----- Original Message ----- | From: "Andy Falanga (afalanga)" <afala...@micron.com> | To: automake@gnu.org | Sent: Thursday, April 2, 2015 7:04:48 PM | Subject: The right way to use standard variable in configure.ac | | Hi, | | I placed the following in my configure.ac file: | | CPPFLAGS="-DMACRO1 -DMACRO2" | | because I found that as an example on a webpage someplace. I | reviewed so many learning about the autotools that I don't recall | which one now. I did this because there were some preprocessor | flags that I wanted to have common to all sub-makefiles. | | I ran into a problem today, however, where I needed to add a -I | directive to my CPPFLAGS in order to find the necessary headers. | Then, the problem stepped in. Because I placed this line in | configure.ac, it was transcribed, verbatim (as it should), into | configure. The net result: not matter what I placed on the command | line was ignored. For example, the following: | | CPPFLAGS=-I/path/to/the/alternate/location ./configure | --build=x86_64-linux --host=arm-poky-linux-gnueabi | | The additional path wasn't being appended, it was being stomped. Did | I miss a macro? How should this be done because, obviously, I've | gotten it incorrect.
changing that to ./configure --build=x86_64-linux --host=arm-poky-linux-gnueabi CPPFLAGS=-I/path/to/the/alternate/location is likely to get the expected result -- Thomas E. Dickey <dic...@invisible-island.net> http://invisible-island.net ftp://invisible-island.net
