This will build and install a default configuration FLTK.
@ -252,7 +252,7 @@ in the GUI (cmake-gui).
cmake -G "Visual Studio 7" -D CMAKE_BUILD_TYPE=Release ..
IMPORTANT: The trailing ".." on the cmake command must be specified
(it is NOT an elipsis). ^^^^^^^^^^^^^^^^^
(it is NOT an ellipsis). ^^^^^^^^^^^^^^^^^
This will create the file FLTK.sln in the current 'build' directory.
@ -377,25 +377,28 @@ of the cmake related files are updated, Xcode will rerun cmake for you.
Once you have a crosscompiler going, to use CMake to build FLTK you need
two more things. You need a toolchain file which tells CMake where your
build tools are. The CMake website is a good source of information on
this file. Here's one for MinGW under Linux.
this file. Here's one for MinGW (64-bit) under Linux.
----
# CMake Toolchain File for MinGW Cross Compilation
# CMake Toolchain File for MinGW-w64 (64-bit) Cross Compilation
# the name of the target operating system
set(CMAKE_SYSTEM_NAME Windows)
# which tools to use
set(CMAKE_C_COMPILER /usr/bin/i486-mingw32-gcc)
set(CMAKE_CXX_COMPILER /usr/bin/i486-mingw32-g++)
set(CMAKE_C_COMPILER /usr/bin/x86_64-w64-mingw32-gcc)
set(CMAKE_CXX_COMPILER /usr/bin/x86_64-w64-mingw32-g++)
set(CMAKE_RC_COMPILER /usr/bin/x86_64-w64-mingw32-windres)
# here is where the target environment located
set(CMAKE_FIND_ROOT_PATH /usr/i486-mingw32)
set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
# adjust the default behavior of the FIND_XXX() commands:
# adjust the default behaviour of the FIND_XXX() commands:
# search programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# search headers and libraries in the target environment,
# search headers and libraries in the target environment
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
@ -421,11 +424,13 @@ So, again from the FLTK tree root.
sudo make install
IMPORTANT: The trailing ".." on the cmake command must be specified
(it is NOT an elipsis). ^^^^^^^^^^^^^^^^^
(it is NOT an ellipsis). ^^^^^^^^^^^^^^^^^
This will create a default configuration FLTK suitable for mingw/msys and
install it in the /usr/i486-mingw32/usr tree.
install it in the /usr/x86_64-w64-mingw32/usr tree.
Note: replace 'x86_64-w64-mingw32' with your cross toolchain location as
required.
3. Using CMake with FLTK