diff options
Diffstat (limited to 'autosetup/cc.tcl')
| -rw-r--r-- | autosetup/cc.tcl | 126 |
1 files changed, 64 insertions, 62 deletions
diff --git a/autosetup/cc.tcl b/autosetup/cc.tcl index f45cc2e..05c1b1c 100644 --- a/autosetup/cc.tcl +++ b/autosetup/cc.tcl @@ -5,7 +5,7 @@ # # The 'cc' module supports checking various 'features' of the C or C++ # compiler/linker environment. Common commands are 'cc-check-includes', -# 'cc-check-types', 'cc-check-functions', 'cc-with', 'make-config-header' and 'make-template'. +# 'cc-check-types', 'cc-check-functions', 'cc-with' and 'make-config-header' # # The following environment variables are used if set: # @@ -677,80 +677,82 @@ proc calc-define-output-type {name spec} { return "" } -# Initialise some values from the environment or commandline or default settings -foreach i {LDFLAGS LIBS CPPFLAGS LINKFLAGS CFLAGS} { - lassign $i var default - define $var [get-env $var $default] -} +proc cc-init {} { + global autosetup -if {[env-is-set CC]} { - # Set by the user, so don't try anything else - set try [list [get-env CC ""]] -} else { - # Try some reasonable options - set try [list [get-define cross]cc [get-define cross]gcc] -} -define CC [find-an-executable {*}$try] -if {[get-define CC] eq ""} { - user-error "Could not find a C compiler. Tried: [join $try ", "]" -} + # Initialise some values from the environment or commandline or default settings + foreach i {LDFLAGS LIBS CPPFLAGS LINKFLAGS CFLAGS} { + lassign $i var default + define $var [get-env $var $default] + } -define CPP [get-env CPP "[get-define CC] -E"] + if {[env-is-set CC]} { + # Set by the user, so don't try anything else + set try [list [get-env CC ""]] + } else { + # Try some reasonable options + set try [list [get-define cross]cc [get-define cross]gcc] + } + define CC [find-an-executable {*}$try] + if {[get-define CC] eq ""} { + user-error "Could not find a C compiler. Tried: [join $try ", "]" + } -# XXX: Could avoid looking for a C++ compiler until requested -# If CXX isn't found, it is set to the empty string. -if {[env-is-set CXX]} { - define CXX [find-an-executable -required [get-env CXX ""]] -} else { - define CXX [find-an-executable [get-define cross]c++ [get-define cross]g++] -} + define CPP [get-env CPP "[get-define CC] -E"] -# CXXFLAGS default to CFLAGS if not specified -define CXXFLAGS [get-env CXXFLAGS [get-define CFLAGS]] + # XXX: Could avoid looking for a C++ compiler until requested + # If CXX isn't found, it is set to the empty string. + if {[env-is-set CXX]} { + define CXX [find-an-executable -required [get-env CXX ""]] + } else { + define CXX [find-an-executable [get-define cross]c++ [get-define cross]g++] + } -# May need a CC_FOR_BUILD, so look for one -define CC_FOR_BUILD [find-an-executable [get-env CC_FOR_BUILD ""] cc gcc false] + # CXXFLAGS default to CFLAGS if not specified + define CXXFLAGS [get-env CXXFLAGS [get-define CFLAGS]] -if {[get-define CC] eq ""} { - user-error "Could not find a C compiler. Tried: [join $try ", "]" -} + # May need a CC_FOR_BUILD, so look for one + define CC_FOR_BUILD [find-an-executable [get-env CC_FOR_BUILD ""] cc gcc false] -# These start empty and never come from the user or environment -define AS_CFLAGS "" -define AS_CPPFLAGS "" -define AS_CXXFLAGS "" + # These start empty and never come from the user or environment + define AS_CFLAGS "" + define AS_CPPFLAGS "" + define AS_CXXFLAGS "" -define CCACHE [find-an-executable [get-env CCACHE ccache]] + define CCACHE [find-an-executable [get-env CCACHE ccache]] -# If any of these are set in the environment, propagate them to the AUTOREMAKE commandline -foreach i {CC CXX CCACHE CPP CFLAGS CXXFLAGS CXXFLAGS LDFLAGS LIBS CROSS CPPFLAGS LINKFLAGS CC_FOR_BUILD LD} { - if {[env-is-set $i]} { - # Note: If the variable is set on the command line, get-env will return that value - # so the command line will continue to override the environment - define-append-argv AUTOREMAKE $i=[get-env $i ""] + # If any of these are set in the environment, propagate them to the AUTOREMAKE commandline + foreach i {CC CXX CCACHE CPP CFLAGS CXXFLAGS CXXFLAGS LDFLAGS LIBS CROSS CPPFLAGS LINKFLAGS CC_FOR_BUILD LD} { + if {[env-is-set $i]} { + # Note: If the variable is set on the command line, get-env will return that value + # so the command line will continue to override the environment + define-append-argv AUTOREMAKE $i=[get-env $i ""] + } } -} -# Initial cctest settings -cc-store-settings {-cflags {} -includes {} -declare {} -link 0 -lang c -libs {} -code {} -nooutput 0} -set autosetup(cc-include-deps) {} + # Initial cctest settings + cc-store-settings {-cflags {} -includes {} -declare {} -link 0 -lang c -libs {} -code {} -nooutput 0} + set autosetup(cc-include-deps) {} -msg-result "C compiler...[get-define CCACHE] [get-define CC] [get-define CFLAGS] [get-define CPPFLAGS]" -if {[get-define CXX] ne "false"} { - msg-result "C++ compiler...[get-define CCACHE] [get-define CXX] [get-define CXXFLAGS] [get-define CPPFLAGS]" -} -msg-result "Build C compiler...[get-define CC_FOR_BUILD]" - -# On Darwin, we prefer to use -g0 to avoid creating .dSYM directories -# but some compilers may not support it, so test here. -switch -glob -- [get-define host] { - *-*-darwin* { - if {[cctest -cflags {-g0}]} { - define cc-default-debug -g0 + msg-result "C compiler...[get-define CCACHE] [get-define CC] [get-define CFLAGS] [get-define CPPFLAGS]" + if {[get-define CXX] ne "false"} { + msg-result "C++ compiler...[get-define CCACHE] [get-define CXX] [get-define CXXFLAGS] [get-define CPPFLAGS]" + } + msg-result "Build C compiler...[get-define CC_FOR_BUILD]" + + # On Darwin, we prefer to use -g0 to avoid creating .dSYM directories + # but some compilers may not support it, so test here. + switch -glob -- [get-define host] { + *-*-darwin* { + if {[cctest -cflags {-g0}]} { + define cc-default-debug -g0 + } } } -} -if {![cc-check-includes stdlib.h]} { - user-error "Compiler does not work. See config.log" + if {![cc-check-includes stdlib.h]} { + user-error "Compiler does not work. See config.log" + } } + +cc-init |