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Corrected comments related to the allowed linker & linker-type values. Minor stylistic changes.

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[SVN r43280]
This commit is contained in:
Jurko Gospodnetić
2008-02-16 16:50:42 +00:00
parent b8758c8539
commit 886c2d7f90
1 changed files with 187 additions and 210 deletions
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397
v2/tools/gcc.jam
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@@ -56,7 +56,7 @@ generators.override gcc.searched-lib-generator : searched-lib-generator ;
# libxxx.a static library
# xxx.dll DLL
# libxxx.dll.a import library
#
#
# Note: user can always override by using the <tag>@rule
# This settings have been choosen, so that mingw
# is in line with msvc naming conventions. For
@@ -72,13 +72,12 @@ type.set-generated-target-prefix IMPORT_LIB : <toolset>gcc <target-os>cygwin : l
import rc ;
# Initializes the gcc toolset for the given version.
# If necessary, command may be used to specify where the compiler
# is located.
# The parameter 'options' is a space-delimited list of options, each
# one being specified as <option-name>option-value. Valid option names
# are: cxxflags, linkflags and linker-type. Accepted values for linker-type
# are gnu and sun, gnu being the default.
# Initializes the gcc toolset for the given version. If necessary, command may
# be used to specify where the compiler is located. The parameter 'options' is a
# space-delimited list of options, each one specified as
# <option-name>option-value. Valid option names are: cxxflags, linkflags and
# linker-type. Accepted linker-type values are gnu, darwin, osf, hpux or sun
# and the default value will be selected based on the current OS.
# Example:
# using gcc : 3.4 : : <cxxflags>foo <linkflags>bar <linker-type>sun ;
rule init ( version ? : command * : options * )
@@ -128,12 +127,12 @@ rule init ( version ? : command * : options * )
: version $(version)
] ;
}
common.handle-options gcc : $(condition) : $(command) : $(options) ;
local linker = [ feature.get-values <linker-type> : $(options) ] ;
if ! $(linker) {
if ! $(linker)
{
if [ os.name ] = OSF
{
linker = osf ;
@@ -143,36 +142,35 @@ rule init ( version ? : command * : options * )
linker = hpux ;
}
else
{
{
linker = gnu ;
}
}
}
init-link-flags gcc $(linker) $(condition) ;
# If gcc is installed in non-standard location, we'd need to
# add LD_LIBRARY_PATH when running programs created with it
# (for unit-test/run rules).
# If gcc is installed in non-standard location, we'd need to add
# LD_LIBRARY_PATH when running programs created with it (for unit-test/run
# rules).
if $(command)
{
# On multilib 64-bit boxes, there are both 32-bit and 64-bit
# libraries and all must be added to LD_LIBRARY_PATH. The linker
# will pick the right onces.
# Note that we don't provide a clean way to build 32-bit binary
# with 64-bit compiler, but user can always pass -m32 manually.
# On multilib 64-bit boxes, there are both 32-bit and 64-bit libraries
# and all must be added to LD_LIBRARY_PATH. The linker will pick the
# right onces. Note that we don't provide a clean way to build 32-bit
# binary with 64-bit compiler, but user can always pass -m32 manually.
local lib_path = $(root)/bin $(root)/lib $(root)/lib32 $(root)/lib64 ;
if $(.debug-configuration)
{
ECHO notice: using gcc libraries :: $(condition) :: $(lib_path) ;
}
flags gcc.link RUN_PATH $(condition) : $(lib_path) ;
}
}
#~ If it's not a system gcc install we should adjust the various
#~ programs as needed to prefer using the install specific versions.
#~ This is essential for correct use of MinGW and for cross-compiling.
#~ - The archive builder.
# If it's not a system gcc install we should adjust the various programs as
# needed to prefer using the install specific versions. This is essential
# for correct use of MinGW and for cross-compiling.
# - The archive builder.
local archiver =
[ common.get-invocation-command gcc
: ar : [ feature.get-values <archiver> : $(options) ] : $(bin) : search-path ] ;
@@ -181,8 +179,8 @@ rule init ( version ? : command * : options * )
{
ECHO notice: using gcc archiver :: $(condition) :: $(archiver[1]) ;
}
#~ - The resource compiler.
