From 7a1a36c3db214e3ff706627826e818cf891c9060 Mon Sep 17 00:00:00 2001 From: =?utf8?q?S=C3=A9bastien=20Villemot?= Date: Sat, 21 May 2022 21:25:13 +0100 Subject: [PATCH] Create shared libraries lib{blas,lapack}.so.3 Forwarded: not-needed Last-Update: 2020-07-31 * It is done so that duplicate code with libopenblas.so.0 is kept as low as possible. Only the symbols from the external BLAS/LAPACK API are incorporated in the shared libraries. The rest is obtained by dynamic linking against libopenblas.so.0. This also gives access to some extra OpenBLAS symbols, in order to differentiate it at runtime from other BLAS implementations (see #960728). The -rpath,'$ORIGIN' is there to ensure that the OpenBLAS flavour used is the one selected in the lib{blas,lapack}.so.3 alternative, and not the one selected in the libopenblas.so.0 alternative. * See also override_dh_shlibdeps in debian/rules * Also order the files when calling `ar' or $(CC), to make the build reproducible (see #824639) * Also link the shared blas and lapack against gomp (see #945791) Last-Update: 2020-07-31 Gbp-Pq: Name shared-blas-lapack.patch --- interface/Makefile | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/interface/Makefile b/interface/Makefile index 0ee32b9..c422178 100644 --- a/interface/Makefile +++ b/interface/Makefile @@ -2351,3 +2351,28 @@ delete-duplicate-lapack-objects: && rm $(SLAPACKOBJS) $(DLAPACKOBJS) $(CLAPACKOBJS) $(ZLAPACKOBJS) lsame.o xerbla.o; fi if test -d ../lapack64-netlib; then cd ../lapack64-netlib \ && rm $(SLAPACKOBJS) $(DLAPACKOBJS) $(CLAPACKOBJS) $(ZLAPACKOBJS) lsame.o xerbla.o; fi + +shared-blas-lapack: libblas.so.3 liblapack.so.3 +shared-blas64-lapack64: libblas64.so.3 liblapack64.so.3 +ifneq (0,$(USE_OPENMP)) +SH_BLAS_LAPACK_OMP=-fopenmp -lgomp +endif + +# The list of prerequisite is created by comparing with NETLIB BLAS public API. +# The symbol cblas_xerbla is missing here, but it does not seem to be provided +# by libopenblas.so.0 either. +libblas.so.3: $(SBLAS1OBJS) $(SBLAS2OBJS) $(SBLAS3OBJS) $(DBLAS1OBJS) $(DBLAS2OBJS) $(DBLAS3OBJS) $(CBLAS1OBJS) $(CBLAS2OBJS) $(CBLAS3OBJS) $(ZBLAS1OBJS) $(ZBLAS2OBJS) $(ZBLAS3OBJS) ../kernel/lsame.o ../kernel/scabs1.o ../kernel/dcabs1.o ../driver/others/xerbla.o + $(CC) $(LDFLAGS) -shared -o $@ $^ -Wl,-soname,libblas.so.3 -L.. -lopenblas $(EXTRALIB) $(SH_BLAS_LAPACK_OMP) -Wl,-rpath,'$$ORIGIN' + +libblas64.so.3: $(SBLAS1OBJS) $(SBLAS2OBJS) $(SBLAS3OBJS) $(DBLAS1OBJS) $(DBLAS2OBJS) $(DBLAS3OBJS) $(CBLAS1OBJS) $(CBLAS2OBJS) $(CBLAS3OBJS) $(ZBLAS1OBJS) $(ZBLAS2OBJS) $(ZBLAS3OBJS) ../kernel/lsame.o ../kernel/scabs1.o ../kernel/dcabs1.o ../driver/others/xerbla.o + $(CC) $(LDFLAGS) -shared -o $@ $^ -Wl,-soname,libblas64.so.3 -L.. -lopenblas64 $(EXTRALIB) $(SH_BLAS_LAPACK_OMP) -Wl,-rpath,'$$ORIGIN' + +# The prerequisites must match the symbols deleted in target delete-duplicate-lapack-objects +liblapack.so.3: $(SLAPACKOBJS) $(DLAPACKOBJS) $(CLAPACKOBJS) $(ZLAPACKOBJS) ../kernel/lsame.o ../driver/others/xerbla.o + $(CC) $(LDFLAGS) -shared -o $@ $^ `LC_ALL=C ls ../lapack-netlib/*` -Wl,-soname,liblapack.so.3 -L.. -lopenblas $(EXTRALIB) $(SH_BLAS_LAPACK_OMP) -Wl,-rpath,'$$ORIGIN' + +liblapack64.so.3: $(SLAPACKOBJS) $(DLAPACKOBJS) $(CLAPACKOBJS) $(ZLAPACKOBJS) ../kernel/lsame.o ../driver/others/xerbla.o + $(CC) $(LDFLAGS) -shared -o $@ $^ `LC_ALL=C ls ../lapack64-netlib/*` -Wl,-soname,liblapack64.so.3 -L.. -lopenblas64 $(EXTRALIB) $(SH_BLAS_LAPACK_OMP) -Wl,-rpath,'$$ORIGIN' + +clean:: + rm -f libblas.so.3 liblapack.so.3 -- 2.30.2