blob: c5f40b32391074df53db37654791436a5012123c [file] [log] [blame]
#----------------------------------------------------------------------
# Emit 'version.go'. This file contains a series of Go constants that
# capture the target configuration (arch, OS, etc), emitted directly
# to a file (as opposed to generation via script). Based on the
# libgo Makefile recipe.
#
# Unnamed parameters:
#
# * GOOS setting (target OS)
# * GOARCH setting (target architecture)
# * output file
# * cmake binary directory for libfo
# * root of src containing libgo script files
#
function(mkversion goos goarch outfile bindir srcroot scriptroot)
file(REMOVE ${outfile})
file(WRITE ${outfile} "package sys\n")
# FIXME: typical LLVM usage allows for performing a build without
# CMAKE_INSTALL_PREFIX set, then doing an install from the build
# using a newly chosen CMAKE_INSTALL_PREFIX value. This mode is
# not currently supported -- the install prefix has to be set properly
# as part of the original build.
# Tools subdir within the install.
file(APPEND ${outfile} "func init() { DefaultGoroot = \"${CMAKE_INSTALL_PREFIX}\" }\n")
# Compiler version
file(STRINGS "${srcroot}/../VERSION" rawver)
string(STRIP ${rawver} ver)
file(APPEND ${outfile} "const TheVersion = ")
emitversionstring(${outfile} ${srcroot})
file(APPEND ${outfile} "\n")
# FIXME:
# GccgoToolDir is set to the gccgo installation directory that contains
# (among other things) "go1", "cgo", "cc1", and other auxiliary
# executables. Where things like "cgo" will live hasn't been ironed
# out yet, so just pick a spot in the bin directory for now. See also
# 'DefaultGoRoot' above.
file(APPEND ${outfile} "const GccgoToolDir = \"${CMAKE_INSTALL_PREFIX}/tools\"\n")
# FIXME: add a real switch base on configuration params here.
if( NOT ${goarch} STREQUAL "amd64")
message(FATAL_ERROR "unsupported arch ${goarch}: currently only amd64 support")
else()
set(archfamily "AMD64")
set(bigendian "false")
set(cachelinesize "64")
set(physpagesize "4096")
set(pcquantum "1")
set(int64align "8")
set(hugepagesize "1 << 21")
set(minframesize 0)
endif()
file(APPEND ${outfile} "const Goexperiment = ``\n")
file(APPEND ${outfile} "const GOARCH = \"${goarch}\"\n")
file(APPEND ${outfile} "const GOOS = \"${goos}\"\n")
file(APPEND ${outfile} "\n")
file(APPEND ${outfile} "type ArchFamilyType int\n\n")
file(APPEND ${outfile} "const (\n")
file(APPEND ${outfile} "\tUNKNOWN ArchFamilyType = iota\n")
foreach (af ${allgoarchfamily})
file(APPEND ${outfile} "\t${af}\n")
endforeach()
file(APPEND ${outfile} ")\n\n")
foreach (arch ${allgoarch})
set(val "0")
if( ${arch} STREQUAL ${goarch})
set(val "1")
endif()
upperfirst(${arch} "uparch")
file(APPEND ${outfile} "const Goarch${uparch} = ${val}\n")
endforeach()
file(APPEND ${outfile} "\n")
set(constants "ArchFamily:family" "BigEndian:bigendian" "CacheLineSize:cachelinesize" "PhysPageSize:defaultphyspagesize" "PCQuantum:pcquantum" "Int64Align:int64align" "HugePageSize:hugepagesize" "MinFrameSize:minframesize")
file(APPEND ${outfile} "const (\n")
foreach(item ${constants})
# Split item into Go constant name and
string(REGEX REPLACE ":" " " sitem ${item})
separate_arguments(sitem)
list(GET sitem 0 constname)
list(GET sitem 1 scriptarg)
# Invoke goarch.sh
execute_process(COMMAND ${shell} "${scriptroot}/goarch.sh"
${goarch} ${scriptarg}
OUTPUT_VARIABLE result
ERROR_VARIABLE errmsg
RESULT_VARIABLE exitstatus)
if(${exitstatus} MATCHES 0)
file(APPEND ${outfile} "\t${constname} = ${result}")
else()
message(FATAL_ERROR "goarch.sh invocation failed: ${errmsg}")
endif()
endforeach()
file(APPEND ${outfile} ")\n\n")
foreach (os ${allgoos})
set(val "0")
if( ${os} STREQUAL ${goos})
set(val "1")
endif()
upperfirst(${os} "upos")
file(APPEND ${outfile} "const Goos${upos} = ${val}\n")
endforeach()
file(APPEND ${outfile} "\n")
file(APPEND ${outfile} "type Uintreg uintptr\n")
endfunction()
macro(upperfirst name result)
string(SUBSTRING ${name} 0 1 c1)
string(SUBSTRING ${name} 1 -1 crem)
string(TOUPPER ${c1} upc1)
set(${result} "${upc1}${crem}")
endmacro()