# - The resource compiler.
local rc =
[ common.get-invocation-command-nodefault gcc
: windres : [ feature.get-values <rc> : $(options) ] : $(bin) : search-path ] ;
@@ -191,13 +189,11 @@ rule init ( version ? : command * : options * )
rc-type ?= windres ;
if ! $(rc)
{
#~ If we can't find an RC compiler we fallback to a null RC compiler
#~ that creates empty object files. This allows the same Jamfiles
#~ to work across the board. The null RC uses the assembler to create
#~ the empty objects, so configure that.
rc =
[ common.get-invocation-command gcc
: as : : $(bin) : search-path ] ;
# If we can't find an RC compiler we fallback to a null RC compiler that
# creates empty object files. This allows the same Jamfiles to work
# across the board. The null RC uses the assembler to create the empty
# objects, so configure that.
rc = [ common.get-invocation-command gcc : as : : $(bin) : search-path ] ;
rc-type = null ;
}
rc.configure $(rc) : $(condition) : <rc-type>$(rc-type) ;
@@ -205,23 +201,22 @@ rule init ( version ? : command * : options * )
if [ os.name ] = NT
{
# This causes single-line command invocation to not go through
# .bat files, thus avoiding command-line length limitations
JAMSHELL = % ;
# This causes single-line command invocation to not go through .bat files,
# thus avoiding command-line length limitations.
JAMSHELL = % ;
}
generators.register-c-compiler gcc.compile.c++ : CPP : OBJ : <toolset>gcc ;
generators.register-c-compiler gcc.compile.c : C : OBJ : <toolset>gcc ;
generators.register-c-compiler gcc.compile.c : C : OBJ : <toolset>gcc ;
generators.register-c-compiler gcc.compile.asm : ASM : OBJ : <toolset>gcc ;
# pch support
# The compiler looks for a precompiled header in each directory just
# before it looks for the include file in that directory.
# The name searched for is the name specified in the #include directive
# with ".gch" suffix appended.
# The logic in gcc-pch-generator will make sure that BASE_PCH suffix is
# appended to full name of the header.
# The compiler looks for a precompiled header in each directory just before it
# looks for the include file in that directory. The name searched for is the
# name specified in the #include directive with ".gch" suffix appended. The
# logic in gcc-pch-generator will make sure that BASE_PCH suffix is appended to
# full name of the header.
type.set-generated-target-suffix PCH : <toolset>gcc : gch ;
@@ -238,15 +233,14 @@ class gcc-pch-generator : pch-generator
local header ;
for local s in $(sources)
{
if [ type.is-derived [ $(s).type ] H ]
if [ type.is-derived [ $(s).type ] H ]
{
header = $(s) ;
}
}
}
# error handling
# base name of header file should be the same as the base name
# of precompiled header.
# Error handling: Base header file name should be the same as the base
# precompiled header name.
local header-name = [ $(header).name ] ;
local header-basename = $(header-name:B) ;
if $(header-basename) != $(name)
@@ -255,13 +249,8 @@ class gcc-pch-generator : pch-generator
errors.user-error "in" $(location)": pch target name `"$(name)"' should be the same as the base name of header file `"$(header-name)"'" ;
}
local pch-file =
[
generator.run $(project) $(name)
: $(property-set)
: $(header)
]
;
local pch-file = [ generator.run $(project) $(name) : $(property-set)
: $(header) ] ;
# return result of base class and pch-file property as usage-requirements
return
@@ -269,21 +258,21 @@ class gcc-pch-generator : pch-generator
$(pch-file)
;
