[perl-openssl-defaults] 02/05: Calculate the ABI version as a full debian/rules target file

[ntyni at debian.org]

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ntyni pushed a commit to branch master
in repository perl-openssl-defaults.

commit d7dde158411a5d6a7f76b1c78cb28ba4ae0c4478
Author: Niko Tyni <ntyni at debian.org>
Date:   Tue Dec 20 23:01:23 2016 +0200

    Calculate the ABI version as a full debian/rules target file
    
    This optimization saves objdump runs on targets like 'clean'
    and 'install', and removes the need for having libssl-dev
    installed in the 'clean' phase.
---
 debian/clean |  1 +
 debian/rules | 25 +++++++++++++------------
 2 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/debian/clean b/debian/clean
index 1f113a0..8771ef1 100644
--- a/debian/clean
+++ b/debian/clean
@@ -1,2 +1,3 @@
 debian/dh_perl_openssl.1
 debian/perl-openssl.make
+debian/openssl-abiversion
diff --git a/debian/rules b/debian/rules
index 4a189b6..096516d 100755
--- a/debian/rules
+++ b/debian/rules
@@ -11,11 +11,17 @@ SOFILE  = /usr/lib/$(DEB_HOST_MULTIARCH)/libssl.so
 # it is used for the Provides: perl-openssl-abi-XX relationship
 # see #848113
 
-OPENSSL_ABI_VERSION=$(shell $(OBJDUMP) -p $(SOFILE) | perl -ne '/SONAME\s+libssl\.so\.(.+)/ and print $$1')
+debian/openssl-abiversion: $(SOFILE)
+	$(OBJDUMP) -p $< | perl -ne '/SONAME\s+libssl\.so\.(.+)/ and print $$1' > $@
+	# fail if we could not extract the SONAME
+	[ -s $@ ]
 
-ifeq (,$(OPENSSL_ABI_VERSION))
-    $(error Cannot determine ABI version from $(SOFILE) SONAME)
-endif
+debian/perl-openssl.make: debian/openssl-abiversion
+	printf "%s\n%s\n%s\n" \
+	"# the ABI version for generating a perl-openssl-abi-* dependency." \
+	"# See #848113." \
+	"PERL_OPENSSL_ABI_VERSION=$(shell cat $<)" \
+	> $@
 
 # we build a binary called 'openssl-version' just to be able to generate
 # a libssl* dependency. dh_shlibdeps won't run if nothing in installed
@@ -24,15 +30,10 @@ override_dh_shlibdeps:
 	# scanning uninstalled binaries is intentional, please ignore the warning
 	dpkg-shlibdeps -e$(CURDIR)/openssl-version -Tdebian/perl-openssl-defaults.substvars
 
-override_dh_gencontrol:
-	dh_gencontrol -- -Vperl-openssl-abi-version=$(OPENSSL_ABI_VERSION)
+override_dh_gencontrol: debian/openssl-abiversion
+	dh_gencontrol -- -Vperl-openssl-abi-version=$(shell cat $<)
 
-override_dh_auto_build:
-	printf "%s\n%s\n%s\n" \
-	"# the ABI version for generating a perl-openssl-abi-* dependency." \
-	"# See #848113." \
-	"PERL_OPENSSL_ABI_VERSION=$(OPENSSL_ABI_VERSION)" \
-	> debian/perl-openssl.make
+override_dh_auto_build: debian/perl-openssl.make
 	pod2man debian/dh_perl_openssl debian/dh_perl_openssl.1
 	CC=$(CC) dh_auto_build
 

-- 
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