[R-pkg-devel] set PKG_CONFIG_PATH before installing a package

[Sameh M. Abdulah]

I am using this command to set an environment variable ` Sys.setenv(PKG_CONFIG_PATH=paste(Sys.getenv('PKG_CONFIG_PATH'),paste(.libPaths(),'my_package/lib/pkgconfig',sep='/',collapse=':'),sep=':'));’
before install my package. It works fine if I run it before installing my package.

How can I do this inside my package so that CRAN can execute it by default.

--Sameh

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