}
# Calls the base version specifying source's name as the
# name of the created target. As result, the PCH will be named
# whatever.hpp.gch, and not whatever.gch.
# Calls the base version specifying source's name as the name of the created
# target. As result, the PCH will be named whatever.hpp.gch, and not
# whatever.gch.
rule generated-targets ( sources + : property-set : project name ? )
{
name = [ $(sources[1]).name ] ;
return [ generator.generated-targets $(sources)
return [ generator.generated-targets $(sources)
: $(property-set) : $(project) $(name) ] ;
}
}
}
# Note: the 'H' source type will catch both '.h' header and '.hpp' header. The latter
# have HPP type, but HPP type is derived from H. The type of compilation is determined
# entirely by the destination type.
# Note: the 'H' source type will catch both '.h' header and '.hpp' header. The
# latter have HPP type, but HPP type is derived from H. The type of compilation
# is determined entirely by the destination type.
generators.register [ new gcc-pch-generator gcc.compile.c.pch : H : C_PCH : <pch>on <toolset>gcc ] ;
generators.register [ new gcc-pch-generator gcc.compile.c++.pch : H : CPP_PCH : <pch>on <toolset>gcc ] ;
@@ -294,60 +283,58 @@ generators.override gcc.compile.c++.pch : pch.default-cpp-pch-generator ;
flags gcc.compile PCH_FILE <pch>on : <pch-file> ;
# Declare flags and action for compilation
flags gcc.compile OPTIONS <optimization>off : -O0 ;
flags gcc.compile OPTIONS <optimization>off : -O0 ;
flags gcc.compile OPTIONS <optimization>speed : -O3 ;
flags gcc.compile OPTIONS <optimization>space : -Os ;
flags gcc.compile OPTIONS <inlining>off : -fno-inline ;
flags gcc.compile OPTIONS <inlining>on : -Wno-inline ;
flags gcc.compile OPTIONS <inlining>off : -fno-inline ;
flags gcc.compile OPTIONS <inlining>on : -Wno-inline ;
flags gcc.compile OPTIONS <inlining>full : -finline-functions -Wno-inline ;
flags gcc.compile OPTIONS <warnings>off : -w ;
flags gcc.compile OPTIONS <warnings>on : -Wall ;
flags gcc.compile OPTIONS <warnings>on : -Wall ;
flags gcc.compile OPTIONS <warnings>all : -Wall -pedantic ;
flags gcc.compile OPTIONS <warnings-as-errors>on : -Werror ;
flags gcc.compile OPTIONS <debug-symbols>on : -g ;
flags gcc.compile OPTIONS <profiling>on : -pg ;