#----------------------------------------------------------------------
# Emit compiler version string to specified output file. This is extracted
# out into a separate function since it is needed in a couple of different
# places.
#
# Unnamed parameters:
#
# * output file to target
# * root of libgo source
function(emitversionstring outfile srcroot)
file(STRINGS "${srcroot}/../VERSION" rawver)
string(STRIP ${rawver} ver)
file(APPEND ${outfile} "\"${ver} gollvm LLVM ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX}\"")
endfunction()
#----------------------------------------------------------------------
# Emit 'gccgosizes.go', which includes size and alignment constants
# by architecture.
#
# Unnamed parameters:
#
# * GOARCH setting for target
# * output file to target
# * directory containing libgo scripts
#
function(mkgccgosizes goarch outfile scriptroot)
file(REMOVE ${outfile})
file(WRITE ${outfile} "package types\n\n")
file(APPEND ${outfile} "var gccgoArchSizes = map[string]*StdSizes{\n")
foreach(arch ${allgoarch})
execute_process(COMMAND ${shell} "${scriptroot}/goarch.sh"
${arch} "ptrsize"
OUTPUT_VARIABLE presult
ERROR_VARIABLE errmsg
RESULT_VARIABLE exitstatus)
if(NOT ${exitstatus} MATCHES 0)
message(FATAL_ERROR "goarch.sh invocation failed: ${errmsg}")
endif()
execute_process(COMMAND ${shell} "${scriptroot}/goarch.sh"
${arch} "maxalign"
OUTPUT_VARIABLE aresult
ERROR_VARIABLE errmsg
RESULT_VARIABLE exitstatus)
if(NOT ${exitstatus} MATCHES 0)
message(FATAL_ERROR "goarch.sh invocation failed: ${errmsg}")
endif()
string(STRIP ${presult} presult)
string(STRIP ${aresult} aresult)
file(APPEND ${outfile} "\"${arch}\": {${presult}, ${aresult}},\n")
endforeach()
file(APPEND ${outfile} "}\n")
endfunction()
#----------------------------------------------------------------------
# Emit 'objabi.go', containing default settings for various GO* vars.
#
# Unnamed parameters:
#
# * output file to target
# * libgo cmake binary directory
# * libgo source code root directory
#
function(mkobjabi outfile binroot srcroot)
file(REMOVE ${outfile})
file(WRITE ${outfile} "package objabi\n\n")
file(APPEND ${outfile} "import \"runtime\"\n")
file(APPEND ${outfile} "func init() { defaultGOROOT = \"${GOLLVM_INSTALL_DIR}\" }\n")
file(APPEND ${outfile} "const defaultGO386 = `sse2`\n")
file(APPEND ${outfile} "const defaultGOARM = `5`\n")
file(APPEND ${outfile} "const defaultGOMIPS = `hardfloat`\n")
file(APPEND ${outfile} "const defaultGOOS = runtime.GOOS\n")
file(APPEND ${outfile} "const defaultGOARCH = runtime.GOARCH\n")
file(APPEND ${outfile} "const defaultGO_EXTLINK_ENABLED = ``\n")
file(APPEND ${outfile} "const version = ")
emitversionstring(${outfile} ${srcroot})
file(APPEND ${outfile} "\n")
file(APPEND ${outfile} "const stackGuardMultiplier = 1\n")
file(APPEND ${outfile} "const goexperiment = ``\n")
endfunction()
#----------------------------------------------------------------------
# Emit 'zstdpkglist.go', containing a map with all of the std Go packages.
#
# Unnamed parameters:
#
# * package to use for generated Go code
# * output file to target
# * list of go std library packages (does not include libgotool packages)
#
function(mkzstdpkglist package outfile libpackages)
file(REMOVE ${outfile})
file(WRITE ${outfile} "package ${package}\n\n")
file(APPEND ${outfile} "var stdpkg = map[string]bool{")
foreach(pack ${libpackages})
file(APPEND ${outfile} "\"${pack}\": true,\n")
endforeach()
file(APPEND ${outfile} "\"unsafe\": true,\n")
file(APPEND ${outfile} "\"runtime/cgo\": true,\n")
file(APPEND ${outfile} "}\n")
endfunction()
