add CI job that tests whether the amalgamated library builds

Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>

Author: sjaeckel

.github/workflows/main.yml

@@ -155,6 +155,14 @@ jobs:
           cat valgrind_test.log || true
           cat gcc_errors_*.log || true
 
+  amalgam:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: install dependencies
+        run: |
+          make amalgamated_timing
+
   CMake:
     runs-on: ${{ matrix.os }}
     strategy:

makefile

@@ -69,9 +69,11 @@ profiled:
 	make CFLAGS="$(CFLAGS) -fbranch-probabilities"
 
 #make a single object profiled library
-profiled_single: pre_gen
+amalgamated_timing: pre_gen
 	$(CC) $(LTM_CFLAGS) -fprofile-arcs -c pre_gen/tommath_amalgam.c -o tommath_amalgam.o
 	$(CC) $(LTM_CFLAGS) -DMP_VERSION=\"before\" demo/timing.c tommath_amalgam.o -lgcov -o timing
+
+profiled_single: amalgamated_timing
 	./timing
 	rm -f *.o timing
 	$(CC) $(LTM_CFLAGS) -fbranch-probabilities -c pre_gen/tommath_amalgam.c -o tommath_amalgam.o