add version and 'git describe' computed at compile-time; update to v3.4.6

CHANGELOG.md

 SHTNS CHANGE LOG:
 -----------------
 
+* v3.4.6  (15 May 2021)
+	- Fix major bug arising in complex-valued synthesis since v3.4 (issue #42).
+	- Fix accuracy error for regular grids including poles and lmax>=1000.
+	- Fix hang occuring sometimes with python `set_grid()` method.
+	- Fix normalization issue with CUDA for analysis when using `SHT_REAL_NORM`.
+	- other minor fixes and improvements.
+
 * v3.4.5  (13 Nov 2020)
 	- Fix compilation of python module with older versions of gcc.
 

Makefile.in

@@ -3,11 +3,13 @@ PREFIX=@prefix@
 SED=@SED@
 LIBS=@LIBS@
 PYTHON=@PYTHON@
+shtns_ver := $(shell grep -m 1 -e "^* v" CHANGELOG.md | sed -e "s/^* v\([^ ]*\).*/-DSHTNS_VER=\\\\\"\1\\\\\"/")
+git_id := $(shell git describe --tags --always --dirty=*)
 
 # compiler command with options for the sht codelets
 shtcc=@CC2@ @CFLAGS2@ -D_GNU_SOURCE
 # compiler command with options for other source (initialization, ...)
-cc=@CC@ @CFLAGS@ -D_GNU_SOURCE @LDFLAGS@
+cc=@CC@ @CFLAGS@ -D_GNU_SOURCE -DSHTNS_GIT=\"$(git_id)\" $(shtns_ver) @LDFLAGS@
 fc=@FC@ @FFLAGS@ @LDFLAGS@
 
 hfiles = sht_private.h sht_config.h shtns.h shtns_simd.h

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.62])
-AC_INIT([SHTns],[3.4.5],[],[shtns],[https://bitbucket.org/nschaeff/shtns])
+AC_INIT([SHTns],[3.4.6],[],[shtns],[https://bitbucket.org/nschaeff/shtns])
 AC_LANG([C])
 AC_CONFIG_SRCDIR([sht_init.c])
 AC_CONFIG_HEADERS([sht_config.h])

sht_init.c

@@ -59,10 +59,14 @@ void shtns_verbose(int v) {
 #define _SHTNS_ID_ _SIMD_NAME_
 #endif
 
+#ifndef SHTNS_VER
+#define SHTNS_VER PACKAGE_VERSION
+#endif
+
 /// \internal Abort program with error message.
 static void shtns_runerr(const char * error_text)
 {
-	printf("*** [" PACKAGE_NAME "] Run-time error : %s\n",error_text);
+	printf("*** [SHTns] Run-time error : %s\n",error_text);
 	exit(1);
 }
 
@@ -898,10 +902,13 @@ done:
 
 void shtns_print_version() {
   #ifndef SHTNS4MAGIC
-	printf("[" PACKAGE_STRING "] built " __DATE__ ", " __TIME__ ", id: " _SHTNS_ID_ "\n");
+	printf("[SHTns " SHTNS_VER "] built ");
   #else
-	printf("[" PACKAGE_STRING "] built for MagIC " __DATE__ ", " __TIME__  ", id: " _SHTNS_ID_ "\n");
+	printf("[SHTns " SHTNS_VER "] built for MagIC ");
   #endif
+	printf(__DATE__ ", " __TIME__  ", id: ");
+	if (strlen(SHTNS_GIT) > 0) printf(SHTNS_GIT ",");
+	printf(_SHTNS_ID_ "\n");
 }
 
 
@@ -965,7 +972,7 @@ int config_save(shtns_cfg shtns, int req_flags)
 
 	FILE *fcfg = fopen("shtns_cfg","a");
 	if (fcfg != NULL) {
-		fprintf(fcfg, "%s %s %d %d %d %d %d %d %d %d %d %d",PACKAGE_VERSION, _SHTNS_ID_, shtns->lmax, shtns->mmax, shtns->mres, shtns->nphi, shtns->nlat, shtns->grid, shtns->nthreads, req_flags, shtns->nlorder, -1);
+		fprintf(fcfg, "%s %s %d %d %d %d %d %d %d %d %d %d",SHTNS_VER, _SHTNS_ID_, shtns->lmax, shtns->mmax, shtns->mres, shtns->nphi, shtns->nlat, shtns->grid, shtns->nthreads, req_flags, shtns->nlorder, -1);
 		fprint_ftable(fcfg, shtns->ftable);
 		fprintf(fcfg,"\n");
 		fclose(fcfg);
@@ -1473,7 +1480,7 @@ int shtns_set_grid_auto(shtns_cfg shtns, enum shtns_type flags, double eps, int
 	if ((omp_threads > 1)&&(verbose>1)) printf(" nthreads = %d\n",shtns->nthreads);
   #endif
   #if SHT_VERBOSE > 0
-	if (verbose) printf("        => " PACKAGE_NAME " is ready.\n");
+	if (verbose) printf("        => SHTns is ready.\n");
   #endif
 	return(shtns->nspat);	// returns the number of doubles to be allocated for a spatial field.
 }