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authorAllen Byrne <byrn@hdfgroup.org>2019-08-29 15:36:12 (GMT)
committerAllen Byrne <byrn@hdfgroup.org>2019-08-29 15:36:12 (GMT)
commitfa540a3af8a5ad3d201223aa0baf26819437e108 (patch)
tree1b2de3be271420fbc35b0b2a029434b702f3d126 /config
parent37532a36883806dcebae2c9870424b99dc2eaf5c (diff)
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Add 32-bit cross-compile toolchain
Diffstat (limited to 'config')
-rw-r--r--config/toolchain/build32.cmake37
1 files changed, 37 insertions, 0 deletions
diff --git a/config/toolchain/build32.cmake b/config/toolchain/build32.cmake
new file mode 100644
index 0000000..99b3013
--- /dev/null
+++ b/config/toolchain/build32.cmake
@@ -0,0 +1,37 @@
+if (WIN32)
+ set (CMAKE_SYSTEM_NAME Windows)
+ set (CMAKE_GENERATOR_PLATFORM "x86")
+else ()
+ set (CMAKE_SYSTEM_NAME Linux)
+
+ set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32 -msse2" CACHE STRING "c++ flags")
+ set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32 -msse2" CACHE STRING "c flags")
+
+ set (LIB32 /usr/lib) # Fedora
+
+ if (EXISTS /usr/lib32)
+ set (LIB32 /usr/lib32) # Arch, Solus
+ endif ()
+
+ set (CMAKE_SYSTEM_LIBRARY_PATH ${LIB32} CACHE STRING "system library search path" FORCE)
+ set (CMAKE_LIBRARY_PATH ${LIB32} CACHE STRING "library search path" FORCE)
+
+ # this is probably unlikely to be needed, but just in case
+ set (CMAKE_EXE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "executable linker flags" FORCE)
+ set (CMAKE_SHARED_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "shared library linker flags" FORCE)
+ set (CMAKE_MODULE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "module linker flags" FORCE)
+
+ # on Fedora and Arch and similar, point pkgconfig at 32 bit .pc files. We have
+ # to include the regular system .pc files as well (at the end), because some
+ # are not always present in the 32 bit directory
+ if (EXISTS ${LIB32}/pkgconfig)
+ set (ENV{PKG_CONFIG_LIBDIR} ${LIB32}/pkgconfig:/usr/share/pkgconfig:/usr/lib/pkgconfig:/usr/lib64/pkgconfig)
+ endif ()
+# where is the target environment
+ set (CMAKE_FIND_ROOT_PATH ${LIB32})
+# search for programs in the build host directories
+ set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+# for libraries and headers in the target directories
+ set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+ set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif () \ No newline at end of file