Adding autogenerated Ceres config.h to #define Ceres compile options. - Previously we passed all compile options to Ceres via add_definitions in CMake. This was fine for private definitions (used only by Ceres) but required additional work for public definitions to ensure they were correctly propagated to clients via CMake using target_compile_definitions() (>= 2.8.11) or add_definitions(). - A drawback to these approaches is that they did not work for chained dependencies on Ceres, as in if in the users project B <- A <- Ceres, then although the required Ceres public compile definitions would be used when compiling A, they would not be propagated to B. - This patch replaces the addition of compile definitions via add_definitions() with an autogenerated config.h header which is installed with Ceres and defines all of the enabled Ceres compile options. - This removes the need for the user to propagate any compile definitions in their projects, and additionally allows post-install inspect of the options with which Ceres was compiled. Change-Id: Idbdb6abdad0eb31e7540370e301afe87a07f2260

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_2_2.cc b/internal/ceres/generated/partitioned_matrix_view_2_2_2.cc
index d7bd14c..a7d802a 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_2_2.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_2_2.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_2_3.cc b/internal/ceres/generated/partitioned_matrix_view_2_2_3.cc
index 6fca7b3..89e6f77 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_2_3.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_2_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_2_4.cc b/internal/ceres/generated/partitioned_matrix_view_2_2_4.cc
index 73c9100..3a3e8b6 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_2_4.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_2_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_2_d.cc b/internal/ceres/generated/partitioned_matrix_view_2_2_d.cc
index 8315e6a..661f135 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_2_d.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_2_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_3_3.cc b/internal/ceres/generated/partitioned_matrix_view_2_3_3.cc
index dc62c20..e79e001 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_3_3.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_3_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_3_4.cc b/internal/ceres/generated/partitioned_matrix_view_2_3_4.cc
index de63651..2f1ae68 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_3_4.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_3_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_3_9.cc b/internal/ceres/generated/partitioned_matrix_view_2_3_9.cc
index f85bd62..ab40550 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_3_9.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_3_9.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_3_d.cc b/internal/ceres/generated/partitioned_matrix_view_2_3_d.cc
index 2fe07be..89ecff7 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_3_d.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_3_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_4_3.cc b/internal/ceres/generated/partitioned_matrix_view_2_4_3.cc
index ed87dcf..182707d 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_4_3.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_4_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_4_4.cc b/internal/ceres/generated/partitioned_matrix_view_2_4_4.cc
index 5e9a339..a2cf8f4 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_4_4.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_4_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_4_8.cc b/internal/ceres/generated/partitioned_matrix_view_2_4_8.cc
index aef7048..a263769 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_4_8.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_4_8.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_4_9.cc b/internal/ceres/generated/partitioned_matrix_view_2_4_9.cc
index 8fea0bd..d853860 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_4_9.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_4_9.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_4_d.cc b/internal/ceres/generated/partitioned_matrix_view_2_4_d.cc
index d9e743b..7d622fc 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_4_d.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_4_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_2_d_d.cc b/internal/ceres/generated/partitioned_matrix_view_2_d_d.cc
index 1f26134..31981ca 100644
--- a/internal/ceres/generated/partitioned_matrix_view_2_d_d.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_2_d_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_4_4_2.cc b/internal/ceres/generated/partitioned_matrix_view_4_4_2.cc
index c3c0610..d51ab5f 100644
--- a/internal/ceres/generated/partitioned_matrix_view_4_4_2.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_4_4_2.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_4_4_3.cc b/internal/ceres/generated/partitioned_matrix_view_4_4_3.cc
index 34a0944..4b17fbd 100644
--- a/internal/ceres/generated/partitioned_matrix_view_4_4_3.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_4_4_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_4_4_4.cc b/internal/ceres/generated/partitioned_matrix_view_4_4_4.cc
index a790d0d..7b5fe0f 100644