# On cygwin and mingw, gcc generates position independent code by default,
# and warns if -fPIC is specified. This might not be the right way
# of checking if we're using cygwin. For example, it's possible
# to run cygwin gcc from NT shell, or using crosscompiling.
# But we'll solve that problem when it's time. In that case
# we'll just add another parameter to 'init' and move this login
# On cygwin and mingw, gcc generates position independent code by default, and
# warns if -fPIC is specified. This might not be the right way of checking if
# we're using cygwin. For example, it's possible to run cygwin gcc from NT
# shell, or using crosscompiling. But we'll solve that problem when it's time.
# In that case we'll just add another parameter to 'init' and move this login
# inside 'init'.
if [ os.name ] != CYGWIN && [ os.name ] != NT
{
{
# This logic will add -fPIC for all compilations:
#
# lib a : a.cpp b ;
# obj b : b.cpp ;
# exe c : c.cpp a d ;
# obj d : d.cpp ;
#
# This all is fine, except that 'd' will be compiled with
# -fPIC even though it's not needed, as 'd' is used only in
# exe. However, it's hard to detect where a target is going to
# be used. Alternative, we can set -fPIC only when main target type
# is LIB but than 'b' will be compiled without -fPIC. In x86-64 that
# will lead to link errors. So, compile everything with -fPIC.
#
# Yet another alternative would be to create propagated <sharedable>
# feature, and set it when building shared libraries, but that's hard
# to implement and will increase target path length even more.
# This all is fine, except that 'd' will be compiled with -fPIC even though
# it's not needed, as 'd' is used only in exe. However, it's hard to detect
# where a target is going to be used. Alternative, we can set -fPIC only
# when main target type is LIB but than 'b' will be compiled without -fPIC.
# In x86-64 that will lead to link errors. So, compile everything with
# -fPIC.
#
# Yet another alternative would be to create propagated <sharedable>
# feature, and set it when building shared libraries, but that's hard to
# implement and will increase target path length even more.
flags gcc.compile OPTIONS <link>shared : -fPIC ;
}
}
if [ os.name ] != NT && [ os.name ] != OSF && [ os.name ] != HPUX
{
# OSF does have an option called -soname but it doesn't seem to work as
# expected, therefore it has been disabled.
HAVE_SONAME = "" ;
SONAME_OPTION = -h ;
}
flags gcc.compile USER_OPTIONS <cflags> ;
flags gcc.compile.c++ USER_OPTIONS <cxxflags> ;
flags gcc.compile DEFINES <define> ;
@@ -355,35 +342,34 @@ flags gcc.compile INCLUDES <include> ;
actions compile.c++.pch
{
"$(CONFIG_COMMAND)" -x c++-header $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
"$(CONFIG_COMMAND)" -x c++-header $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
}
actions compile.c.pch
{
"$(CONFIG_COMMAND)" -x c-header $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
"$(CONFIG_COMMAND)" -x c-header $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
}
rule compile.c++
{
# Some extensions are compiled as C++ by default. For others, we need
# to pass -x c++.
# We could always pass -x c++ but distcc does not work with it.
# Some extensions are compiled as C++ by default. For others, we need to
# pass -x c++. We could always pass -x c++ but distcc does not work with it.
if ! $(>:S) in .cc .cp .cxx .cpp .c++ .C
{
LANG on $(<) = "-x c++" ;
}
}
DEPENDS $(<) : [ on $(<) return $(PCH_FILE) ] ;
}
rule compile.c
{
# If we use the name g++ then default file suffix -> language mapping
# does not work. So have to pass -x option. Maybe, we can work around this
# by allowing the user to specify both C and C++ compiler names.
# If we use the name g++ then default file suffix -> language mapping does
# not work. So have to pass -x option. Maybe, we can work around this by
# allowing the user to specify both C and C++ compiler names.
#if $(>:S) != .c
#{
LANG on $(<) = "-x c" ;
#}
#}
DEPENDS $(<) : [ on $(<) return $(PCH_FILE) ] ;
}
@@ -394,7 +380,7 @@ actions compile.c++ bind PCH_FILE
actions compile.c bind PCH_FILE
{
"$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(PCH_FILE:D)" -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
"$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(PCH_FILE:D)" -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
}
rule compile.asm
@@ -404,17 +390,17 @@ rule compile.asm
actions compile.asm
{
"$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
"$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
}
# The class which check that we don't try to use
# the <runtime-link>static property while creating or using shared library,
# since it's not supported by gcc/libc.
# The class which check that we don't try to use the <runtime-link>static
# property while creating or using shared library, since it's not supported by
# gcc/libc.
class gcc-linking-generator : unix-linking-generator
{
rule run ( project name ? : property-set : sources + )
{
#~ TODO: Replace this with the use of a target-os property.
# TODO: Replace this with the use of a target-os property.
local no-static-link = ;
if [ modules.peek : UNIX ]
{
@@ -452,15 +438,14 @@ class gcc-linking-generator : unix-linking-generator
ECHO warning:
$(reason) ;
ECHO warning:
"It's suggested to use '<runtime-link>static' together"
"with the '<link>static'." ;
"It is suggested to use '<runtime-link>static' together"
"with '<link>static'." ;
return ;
}
else
{
local generated-targets = [ unix-linking-generator.run $(project) $(name)
: $(property-set) : $(sources) ] ;
local generated-targets = [ unix-linking-generator.run $(project)
$(name) : $(property-set) : $(sources) ] ;
return $(generated-targets) ;
}
}
@@ -495,8 +480,8 @@ else
: <toolset>gcc ] ;
