| 69 | #1): use user-provided command |
| 70 | local tool-command = ; |
| 71 | if $(command) |
| 72 | { |
| 73 | tool-command = [ common.get-invocation-command-nodefault gcc : g++ : $(command) ] ; |
| 74 | if ! $(tool-command) |
| 75 | { |
| 76 | errors.error "toolset gcc initialization:" : |
| 77 | "provided command '$(command)' not found" : |
| 78 | "initialized from" [ errors.nearest-user-location ] ; |
| 79 | } |
| 80 | } |
| 81 | #2): enforce user-provided version |
| 82 | else if $(version) |
| 83 | { |
| 84 | tool-command = [ common.get-invocation-command-nodefault gcc : "g++-$(version[1])" ] ; |
| 85 | |
| 86 | #2.1) fallback: check whether "g++" reports the requested version |
| 87 | if ! $(tool-command) |
| 88 | { |
| 89 | tool-command = [ common.get-invocation-command-nodefault gcc : g++ ] ; |
| 90 | if $(tool-command) |
| 91 | { |
| 92 | local tool-command-string = $(tool-command:J=" ") ; |
| 93 | local tool-version = [ MATCH "^([0-9.]+)" : [ SHELL "$(tool-command-string) -dumpversion" ] ] ; |
| 94 | if $(tool-version) != $(version) |
| 95 | { |
| 96 | errors.error "toolset gcc initialization:" : |
| 97 | "version '$(version)' requested but 'g++-$(version)' not found and version '$(tool-version)' of default '$(tool-command)' does not match" : |
| 98 | "initialized from" [ errors.nearest-user-location ] ; |
| 99 | tool-command = ; |
| 100 | } |
| 101 | } |
| 102 | else |
| 103 | { |
| 104 | errors.error "toolset gcc initialization:" : |
| 105 | "version '$(version)' requested but neither 'g++-$(version)' nor default 'g++' found" : |
| 106 | "initialized from" [ errors.nearest-user-location ] ; |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | #3) default: no command and no version specified, try using default command "g++" |
| 111 | else |
| 112 | { |
| 113 | tool-command = [ common.get-invocation-command-nodefault gcc : g++ ] ; |
| 114 | if ! $(tool-command) |
| 115 | { |
| 116 | errors.error "toolset gcc initialization:" : |
| 117 | "no command provided, default command 'g++' not found" : |
| 118 | "initialized from" [ errors.nearest-user-location ] ; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | |