[gtk-doc] tests: calculate time differences with date instead of bc

[Stefan Sauer <stefkost src gnome org>]

commit 283a263d5505c4c881fb1b3781b3ad291f09cd75
Author: Stefan Sauer <ensonic users sf net>
Date:   Fri Aug 16 10:31:17 2019 +0200

    tests: calculate time differences with date instead of bc
    
    Fixes #99

 .gitlab-ci/debian.Dockerfile |  1 -
 tests/gtk-doc.make           | 16 ++++++++--------
 2 files changed, 8 insertions(+), 9 deletions(-)
---
diff --git a/.gitlab-ci/debian.Dockerfile b/.gitlab-ci/debian.Dockerfile
index 5015385..7a75b3f 100644
--- a/.gitlab-ci/debian.Dockerfile
+++ b/.gitlab-ci/debian.Dockerfile
@@ -3,7 +3,6 @@ FROM debian:unstable
 RUN apt-get update -qq && apt-get install --no-install-recommends -qq -y \
     autoconf \
     automake \
-    bc \
     build-essential \
     dblatex \
     docbook \
diff --git a/tests/gtk-doc.make b/tests/gtk-doc.make
index 5b54a72..9235874 100644
--- a/tests/gtk-doc.make
+++ b/tests/gtk-doc.make
@@ -64,11 +64,11 @@ GITIGNOREFILES = \
   html.ref xml.ref
 
 check-local: html-build.stamp pdf-build.stamp
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: All done"
 
 docs: html-build.stamp pdf-build.stamp
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: All done"
 
 $(REPORT_FILES): sgml-build.stamp
@@ -96,7 +96,7 @@ setup-build.stamp: ts
 #### scan ####
 
 scan-build.stamp: ts setup-build.stamp $(HFILE_GLOB) $(CFILE_GLOB)
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: Scanning header files"
        @_source_dir='' ; \
        for i in $(DOC_SOURCE_DIR) ; do \
@@ -106,7 +106,7 @@ scan-build.stamp: ts setup-build.stamp $(HFILE_GLOB) $(CFILE_GLOB)
        PATH=$(abs_top_builddir):$(PATH) PYTHONPATH=$(abs_top_builddir):$(abs_top_srcdir):$(PYTHONPATH) \
        gtkdoc-scan --module=$(DOC_MODULE) --ignore-headers="$(IGNORE_HFILES)" $${_source_dir} 
$(SCAN_OPTIONS) $(EXTRA_HFILES) 2>&1 | tee -a gtkdoc-scan.log
        @if grep -l '^..*$$' $(DOC_MODULE).types > /dev/null 2>&1 ; then \
-               ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+               ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
          echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: Introspecting gobjects"; \
          scanobj_options=""; \
          if test "x$(V)" = "x1"; then \
@@ -129,7 +129,7 @@ $(DOC_MODULE)-decl.txt $(SCANOBJ_FILES) $(DOC_MODULE)-sections.txt $(DOC_MODULE)
 #### xml ####
 
 sgml-build.stamp: setup-build.stamp $(DOC_MODULE)-decl.txt $(SCANOBJ_FILES) $(HFILE_GLOB) $(CFILE_GLOB) 
$(DOC_MODULE)-sections.txt $(DOC_MODULE)-overrides.txt $(expand_content_files) xml/gtkdocentities.ent
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: Building XML"
        @_source_dir='' ; \
        for i in $(DOC_SOURCE_DIR) ; do \
@@ -160,7 +160,7 @@ xml/gtkdocentities.ent: Makefile
 #### html ####
 
 html-build.stamp: sgml.stamp $(DOC_MAIN_SGML_FILE) $(content_files)
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: Building HTML"
        @rm -rf html
        @mkdir html
@@ -176,7 +176,7 @@ html-build.stamp: sgml.stamp $(DOC_MAIN_SGML_FILE) $(content_files)
          test -f $(abs_srcdir)/$$file && cp $(abs_srcdir)/$$file $(abs_builddir)/html; \
          test -f $(abs_builddir)/$$file && cp $(abs_builddir)/$$file $(abs_builddir)/html; \
        done;
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: Fixing cross-references"
        @echo "gtkdoc-fixxref --module=$(DOC_MODULE) --module-dir=html --html-dir=$(HTML_DIR) 
$(FIXXREF_OPTIONS)" >gtkdoc-fixxref.log; \
        PATH=$(abs_top_builddir):$(PATH) PYTHONPATH=$(abs_top_builddir):$(abs_top_srcdir):$(PYTHONPATH) \
@@ -186,7 +186,7 @@ html-build.stamp: sgml.stamp $(DOC_MAIN_SGML_FILE) $(content_files)
 #### pdf ####
 
 pdf-build.stamp: sgml.stamp $(DOC_MAIN_SGML_FILE) $(content_files)
-       @ts1=`cat ts`;ts2=`date $(TS_FMT)`;tsd=`echo $$ts2-$$ts1 | bc`; \
+       @ts=`cat ts`;tsd=`date -d "now - $$ts seconds" $(TS_FMT)`; \
        echo "  DOC   `$(DATE_FMT_CMD)$$tsd`: Building PDF"
        @rm -f $(DOC_MODULE).pdf
        @mkpdf_options=""; \