}
# Declare flags for linking
# First, the common flags
# Declare flags for linking.
# First, the common flags.
flags gcc.link OPTIONS <debug-symbols>on : -g ;
flags gcc.link OPTIONS <profiling>on : -pg ;
flags gcc.link USER_OPTIONS <linkflags> ;
@@ -505,39 +490,37 @@ flags gcc.link FINDLIBS-ST <find-static-library> ;
flags gcc.link FINDLIBS-SA <find-shared-library> ;
flags gcc.link LIBRARIES <library-file> ;
# For <runtime-link>static we made sure there are no dynamic libraries
# in the link.
# On HP-UX not all system libraries exist as archived libraries (for example,
# there is no libunwind.a), so, on this platform, the -static option cannot
# be specified.
# For <runtime-link>static we made sure there are no dynamic libraries in the
# link. On HP-UX not all system libraries exist as archived libraries (for
# example, there is no libunwind.a), so, on this platform, the -static option
# cannot be specified.
if [ os.name ] != HPUX
{
flags gcc.link OPTIONS <runtime-link>static : -static ;
}
# Now, the vendor specific flags
# The parameter linker can be either gnu or sun
# Now, the vendor specific flags.
# The parameter linker can be either gnu, darwin, osf, hpux or sun.
rule init-link-flags ( toolset linker condition )
{
switch $(linker)
{
case gnu :
{
# Strip the binary when no debugging is needed.
# We use --strip-all flag as opposed to -s since icc
# (intel's compiler) is generally option-compatible with
# and inherits from gcc toolset, but does not support -s
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,--strip-all
: unchecked ;
flags $(toolset).link RPATH $(condition) : <dll-path> : unchecked ;
flags $(toolset).link RPATH_LINK $(condition) : <xdll-path> : unchecked ;
flags $(toolset).link START-GROUP $(condition) : -Wl,--start-group : unchecked ;
flags $(toolset).link END-GROUP $(condition) : -Wl,--end-group : unchecked ;
# gnu ld has the ability to change the search behaviour for libraries referenced
# by -l switch. These modifiers are -Bstatic and -Bdynamic and change search
# for -l switches that follow them. The following list shows the tried variants.
# Strip the binary when no debugging is needed. We use --strip-all flag
# as opposed to -s since icc (intel's compiler) is generally
# option-compatible with and inherits from the gcc toolset, but does not
# support -s.
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,--strip-all : unchecked ;
flags $(toolset).link RPATH $(condition) : <dll-path> : unchecked ;
flags $(toolset).link RPATH_LINK $(condition) : <xdll-path> : unchecked ;
flags $(toolset).link START-GROUP $(condition) : -Wl,--start-group : unchecked ;
flags $(toolset).link END-GROUP $(condition) : -Wl,--end-group : unchecked ;
# gnu ld has the ability to change the search behaviour for libraries
# referenced by -l switch. These modifiers are -Bstatic and -Bdynamic
# and change search for -l switches that follow them. The following list
# shows the tried variants.
# The search stops at the first variant that has a match.
# *nix: -Bstatic -lxxx
# libxxx.a
@@ -561,72 +544,71 @@ rule init-link-flags ( toolset linker condition )
# libxxx.a
#
# (*) This is for cygwin
# Please note that -Bstatic and -Bdynamic are not a guarantee that a static
# or dynamic lib indeed gets linked in. The switches only change search
# patterns!
# Please note that -Bstatic and -Bdynamic are not a guarantee that a
# static or dynamic lib indeed gets linked in. The switches only change
# search patterns!
# On *nix mixing shared libs with static runtime is not a good idea.
flags $(toolset).link FINDLIBS-ST-PFX $(condition)/<runtime-link>shared
flags $(toolset).link FINDLIBS-ST-PFX $(condition)/<runtime-link>shared
: -Wl,-Bstatic : unchecked ;
flags $(toolset).link FINDLIBS-SA-PFX $(condition)/<runtime-link>shared
flags $(toolset).link FINDLIBS-SA-PFX $(condition)/<runtime-link>shared
: -Wl,-Bdynamic : unchecked ;
# On windows allow mixing of static and dynamic libs with static runtime
# On windows allow mixing of static and dynamic libs with static
# runtime.
flags $(toolset).link FINDLIBS-ST-PFX $(condition)/<runtime-link>static/<target-os>windows
: -Wl,-Bstatic : unchecked ;
flags $(toolset).link FINDLIBS-SA-PFX $(condition)/<runtime-link>static/<target-os>windows
flags $(toolset).link FINDLIBS-SA-PFX $(condition)/<runtime-link>static/<target-os>windows
: -Wl,-Bdynamic : unchecked ;
flags $(toolset).link OPTIONS $(condition)/<runtime-link>static/<target-os>windows
flags $(toolset).link OPTIONS $(condition)/<runtime-link>static/<target-os>windows
: -Wl,-Bstatic : unchecked ;
}
case darwin :
{
# On Darwin, the -s option to ld does not work unless we pass
# -static, and passing -static unconditionally is a bad idea.
# So, don't pass -s at all, darwin.jam will use separate 'strip'
# invocation.
# On Darwin, the -s option to ld does not work unless we pass -static,
# and passing -static unconditionally is a bad idea. So, don't pass -s.
# at all, darwin.jam will use separate 'strip' invocation.
flags $(toolset).link RPATH $(condition) : <dll-path> : unchecked ;
flags $(toolset).link RPATH_LINK $(condition) : <xdll-path> : unchecked ;
}
case osf :
{
# No --strip-all, just -s
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,-s
# No --strip-all, just -s.
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,-s
: unchecked ;
flags $(toolset).link RPATH $(condition) : <dll-path> : unchecked ;
# This does not supports -R
# This does not supports -R.
flags $(toolset).link RPATH_OPTION $(condition) : -rpath : unchecked ;
# -rpath-link is not supported at all.
}
case sun :
{
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,-s
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,-s
: unchecked ;
flags $(toolset).link RPATH $(condition) : <dll-path> : unchecked ;
# Solaris linker does not have a separate -rpath-link, but
# allows to use -L for the same purpose.
# Solaris linker does not have a separate -rpath-link, but allows to use
# -L for the same purpose.
flags $(toolset).link LINKPATH $(condition) : <xdll-path> : unchecked ;
# This permits shared libraries with non-PIC code on Solaris
# VP, 2004/09/07: Now that we have -fPIC hardcode in link.dll,
# the following is not needed. Whether -fPIC should be hardcoded,
# is a separate question.
# AH, 2004/10/16: it is still necessary because some tests link
# against static libraries that were compiled without PIC.
flags $(toolset).link OPTIONS $(condition)/<link>shared : -mimpure-text
: unchecked ;
# This permits shared libraries with non-PIC code on Solaris.
# VP, 2004/09/07: Now that we have -fPIC hardcode in link.dll, the
# following is not needed. Whether -fPIC should be hardcoded, is a
# separate question.
# AH, 2004/10/16: it is still necessary because some tests link against
# static libraries that were compiled without PIC.
flags $(toolset).link OPTIONS $(condition)/<link>shared : -mimpure-text
: unchecked ;
}
case hpux :
{
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off : -Wl,-s
: unchecked ;
flags $(toolset).link OPTIONS $(condition)/<link>shared : -fPIC
: unchecked ;
flags $(toolset).link OPTIONS $(condition)/<debug-symbols>off
: -Wl,-s : unchecked ;
flags $(toolset).link OPTIONS $(condition)/<link>shared
: -fPIC : unchecked ;
}
case * :
@@ -634,19 +616,18 @@ rule init-link-flags ( toolset linker condition )
errors.user-error
"$(toolset) initialization: invalid linker '$(linker)'" :
"The value '$(linker)' specified for <linker> is not recognized." :
"Possible values are 'sun', 'gnu'" ;
"Possible values are 'gnu', 'darwin', 'osf', 'hpux' or 'sun'" ;
}
}
}
# Declare actions for linking
# Declare actions for linking.
rule link ( targets * : sources * : properties * )
{
SPACE on $(targets) = " " ;
