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-rw-r--r--doc/pdf/Makefile24
1 files changed, 12 insertions, 12 deletions
diff --git a/doc/pdf/Makefile b/doc/pdf/Makefile
index 91de32b7..7afbdcf2 100644
--- a/doc/pdf/Makefile
+++ b/doc/pdf/Makefile
@@ -8,24 +8,24 @@ PDFS += intel-64-sdm-vol-3.pdf
 PDFS += intel-64-sdm-vol-4.pdf
 PDFS += multiboot.pdf
 
-ELF = http://refspecs.linuxbase.org/elf
+ELF = https://refspecs.linuxbase.org/elf
 INTEL = https://software.intel.com/sites/default/files/managed
 
-URL_abi.pdf = ${ELF}/x64_64-abi-0.99.pdf
-URL_c11.pdf = http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf
-URL_elf.pdf = ${ELF}/elf.pdf
-URL_intel-64-opt.pdf = ${INTEL}/9e/bc/64-ia-32-architectures-optimization-manual.pdf
-URL_intel-64-sdm-vol-1.pdf = ${INTEL}/a4/60/253665-sdm-vol-1.pdf
-URL_intel-64-sdm-vol-2.pdf = ${INTEL}/a4/60/325383-sdm-vol-2abcd.pdf
-URL_intel-64-sdm-vol-3.pdf = ${INTEL}/a4/60/325384-sdm-vol-3abcd.pdf
-URL_intel-64-sdm-vol-4.pdf = ${INTEL}/22/0d/335592-sdm-vol-4.pdf
-URL_multiboot.pdf = https://www.gnu.org/software/grub/manual/multiboot/multiboot.pdf
+URL.abi.pdf = ${ELF}/x86_64-abi-0.99.pdf
+URL.c11.pdf = http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf
+URL.elf.pdf = ${ELF}/elf.pdf
+URL.intel-64-opt.pdf = ${INTEL}/9e/bc/64-ia-32-architectures-optimization-manual.pdf
+URL.intel-64-sdm-vol-1.pdf = ${INTEL}/a4/60/253665-sdm-vol-1.pdf
+URL.intel-64-sdm-vol-2.pdf = ${INTEL}/a4/60/325383-sdm-vol-2abcd.pdf
+URL.intel-64-sdm-vol-3.pdf = ${INTEL}/a4/60/325384-sdm-vol-3abcd.pdf
+URL.intel-64-sdm-vol-4.pdf = ${INTEL}/22/0d/335592-sdm-vol-4.pdf
+URL.multiboot.pdf = https://www.gnu.org/software/grub/manual/multiboot/multiboot.pdf
 
 all: ${PDFS}
 
 ${PDFS}:
-	curl -o $@ ${URL_$@}
-	chmod 444 $@
+	curl -Lf -o $@ ${URL.$@}
+	chmod a-w $@
 
 clean:
 	rm -f ${PDFS}