[PATCH v6 1/3] Makefile: generate Perl header from template file
From: Dan Jacques <hidden>
Date: 2018-03-19 02:51:05
Subsystem:
kernel build + files below scripts/ (unless maintained elsewhere), the rest · Maintainers:
Nathan Chancellor, Nicolas Schier, Linus Torvalds
Currently, the generated Perl script headers are emitted by commands in the Makefile. This mechanism restricts options to introduce alternative header content, needed by Perl runtime prefix support, and obscures the origin of the Perl script header. Change the Makefile to generate a header by processing a template file and move the header content into the "perl/" subdirectory. The processed generated will now be stored in the "GIT-PERL-HEADER" file. This allows the content of the Perl header to be controlled by changing the path of the template in the Makefile. Signed-off-by: Dan Jacques <redacted> Thanks-to: Ævar Arnfjörð Bjarmason [off-list ref] Thanks-to: Johannes Schindelin [off-list ref] --- .gitignore | 1 + Makefile | 27 +++++++++++++++----------- perl/header_templates/fixed_prefix.template.pl | 1 + 3 files changed, 18 insertions(+), 11 deletions(-) create mode 100644 perl/header_templates/fixed_prefix.template.pl
diff --git a/.gitignore b/.gitignore
index 833ef3b0b..89bd7bd8a 100644
--- a/.gitignore
+++ b/.gitignore@@ -3,6 +3,7 @@ /GIT-LDFLAGS /GIT-PREFIX /GIT-PERL-DEFINES +/GIT-PERL-HEADER /GIT-PYTHON-VARS /GIT-SCRIPT-DEFINES /GIT-USER-AGENT
diff --git a/Makefile b/Makefile
index a1d8775ad..e479822ce 100644
--- a/Makefile
+++ b/Makefile@@ -1975,20 +1975,15 @@ git.res: git.rc GIT-VERSION-FILE $(SCRIPT_PERL_GEN): GIT-BUILD-OPTIONS ifndef NO_PERL -$(SCRIPT_PERL_GEN): - +PERL_HEADER_TEMPLATE = perl/header_templates/fixed_prefix.template.pl PERL_DEFINES = $(PERL_PATH_SQ):$(PERLLIB_EXTRA_SQ):$(perllibdir_SQ) -$(SCRIPT_PERL_GEN): % : %.perl GIT-PERL-DEFINES GIT-VERSION-FILE + +$(SCRIPT_PERL_GEN): % : %.perl GIT-PERL-DEFINES GIT-PERL-HEADER GIT-VERSION-FILE $(QUIET_GEN)$(RM) $@ $@+ && \ - INSTLIBDIR='$(perllibdir_SQ)' && \ - INSTLIBDIR_EXTRA='$(PERLLIB_EXTRA_SQ)' && \ - INSTLIBDIR="$$INSTLIBDIR$${INSTLIBDIR_EXTRA:+:$$INSTLIBDIR_EXTRA}" && \ sed -e '1{' \ -e ' s|#!.*perl|#!$(PERL_PATH_SQ)|' \ - -e ' h' \ - -e ' s=.*=use lib (split(/$(pathsep)/, $$ENV{GITPERLLIB} || "'"$$INSTLIBDIR"'"));=' \ - -e ' H' \ - -e ' x' \ + -e ' rGIT-PERL-HEADER' \ + -e ' G' \ -e '}' \ -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \ $< >$@+ && \
@@ -2002,6 +1997,16 @@ GIT-PERL-DEFINES: FORCE echo "$$FLAGS" >$@; \ fi +GIT-PERL-HEADER: $(PERL_HEADER_TEMPLATE) GIT-PERL-DEFINES Makefile + $(QUIET_GEN)$(RM) $@ && \ + INSTLIBDIR='$(perllibdir_SQ)' && \ + INSTLIBDIR_EXTRA='$(PERLLIB_EXTRA_SQ)' && \ + INSTLIBDIR="$$INSTLIBDIR$${INSTLIBDIR_EXTRA:+:$$INSTLIBDIR_EXTRA}" && \ + sed -e 's=@@PATHSEP@@=$(pathsep)=g' \ + -e 's=@@INSTLIBDIR@@='$$INSTLIBDIR'=g' \ + -e 's=@@PERLLIBDIR@@='$(perllibdir_SQ)'=g' \ + $< >$@+ && \ + mv $@+ $@ .PHONY: gitweb gitweb:
@@ -2770,7 +2775,7 @@ ifndef NO_TCLTK endif $(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-BUILD-OPTIONS $(RM) GIT-USER-AGENT GIT-PREFIX - $(RM) GIT-SCRIPT-DEFINES GIT-PERL-DEFINES GIT-PYTHON-VARS + $(RM) GIT-SCRIPT-DEFINES GIT-PERL-DEFINES GIT-PERL-HEADER GIT-PYTHON-VARS .PHONY: all install profile-clean clean strip .PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell
diff --git a/perl/header_templates/fixed_prefix.template.pl b/perl/header_templates/fixed_prefix.template.pl
new file mode 100644
index 000000000..857b4391a
--- /dev/null
+++ b/perl/header_templates/fixed_prefix.template.pl@@ -0,0 +1 @@ +use lib (split(/@@PATHSEP@@/, $ENV{GITPERLLIB} || '@@INSTLIBDIR@@'));
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