# Serialize execution of the 'link' action, since
# running N links in parallel is just slower.
# For now, serialize only gcc links, it might be a good
# idea to serialize all links.
SPACE on $(targets) = " " ;
# Serialize execution of the 'link' action, since running N links in
# parallel is just slower. For now, serialize only gcc links, it might be a
# good idea to serialize all links.
JAM_SEMAPHORE on $(targets) = <s>gcc-link-semaphore ;
}
@@ -656,12 +637,11 @@ actions link bind LIBRARIES
}
# Default value. Mostly for the sake of intel-linux
# that inherits from gcc, but does not has the same
# logic to set the .AR variable. We can put the same
# logic in intel-linux, but that's hardly worth the trouble
# as on Linux, 'ar' is always available.
.AR = ar ;
# Default value. Mostly for the sake of intel-linux that inherits from gcc, but
# does not have the same logic to set the .AR variable. We can put the same
# logic in intel-linux, but that's hardly worth the trouble as on Linux, 'ar' is
# always available.
.AR = ar ;
flags gcc.archive AROPTIONS <archiveflags> ;
@@ -671,20 +651,18 @@ rule archive ( targets * : sources * : properties * )
#
# Andre Hentz:
#
# I had a file, say a1.c, that was included into liba.a.
# I moved a1.c to a2.c, updated my Jamfiles and rebuilt.
# My program was crashing with absurd errors.
# After some debugging I traced it back to the fact that a1.o was *still*
# in liba.a
# I had a file, say a1.c, that was included into liba.a. I moved a1.c to
# a2.c, updated my Jamfiles and rebuilt. My program was crashing with absurd
# errors. After some debugging I traced it back to the fact that a1.o was
# *still* in liba.a
#
# Rene Rivera:
#
# Originally removing the archive was done by splicing an RM
# onto the archive action. That makes archives fail to build on NT
# when they have many files because it will no longer execute the
# action directly and blow the line length limit. Instead we
# remove the file in a different action, just before the building
# of the archive.
# Originally removing the archive was done by splicing an RM onto the
# archive action. That makes archives fail to build on NT when they have
# many files because it will no longer execute the action directly and blow
# the line length limit. Instead we remove the file in a different action,
# just before building the archive.
#
local clean.a = $(targets[1])(clean) ;
TEMPORARY $(clean.a) ;
@@ -695,14 +673,13 @@ rule archive ( targets * : sources * : properties * )
common.RmTemps $(clean.a) : $(targets) ;
}
# Declare action for creating static libraries
# The 'r' letter means to add files to the archive with replacement
# Since we remove archive, we don't care about replacement, but
# there's no option "add without replacement".
# The 'c' letter means suppresses warning in case the archive
# does not exists yet. That warning is produced only on
# some platforms, for whatever reasons.
actions piecemeal archive
# Declare action for creating static libraries.
# The letter 'r' means to add files to the archive with replacement. Since we
# remove archive, we don't care about replacement, but there's no option "add
# without replacement".
# The letter 'c' suppresses the warning in case the archive does not exists yet.
# That warning is produced only on some platforms, for whatever reasons.
actions piecemeal archive
{
"$(.AR)" $(AROPTIONS) rc "$(<)" "$(>)"
}
@@ -710,7 +687,7 @@ actions piecemeal archive
rule link.dll ( targets * : sources * : properties * )
{
SPACE on $(targets) = " " ;
SPACE on $(targets) = " " ;
JAM_SEMAPHORE on $(targets) = <s>gcc-link-semaphore ;
}
@@ -723,11 +700,11 @@ actions link.dll bind LIBRARIES
# Set up threading support. It's somewhat contrived, so perform it at the end,
# to avoid cluttering other code.
if [ os.on-windows ]
if [ os.on-windows ]
{
flags gcc OPTIONS <threading>multi : -mthreads ;
}
else if [ modules.peek : UNIX ]
else if [ modules.peek : UNIX ]
{
switch [ modules.peek : JAMUNAME ]
{