Missing alr build step either in instructions or in Makefile

[mgrojo]

Using Alire 2.0.1 and following the steps in the development guide I got these errors:

mgr@mgr-B50-80:~/src/github/AdaCore/RecordFlux$ make install_devel
gprbuild -p -j0 -Pgenerated/librflxlang.gpr \
	-XLIBRARY_TYPE=static-pic \
	-XLIBRFLXLANG_LIBRARY_TYPE=relocatable \
	-XLIBRFLXLANG_STANDALONE=encapsulated
librflxlang.gpr:6:06: imported project file "gnatcoll" not found
gnatcoll_gmp.gpr:24:06: imported project file "gnatcoll" not found
gnatcoll_gmp.gpr:24:06: imported by "/home/mgr/src/github/AdaCore/RecordFlux/generated/gnatcoll-bindings/gmp/gnatcoll_gmp.gpr"
gnatcoll_gmp.gpr:24:06: imported by "/home/mgr/src/github/AdaCore/RecordFlux/generated/librflxlang.gpr"
gnatcoll_gmp.gpr:45:43: unknown package or project "Gnatcoll"
gnatcoll_iconv.gpr:24:06: imported project file "gnatcoll" not found
gnatcoll_iconv.gpr:24:06: imported by "/home/mgr/src/github/AdaCore/RecordFlux/generated/gnatcoll-bindings/iconv/gnatcoll_iconv.gpr"
gnatcoll_iconv.gpr:24:06: imported by "/home/mgr/src/github/AdaCore/RecordFlux/generated/librflxlang.gpr"
gnatcoll_iconv.gpr:45:43: unknown package or project "Gnatcoll"
langkit_support.gpr:1:06: imported project file "gnatcoll" not found
langkit_support.gpr:1:06: imported by "/home/mgr/src/github/AdaCore/RecordFlux/generated/langkit/langkit/support/langkit_support.gpr"
langkit_support.gpr:1:06: imported by "/home/mgr/src/github/AdaCore/RecordFlux/generated/librflxlang.gpr"
gprbuild: "generated/librflxlang.gpr" processing failed
make: *** [Makefile:212: generated/lib/relocatable/dev/librflxlang.so] Error 4

The problem was, that the project files did not exist in the directories present in GPR_PROJECT_PATH generated by Alire in the eval $(make printenv_gnat) step.

To continue building, I had to run:

cd build/alire
alr build
cd -
make install_devel
``

[treiher]

Thank you for the report! This problem is caused by a behavior change in Alire 2.0. It worked fine with previous Alire versions. We will update the Makefile accordingly.