On 9/17/21 3:09 AM, Arjen Markus wrote:
On Tuesday, September 14, 2021 at 10:26:54 PM UTC+2, paul wrote:
Hey, i am new to fortran on MAC.
I just installed Xcode, fortran via GitHub, and when I want to build my program ( gfortran Helloworld.f95), it says :
clang: error: invalid version number in '-mmacosx-version-min=11.5'
I saw on the blog kind of a solution and typed :
sudo xcode-select --switch /Library/Developer/CommandLineTools
Now it says another error when I want to build :
ld: library not found for -lSystem
collect2: erreur: ld a retourné le statut de sortie 1
(in french sorry)
I don't know how to solve this error, any advices ? I can't train on my computer that's so annoying
Thank you in advance !
I have seen messages about this before, perhaps a search in this newsgroup will help. As I do not use MacOSX, I cannot help with more concrete advice.
I am running an older version of MacOS and Xcode. In the older version,
the command line tools are installed with the command
sudo xcode-select --install
Also, the switch command that I have always used is
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer
The command given in the original post would be appropriate if you have multiple versions of Xcode installed, and you wanted to switch to a
nondefault version.
Also, before you actually use Xcode, you need to run the command
sudo xcodebuild -license
or you need to click the license agreement within the Xcode app itself. Otherwise, I think you do get those types of ld errors because of file permission errors.
However, perhaps some or all of this has changed in the most recent
version of MacOS.
$.02 -Ron Shepard
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