diff options
Diffstat (limited to 'GNUmakefile')
| -rw-r--r-- | GNUmakefile | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/GNUmakefile b/GNUmakefile index e5b0265a..2c172da6 100644 --- a/GNUmakefile +++ b/GNUmakefile @@ -24,6 +24,18 @@ # The default target is either "merge" or "nonmerge", as determined by # the DEFAULT_TARGET variable set by config.mk. +# Debugging techniques: +# +# To build so you can easily debug with a debugger such as Gdb: +# +# make CFLAGS="-g -O0" +# +# To debug libnetpbm, link it statically into the using program: +# +# make NETPBMLIBTYPE=unixstatic pamcut +# +# (Then 'ldd ./pamcut' to make sure it worked) +# # About the "merge" target: Normally the Makefiles build separate # executables for each program. However, on some systems (especially # those without shared libraries) this can mean a lot of space. In @@ -52,6 +64,11 @@ # running in. The -f option is necessary in order to have separate # source and object directories. +# For the check targets, results go in a results directory, which you'll need +# if a test fails to find out how it failed. The default is +# RESULTDIR_DEFAULT in config.mk. Override it with +# 'make resultdir=/tmp/myresultdir . + ifeq ($(CURDIR)x,x) all package install: @echo "YOU NEED AT LEAST VERSION 3.77 OF GNU MAKE TO BUILD NETPBM." @@ -266,7 +283,14 @@ init_package: echo "Netpbm install package made by 'make package'" \ >$(PKGDIR)/pkginfo date >>$(PKGDIR)/pkginfo - echo Netpbm $(MAJOR).$(MINOR).$(POINT) >$(PKGDIR)/VERSION +# For many years, the version string was "Netpbm x.y.z" instead of just +# "x.y.z". This was probably related to the fact that when you ask a Netpbm +# program its version, it says "Netpbm x.y.z" to let you know it's the version +# of the whole package, not just that program. And also to distinguish from +# the Pbmplus version of the program. But this is highly unconventional in +# pkg-config or config files, so we removed the "Netpbm" in Netpbm 10.90 +# (March 2020). + echo $(MAJOR).$(MINOR).$(POINT) >$(PKGDIR)/VERSION $(INSTALL) -c -m 664 $(SRCDIR)/buildtools/README.pkg $(PKGDIR)/README $(INSTALL) -c -m 664 $(SRCDIR)/buildtools/config_template \ $(PKGDIR)/config_template @@ -310,8 +334,8 @@ ifneq ($(LINUXSVGALIB),NONE) MERGELIBS += $(LINUXSVGALIB) endif -ifneq ($(shell pkg-config --modversion libpng$(PNGVER)),) - PNGLD = $(shell pkg-config --libs libpng$(PNGVER)) +ifneq ($(shell $(PKG_CONFIG) --modversion libpng$(PNGVER)),) + PNGLD = $(shell $(PKG_CONFIG) --libs libpng$(PNGVER)) else ifneq ($(shell libpng$(PNGVER)-config --version),) PNGLD = $(shell libpng$(PNGVER)-config --ldflags) @@ -320,8 +344,8 @@ else endif endif -ifneq ($(shell pkg-config --modversion libxml-2.0),) - XML2LD=$(shell pkg-config --libs libxml-2.0) +ifneq ($(shell $(PKG_CONFIG) --modversion libxml-2.0),) + XML2LD=$(shell $(PKG_CONFIG) --libs libxml-2.0) else ifneq ($(shell xml2-config --version),) XML2LD=$(shell xml2-config --libs) @@ -330,8 +354,8 @@ else endif endif -ifneq ($(shell pkg-config x11 --libs),) - X11LD = $(shell pkg-config x11 --libs) +ifneq ($(shell $(PKG_CONFIG) x11 --libs),) + X11LD = $(shell $(PKG_CONFIG) x11 --libs) else X11LD = $(shell $(LIBOPT) $(LIBOPTR) $(X11LIB)) endif @@ -349,7 +373,7 @@ endif # 1) Each directory produces an object file merge.o containing all the code # in that directory and its descendants that needs to go into the 'netpbm' # program. The make files do this recursively, via a link command that -# combines multiple relocateable object files into one. All we do here +# combines multiple relocatable object files into one. All we do here # at the top level is make merge.o and link it with netpbm.o and the # libraries. # @@ -449,6 +473,7 @@ CHECK_VARS = \ JASPERLIB="$(JASPERLIB)" \ JBIGLIB="$(JBIGLIB)" \ JPEGLIB="$(JPEGLIB)" \ + LINUXSVGALIB="$(LINUXSVGALIB)" \ PNGLIB="$(PNGLIB)" \ TIFFLIB="$(TIFFLIB)" \ URTLIB="$(URTLIB)" \ |