Explicitly specify compilers on macOS. (#9849)

- There is a difference between the default include directories used by `gcc/g++/clang/clang++` vs the system default compiler targets `(cc/c++`). Always specify the compilers explicitly so OpenModelica knows the actual functional compilers to use for simulation code.
OpenModelica · Dec 4, 2022 · 14b2673 · 14b2673
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commit 14b2673
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diff --git a/.CI/cmake/Jenkinsfile.cmake.macos.gcc b/.CI/cmake/Jenkinsfile.cmake.macos.gcc
@@ -38,6 +38,10 @@ pipeline {
                                           // Look in /opt/local first to prefer the macports libraries
                                           // over others in the system.
                                           + " -DCMAKE_PREFIX_PATH=/opt/local"
+                                          // Always specify the compilers explicilty for macOS
+                                          + " -DCMAKE_C_COMPILER=gcc"
+                                          + " -DCMAKE_CXX_COMPILER=g++"
+                                          + " -DCMAKE_Fortran_COMPILER=gfortran"
                                       )
                 sh "build/bin/omc --version"
                 // Create a product build package

diff --git a/Jenkinsfile b/Jenkinsfile
@@ -165,6 +165,10 @@ pipeline {
                                           // Look in /opt/local first to prefer the macports libraries
                                           // over others in the system.
                                           + " -DCMAKE_PREFIX_PATH=/opt/local"
+                                          // Always specify the compilers explicilty for macOS
+                                          + " -DCMAKE_C_COMPILER=gcc"
+                                          + " -DCMAKE_CXX_COMPILER=g++"
+                                          + " -DCMAKE_Fortran_COMPILER=gfortran"
                                       )
                 sh "build/bin/omc --version"
               }