Use pre-compiled headers to speed up tests

.gitignore

@@ -1,6 +1,7 @@
 /build/
 *.aux
 *.log
+*.gch
 a.out
 header.tmp
 .vscode

doc/scripts/compile-all.sh

@@ -1,13 +1,17 @@
 #!/usr/bin/env bash
 DIR=${1:-.}
+
+# use a precompiled header for the template to improve perf
+g++ -Wall -Wextra -Wfatal-errors -Wconversion -std=c++14 -x c++-header $DIR/content/contest/template.cpp
+trap "rm -f $DIR/content/contest/template.cpp.gch" EXIT
+
 SCRIPT_DIR=$DIR/doc/scripts
 tests="$(find $DIR/content -name '*.h' | grep -vFf $SCRIPT_DIR/skip_headers)"
 echo "skipped: "
 find $DIR/content -name '*.h' | grep -Ff $SCRIPT_DIR/skip_headers
 declare -i pass=0
 declare -i fail=0
 failHeaders=""
-ulimit -s 524288 # For 2-sat test
 for test in $tests; do
     echo "$(basename $test): "
     $SCRIPT_DIR/test-compiles.sh $test
@@ -19,11 +23,9 @@ for test in $tests; do
     else
         pass+=1
     fi
-    rm -f a.out
     echo
 done
 echo "$pass/$(($pass+$fail)) tests passed"
-
 if (($pass == 0)); then
     echo "No tests found (make sure skip_headers doesn't have whitespace lines)"
     exit 1

doc/scripts/run-all.sh

@@ -1,5 +1,10 @@
 #!/usr/bin/env bash
 DIR=${1:-.}
+
+# use a precompiled header for the template to improve perf
+g++ -Wall -Wfatal-errors -Wconversion -std=c++17 -O2 $DIR/stress-tests/utilities/template.h
+trap "rm -f $DIR/stress-tests/utilities/template.h.gch" EXIT
+
 tests="$(find $DIR/stress-tests -name '*.cpp')"
 declare -i pass=0
 declare -i fail=0
@@ -8,7 +13,7 @@ ulimit -s 524288 # For 2-sat test
 for test in $tests; do
     echo "$(basename $test): "
     start=`date +%s.%N`
-    g++ -std=c++17 -O2 $test && ./a.out
+    g++ -Wall -Wfatal-errors -Wconversion -std=c++17 -O2 $test && ./a.out
     retCode=$?
     if (($retCode != 0)); then
         echo "Failed with $retCode"

doc/scripts/test-compiles.sh

@@ -4,4 +4,4 @@ echo "
 #include \"../content/contest/template.cpp\"
 #include \"../$FILE\"
 " >build/temp.cpp
-g++ -Wall -Wextra -Wfatal-errors -Wconversion -std=c++14 build/temp.cpp && rm a.out build/temp.cpp
+g++ -Wall -Wextra -Wfatal-errors -Wconversion -std=c++14 build/temp.cpp && rm a.out build/temp.cpp