Added CMake command to export compiler directories to support emacs LSP mode. (#26118)

var/spack/repos/builtin/packages/aluminum/package.py

@@ -61,6 +61,7 @@ def cmake_args(self):
         spec = self.spec
         args = [
             '-DCMAKE_CXX_STANDARD:STRING=17',
+            '-DCMAKE_EXPORT_COMPILE_COMMANDS=ON',
             '-DALUMINUM_ENABLE_CUDA:BOOL=%s' % ('+cuda' in spec),
             '-DALUMINUM_ENABLE_NCCL:BOOL=%s' % ('+nccl' in spec or '+rccl' in spec),
             '-DALUMINUM_ENABLE_ROCM:BOOL=%s' % ('+rocm' in spec)]

var/spack/repos/builtin/packages/dihydrogen/package.py

@@ -145,6 +145,7 @@ def cmake_args(self):
 
         args = [
             '-DCMAKE_CXX_STANDARD=17',
+            '-DCMAKE_EXPORT_COMPILE_COMMANDS=ON',
             '-DCMAKE_INSTALL_MESSAGE:STRING=LAZY',
             '-DBUILD_SHARED_LIBS:BOOL=%s'      % ('+shared' in spec),
             '-DH2_ENABLE_ALUMINUM=%s' % ('+al' in spec),

var/spack/repos/builtin/packages/hydrogen/package.py

@@ -146,6 +146,7 @@ def cmake_args(self):
 
         args = [
             '-DCMAKE_CXX_STANDARD=14',
+            '-DCMAKE_EXPORT_COMPILE_COMMANDS=ON',
             '-DCMAKE_INSTALL_MESSAGE:STRING=LAZY',
             '-DBUILD_SHARED_LIBS:BOOL=%s'      % ('+shared' in spec),
             '-DHydrogen_ENABLE_OPENMP:BOOL=%s'       % ('+openmp' in spec),

var/spack/repos/builtin/packages/lbann/package.py

@@ -296,6 +296,7 @@ def cmake_args(self):
         args = self.common_config_args
         args.extend([
             '-DCMAKE_CXX_STANDARD=17',
+            '-DCMAKE_EXPORT_COMPILE_COMMANDS=ON',
             '-DLBANN_WITH_CNPY=%s' % ('+numpy' in spec),
             '-DLBANN_DETERMINISTIC:BOOL=%s' % ('+deterministic' in spec),
             '-DLBANN_WITH_HWLOC=%s' % ('+hwloc' in spec),