========================================== GPR LIBRARY AND TOOLS 18 NEW FEATURES LIST ========================================== Copyright (C) 2021, AdaCore This file contains a complete list of new features in version 18 of the GPR library and tools. A full description of all features can be found in the GPRbuild and GPR Companion Tools User’s Guide. An ISO date (YYYY-MM-DD) appears in parentheses after the description line. This date shows the implementation date of the feature. Any 18.0w wavefront subsequent to this date will contain the indicated feature, as will any subsequent 18 or later release. NF-Q925-015 Switch --keep-temp-files for gprbuild (2017-09-29) Switch --keep-temp-files has been implemented for gprbuild. When used, temporary files created by gprbuild are not deleted. NF-Q829-035 List attributes configuration concatenable (2017-09-15) List attributes have a new characteristic: they are "configuration concatenable" or not. For those list attributes that are configuration concatenable, when the attribute is declared in bot the configuration project and the user project, the final value is the concatenation of both values, configuration then user. For the attributes that are not configuration concatenable, if the attribute is declared in the user project, then its value is as declared, regardless of a possible declaration in the configuration projects. The configuration concatenable attributes are all the list attributes with a name that end with Options or Switches. NF-Q725-024 Wildcards in attribute Ignore_Source_Sub_Dirs (2017-08-14) Wildcards are now allowed in the value of attribute Ignore_Source_Sub_Dirs, allowing to exclude groups of directories from the source directories of the project. NF-Q426-001 Avoid following too many symbolic links (2017-04-27) When gprbuild or gprclean were invoked without switch -eL, some symbolic links were still needlessly followed. Now, only the minimum number of symbolic links are followed. NF-Q414-011 Improved gprconfig performance (2017-07-03) Gprconfig performance substantially improved by caching results of all external calls. NF-Q407-019 Object files in alphabetical order in libraries (2017-07-18) To be able to reproduce the same executable and libraries on different machines, the object files are put in libraries in alphabetical order of their path names. NF-Q406-005 Directory of gprbuild added to the PATH (2017-07-27) When gprbuild is invoked, it now adds the directory of its executable to PATH, so that gprconfig can be found when using auto-configuration. NF-Q320-045 Allow binding switches for all SALs (2017-06-01) Binding switches (Binder'Default_Switches ("Ada")) are now allowed for all Stand-Alone Libraries, including sstatic SALs and aggregate SALs. NF-Q320-035 Do not ignore sources when compiler cannot be found (2017-05-26) When the compiler for a language could not be found, sources of the language were ignored. This is no longer the case, but if one of these sources needs to be compiled, an error will be reported and the GPR tool will fail. NF-Q317-025 Name of undefined external reference (2017-03-18) When the Project Manager is not able to find an external reference with no default, the error message now displays the name of the undefined external reference. NF-Q227-004 Extending a package from a project being extended (2017-03-07) In an extending project A, it is now possible to extend a package P from the project being extended B, when project B is extending another project C and package P is not declared in project B but has only been inherited from project C. NF-Q221-045 GPRbuild response files (2017-02-23) GPRbuild now supports response files. A response file is a text file, specified to gprbuild with argument '@'. The path is either absolute or relative to the current working directory. Each line in a response file is an argument for gprbuild. An argument '@' is not allowed in a response file. NF-Q126-041 New attribute Install_Project in package Install (2017-01-30) This new attribute controls whether to install a project file together with the sources and/or objects and libraries. NF-Q123-019 New gprbuild switch --no-complete-output / -n (2017-02-01) A new switch is added to gprbuild, --no-complete-output or equivalent -n. This switch is only accepted on the command line, not in package Builder. When this switch is used, no files .stderr or .stdout are created by the compilers. This switch also cancels any previous switch --complete-output. NF-Q120-027 Environment variables TEMP and TMP for temp dir (2017-02-28) In addition to environment variable TMPDIR, TEMP and TMP are potentially used by the Project Manager to store temporary files. If one of these environment variables designates the absolute path of a directory, this directory is used to store the temporaty files. TMPDIR is checked first, then TEMP, then TMP. If none of those designates the full path of a directory, then the temporary files are stored in object directories. NF-Q106-002 New switches --no-project for gprbuild and gprclean (2017-08-31) A new command line only switch --no-project is added to gprbuild and gprclean. When this switch is used, the project file used by the tool is the default one in /share/gpr/_default.gpr. NF-PC16-023 Add support for skipping new project generation (2017-02-02) The new GPRinstall's --no-project command line option and install package attribute Install_Project can be used to disable generation and installation of the project file. NF-PC08-065 New attribute Required_Artifacts (2016-12-14) A new attribute Required_Artifacts has been introduced. This new attribute complements the Artifacts attribute and is very similar except that the artifacts must exist or an error is reported. NF-PC08-064 New GPRname switch --ignore-duplicate-files (2017-01-05) GPRname has a new switch --ignore-duplicate-files which will ignore identical basenames when scanning for sources. In addition, a warning is now emitted by default when not using this switch to warn about potential conflicts when duplicate filenames are found. NF-PC08-062 New GPRname switch --ignore-predefined-units (2016-12-13) GPRname has a new switch --ignore-predefined-units which will not consider any predefined Ada unit (children of Ada, Interfaces and System packages) when scanning source files. NF-PB17-029 SAL projects and -bargs (2016-11-19) When gprbuild is invoked with a main project that is a Stand-Alone Library project and with binding options specified on the command line after switch -bargs, a warning is displayed indicating that command line binding options are not taken into account when the main project is a SAL project. NF-O817-030 Allow path of object file (O817-030) (2017-06-09) In .d dependency files for file-based languages, the beginning of the file line may be the full path of the object file, instead of its simple file name.