#----------------------------------------------------------------------
# Emit 'zdefaultcc.go', containing info on where to find C/C++ compilers.
#
# Unnamed parameters:
#
# * package to use for generated Go code
# * output file to target
# * C compiler path
# * C++ compiler path
#
# Named parameters:
#
# EXPORT Generated public functions (ex: DefaultCC not defaultCC).
#
function(mkzdefaultcc package outfile ccpath cxxpath)
CMAKE_PARSE_ARGUMENTS(ARG "EXPORT" "" "" ${ARGN})
# Construct default driver path
set(driverpath "${GOLLVM_INSTALL_DIR}/bin/llvm-goc")
file(REMOVE ${outfile})
file(WRITE ${outfile} "package ${package}\n\n")
set(f1 "defaultGCCGO")
set(f2 "defaultCC")
set(f3 "defaultCXX")
set(f4 "defaultPkgConfig")
set(v1 "oSArchSupportsCgo")
if( ${ARG_EXPORT} )
upperfirst(${f1} "f1")
upperfirst(${f2} "f2")
upperfirst(${f3} "f3")
upperfirst(${f4} "f4")
upperfirst(${v1} "v1")
endif()
file(APPEND ${outfile} "func ${f1}(goos, goarch string) string { return \"${driverpath}\" }\n")
file(APPEND ${outfile} "func ${f2}(goos, goarch string) string { return \"${ccpath}\" }\n")
file(APPEND ${outfile} "func ${f3}(goos, goarch string) string { return \"${cxxpath}\" }\n")
file(APPEND ${outfile} "const ${f4} = \"pkg-config\"\n")
file(APPEND ${outfile} "var ${v1} = map[string]bool{}\n")
endfunction()
#----------------------------------------------------------------------
# Emit 'epoll.go', containing info on the epoll syscall. Reads
# variables SIZEOF_STRUCT_EPOLL_EVENT and STRUCT_EPOLL_EVENT_FD_OFFSET
# previously set by config process.
#
# Unnamed parameters:
#
# * output file to target
#
function(mkepoll outfile)
file(REMOVE ${outfile})
file(WRITE ${outfile} "package syscall\n\n")
set(s ${SIZEOF_STRUCT_EPOLL_EVENT})
set(o ${STRUCT_EPOLL_EVENT_FD_OFFSET})
file(APPEND ${outfile} "type EpollEvent struct {")
file(APPEND ${outfile} " Events uint32\n")
if(${s} EQUAL 0 AND ${o} EQUAL 0)
message(SEND_ERROR "*** struct epoll_event data.fd offset unknown")
elseif(${s} EQUAL 8 AND ${o} EQUAL 4)
file(APPEND ${outfile} " Fd int32\n")
elseif(${s} EQUAL 12 AND ${o} EQUAL 4)
file(APPEND ${outfile} " Fd int32\n Pad [4]byte\n")
elseif(${s} EQUAL 12 AND ${o} EQUAL 8)
file(APPEND ${outfile} " Pad [4]byte\n Fd int32\n")
elseif(${s} EQUAL 16 AND ${o} EQUAL 8)
file(APPEND ${outfile} " Pad [4]byte\n Fd int32\n Pad [4]byte\n ")
else()
message(SEND_ERROR "*** struct epoll_event data.fd offset unknown")
endif()
file(APPEND ${outfile} "}\n")
endfunction()
#----------------------------------------------------------------------
# Emit 'syscall_arch.go', containing arch and os constants.
#
# Unnamed parameters:
#
# * output file to target
# * GOOS setting (target OS)
# * GOARCH setting (target architecture)
#
function(mksyscallarch outfile goos goarch)
file(REMOVE ${outfile})
file(WRITE ${outfile} "package syscall\n\n")
file(APPEND ${outfile} "const ARCH = \"${goarch}\"\n")
file(APPEND ${outfile} "const OS = \"${goos}\"\n")
endfunction()
# This helper function provides a general mechanism for running a
# shell script to emit a Go code to a temp file, then adds a cmake
# target that copies the temp to a specific *.go file if the temp
# is different.
#
# Example usage:
#
# generate_go_from_script(outfile script goos goarch workdir DEP <deps>)
#
# Unnamed parameters:
#
# * generated Go source file (this should be a full path)
# * script to run
# * GOOS setting (target OS)
# * GOARCH setting (target architecture)
# * working bin directory
#
# Named parameters:
#
# CAPTURE Capture stdout from script into output file.
# SCRIPTARGS Additional args to pass to script.
# DEP Things that the generated file should depend on.
#
function(generate_go_from_script outpath script goos goarch workdir)
CMAKE_PARSE_ARGUMENTS(ARG "CAPTURE" "" "DEP;SCRIPTARGS" ${ARGN})
get_filename_component(outfile "${outpath}" NAME)
get_filename_component(outdir "${outpath}" DIRECTORY)
set(tmpfile "${outdir}/tmp-${outfile}")
set(shell $ENV{SHELL})
# Create a rule that runs the script into a temporary file.
if( NOT ARG_CAPTURE )
add_custom_command(
# For this variant, the assumption is that the script writes it
# output to a specified file.
OUTPUT ${tmpfile}
COMMAND "GOARCH=${goarch}" "GOOS=${goos}"
"${shell}" ${script} ${ARG_SCRIPTARGS}
COMMENT "Creating ${tmpfile}"
DEPENDS ${script} ${ARG_DEP}
WORKING_DIRECTORY ${workdir}
VERBATIM)
else()
# For this variant, the script is emitting output to stdout,
# which we need to capture and redirect to a file.
set(capturesh "${CMAKE_CURRENT_SOURCE_DIR}/capturescript.sh")
add_custom_command(
OUTPUT ${tmpfile}
COMMAND "GOARCH=${goarch}" "GOOS=${goos}"
"${shell}" ${capturesh} ${script} ${tmpfile} ${ARG_SCRIPTARGS}
COMMENT "Creating ${tmpfile}"
DEPENDS ${script} ${ARG_DEP}
WORKING_DIRECTORY ${workdir}
VERBATIM)
endif()
# Create a rule that copies tmp file to output file if different.
copy_if_different(${tmpfile} ${outpath})
endfunction()
# This function manages the cmake rules for the auto-generated
# 'gen-sysinfo.go' file, which contains type information derived from
# compiling a C program that includes various system headers.
#
# Unnamed parameters:
#
# * name of tmpfile into which to generate provisional Go code
# * name of generated Go source file for final Go code
# * name of macro temp file to generate
# * name of temp object file to write
# * path to godumpspec tool
# * path to sysinfo.c
#
# Names params:
#
# * DEPS -- things gen-sysinfo.go is dependent on (ex: config.h)
# * CFLAGS -- additional compile options (ex: -I ...)
#
function(mkgensysinfo tmpfile outfile macrofile objfile godumpspec sysinfoc)
CMAKE_PARSE_ARGUMENTS(ARG "" "" "DEPS;CFLAGS" ${ARGN})
set(ccomp ${CMAKE_C_COMPILER})
set(cflags ${ARG_CFLAGS})
if(NOT "${CMAKE_SYSROOT}" STREQUAL "")
set(cflags ${cflags} "--sysroot=${CMAKE_SYSROOT}")
endif()
# Run the host C compiler to generate the object. NB: clang will
# accept -fno-eliminate-unused-debug-types but does not actually
# implement this functionality.
add_custom_command(
OUTPUT ${objfile}
COMMAND ${ccomp} "-g3" "-c" "-fno-eliminate-unused-debug-types"
${sysinfoc} -o ${objfile} ${cflags}
DEPENDS ${sysinfoc} ${ARG_DEPS}
COMMENT "Building sysinfo.o "
VERBATIM)
# Another compile to build the macro temp file.
add_custom_command(
OUTPUT ${macrofile}
COMMAND ${ccomp} "-E" "-dM"
${sysinfoc} -o ${macrofile} ${cflags}
DEPENDS ${sysinfoc} ${ARG_DEPS}
COMMENT "Building sysinfo.c macro temp file"
VERBATIM)
# Next step is to run the llvm-godumpspec utility, which consumes
# the two files produced above and generates the Go file in question.
add_custom_command(
OUTPUT ${tmpfile}
COMMAND ${godumpspec}
"--macrotmp=${macrofile}" "--object=${objfile}" "--output=${tmpfile}"
DEPENDS ${objfile} ${macrofile} ${ARG_DEPS}
COMMENT "Generating ${outfile}"
VERBATIM)
# Create a rule that copies tmpfile to output file if different.
copy_if_different(${tmpfile} ${outfile})
endfunction()