--- a/internal/ceres/generated/partitioned_matrix_view_4_4_4.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_4_4_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/partitioned_matrix_view_4_4_d.cc b/internal/ceres/generated/partitioned_matrix_view_4_4_d.cc
index 467fb0e..c31fed3 100644
--- a/internal/ceres/generated/partitioned_matrix_view_4_4_d.cc
+++ b/internal/ceres/generated/partitioned_matrix_view_4_4_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_partitioned_matrix_view_specializations.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/partitioned_matrix_view_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_2_2.cc b/internal/ceres/generated/schur_eliminator_2_2_2.cc
index 696632b..db2a4dc 100644
--- a/internal/ceres/generated/schur_eliminator_2_2_2.cc
+++ b/internal/ceres/generated/schur_eliminator_2_2_2.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_2_3.cc b/internal/ceres/generated/schur_eliminator_2_2_3.cc
index 2b92a16..f53c12a 100644
--- a/internal/ceres/generated/schur_eliminator_2_2_3.cc
+++ b/internal/ceres/generated/schur_eliminator_2_2_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_2_4.cc b/internal/ceres/generated/schur_eliminator_2_2_4.cc
index 5ed1625..9e29383 100644
--- a/internal/ceres/generated/schur_eliminator_2_2_4.cc
+++ b/internal/ceres/generated/schur_eliminator_2_2_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_2_d.cc b/internal/ceres/generated/schur_eliminator_2_2_d.cc
index 4a73090..541def6 100644
--- a/internal/ceres/generated/schur_eliminator_2_2_d.cc
+++ b/internal/ceres/generated/schur_eliminator_2_2_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_3_3.cc b/internal/ceres/generated/schur_eliminator_2_3_3.cc
index a425560..e450263 100644
--- a/internal/ceres/generated/schur_eliminator_2_3_3.cc
+++ b/internal/ceres/generated/schur_eliminator_2_3_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_3_4.cc b/internal/ceres/generated/schur_eliminator_2_3_4.cc
index b71a48c..0618c68 100644
--- a/internal/ceres/generated/schur_eliminator_2_3_4.cc
+++ b/internal/ceres/generated/schur_eliminator_2_3_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_3_9.cc b/internal/ceres/generated/schur_eliminator_2_3_9.cc
index e0c265f..c1ca665 100644
--- a/internal/ceres/generated/schur_eliminator_2_3_9.cc
+++ b/internal/ceres/generated/schur_eliminator_2_3_9.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_3_d.cc b/internal/ceres/generated/schur_eliminator_2_3_d.cc
index 31d5d6b..1b6092c 100644
--- a/internal/ceres/generated/schur_eliminator_2_3_d.cc
+++ b/internal/ceres/generated/schur_eliminator_2_3_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_4_3.cc b/internal/ceres/generated/schur_eliminator_2_4_3.cc
index cc8270d..edce8ef 100644
--- a/internal/ceres/generated/schur_eliminator_2_4_3.cc
+++ b/internal/ceres/generated/schur_eliminator_2_4_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_4_4.cc b/internal/ceres/generated/schur_eliminator_2_4_4.cc
index d600a8b..a6f3c52 100644
--- a/internal/ceres/generated/schur_eliminator_2_4_4.cc
+++ b/internal/ceres/generated/schur_eliminator_2_4_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_4_8.cc b/internal/ceres/generated/schur_eliminator_2_4_8.cc
index 81e6bd6..bf2f0ab 100644
--- a/internal/ceres/generated/schur_eliminator_2_4_8.cc
+++ b/internal/ceres/generated/schur_eliminator_2_4_8.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_4_9.cc b/internal/ceres/generated/schur_eliminator_2_4_9.cc
index 6de47d5..a63d0bb 100644
--- a/internal/ceres/generated/schur_eliminator_2_4_9.cc
+++ b/internal/ceres/generated/schur_eliminator_2_4_9.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_4_d.cc b/internal/ceres/generated/schur_eliminator_2_4_d.cc
index 716e789..b3a7fff 100644
--- a/internal/ceres/generated/schur_eliminator_2_4_d.cc
+++ b/internal/ceres/generated/schur_eliminator_2_4_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_2_d_d.cc b/internal/ceres/generated/schur_eliminator_2_d_d.cc
index 4b420c3..f4d28cd 100644
--- a/internal/ceres/generated/schur_eliminator_2_d_d.cc
+++ b/internal/ceres/generated/schur_eliminator_2_d_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_4_4_2.cc b/internal/ceres/generated/schur_eliminator_4_4_2.cc
index f944f74..d1eadc1 100644
--- a/internal/ceres/generated/schur_eliminator_4_4_2.cc
+++ b/internal/ceres/generated/schur_eliminator_4_4_2.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_4_4_3.cc b/internal/ceres/generated/schur_eliminator_4_4_3.cc
index 9787b96..c340dbf 100644
--- a/internal/ceres/generated/schur_eliminator_4_4_3.cc
+++ b/internal/ceres/generated/schur_eliminator_4_4_3.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_4_4_4.cc b/internal/ceres/generated/schur_eliminator_4_4_4.cc
index 1a25bd0..b7d58ad 100644
--- a/internal/ceres/generated/schur_eliminator_4_4_4.cc
+++ b/internal/ceres/generated/schur_eliminator_4_4_4.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"

diff --git a/internal/ceres/generated/schur_eliminator_4_4_d.cc b/internal/ceres/generated/schur_eliminator_4_4_d.cc
index 7ddea9f..47e0059 100644
--- a/internal/ceres/generated/schur_eliminator_4_4_d.cc
+++ b/internal/ceres/generated/schur_eliminator_4_4_d.cc

@@ -40,6 +40,9 @@
 // This file is generated using generate_eliminator_specialization.py.
 // Editing it manually is not recommended.
 
+// This include must come before any #ifndef check on Ceres compile options.
+#include "ceres/internal/port.h"
+
 #ifndef CERES_RESTRICT_SCHUR_SPECIALIZATION
 
 #include "ceres/schur_eliminator_impl.h"